Revisions and Known Issues

To detect your FlexCase revision number please refer to the table below. After reading the applicable ADC, the voltage will invorm the revision number.

Revision FlexBench FlexCase S FlexCase E FlexCase G FlexCase R
1.0     2.2 V 2.75 V 2.2 V
1.1 1.65 V 1.65 V 1.92 V   2.44 V
1.2 0.73 V 1.47 V      
1.3          
2.0     1.73 V    

FlexCase S & FlexBench

First release: 2019

Alternative names: FlexCase (Prior to Dec 2022)

Revision Changelog Known Issues
1.0

Released Aug 9, 2019
Status EOL

 First Release N/A None in circulation
1.1

Released Sep 11, 2019
Status EOL Jan 1, 2023
  • Modified main DCDC functionality. Ignition pin directly enables DCDC and MCU can hold DCDC on during undervoltage lockout conditions.
  • Improved linearity on ADC measurements
  • Current monitor function enabled
  • Board revision ADC added
  • Removal of shunt enabling high side PWM on most outputs for improved reliability on outputs.
  • Added headers to Nimbelink module to allow for after soldering installation
  • Various bug fixes
  • If the ignition pin and the supply pin are powered up at the same time the outputs can sometimes be unintentionally be turned on. This is due to two factors. The first is transient signal blips present on the control circuitry during boot and the second is delays during the charging of bulk capacitors. If your application is having issues with this use case we recommend controlling hardware using low side drive as much as possible. For high side drive, we recommend supplying the VCC pins on the FlexCase with an external relay after the board has booted successfully.
  • It is possible to provide a small amount of back-power to the main DCDC through the digital input pull ups. Generally this does not have any negative effects and does not need to be mitigated.
  • If a high 5V load is attached to the 5V external pin during boot up the board can fail to boot up due to the DCDC thinking that the load is a short circuit condition. The recommended remedy is to connect the load after the FlexCase has booted up through an output or external relay.
  • If the 5V external supply is connected to the high side supply pin reverse conduction can occur when the load voltage is greater than 5V. The recommended remedy is to limit the voltage on that specific output bank to 5V max.
  • The Nimbelink modules can become detached from the main PCB in high vibration environments. We recommend epoxying the modems to the board.
1.2

Released Dec 1, 2022
Status NRND

 Feature Change

  • Added third CANbus (“CAN2”) on unused cinch header pins
  • Added USB 2.0 data pins through the cinch header pins
  • Re-enabled high side PWM on outputs 1 through 10 due to fix in reliability.
  • Swapped MPU headers to support Raspberry Pi CM4 eMMC from Raspberry Pi CM3+ due to continued supply chain issues.
  • Replaced the accelerometer with and inertial measurement unit.
  • Moved the SPI connection on the MPU to SPI0 to benefit from improved compatibility with other softwares. Some software, such as MATLAB, only has formal support for SPI0.
  • Removed Bi-polar analog input measurement due to lack of use and complexity.

Reliability

  • Added 5 volt external enable pin to prevent back-powering and allow for proper booting of main DCDC before high load 5V circuity enabling.
  • Added enabling pin of output buffers to inhibit inadvertent output enabling during boot up when ignition and power are switched at the same time.
  • Added enabling pin on digital input pull ups to prevent power wastage and potential back-powering during sleep modes.
  • Added zip tie slots in the PCB for the Nimbelink for positive retention.
  • Added pull up/down passives on digital outputs to improve signal reliability.

Other

  • Set the CAN terminating resistors to be not present by default.
  • Replaced USB and Ethernet hub with a simple USB hub due to the new MPU supporting Ethernet PHY directly.
  • Change MCU ADC3 internal pin to PTA3 to enable better IMU functionality
  • Configured Ethernet to be through the MPU PHY interface.
  • Most passives are changed from 603 package to 402.

FLEXBENCH ONLY

Features

  • All updates from FlexCase S 1.2
  • Remove LinuxCAN
  • Remove LinuxIMU (now on MCU)
  • Status LEDs on face plate
  • New IO connector with breakout board for ease of use
  • In certain configurations, one DI could be mildly influenced by an another one, which could lead to errors in signal inputs.
  • (FlexBench Only) If an active RS232 dongle is plugged in the FlexBench won’t boot as the backpowering seems to inhibit a solid boot. This can by worked around by plugging in the RS232 interface after booting the board or powering the RS232 devices using the FlexBench after the board has booted.
1.3

Released Apr 1, 2024
Status RND

 Feature Change

  • Outputs have added overcurrent/temperature/voltage protection.
  • All outputs are active High.
  • In Standard SKU, all high-side and low-side outputs are enabled by default and can’t be disabled.
  • All CANbus standby pins have been merged.
  • Two additional digital inputs have been added.
  • The voltage rail scheme has been changed. There are fewer rails for different voltages.
  • The number of outputs has been reduced on the standard SKU as our new models meet the higher I/O needs.

Reliability/Performance

  • Additional diodes have been added to DI pull-ups to increase separation.
  • Internal signal resistors were tuned for better slew rate performance.
  • Voltage rail design is improved to prevent reverse current.
  • The buzzer is not connected in this revision.

MPU options and Adapters

Originally designed for the Raspberry Pi CM3+. Due to the ongoing silicon chip shortage, Audesse is supporting its customers with a Raspberry Pi CM4 adapter board that replaces the existing CM3+ board and expands the available IO.

The support page for the CM4 adapter is avilable here.

The CM4 adapter is end of life but still supported to those with it. The features present in the adapter have generally been integrated into newer revisions of the hardware.

If there is any confusion, please contact us for assistance.

Pinout

Color legend: C1 – 18 Pin header, C2 – 30 Pin header, Internal pin.

= Pro only

Download an offline version: FlexCase_Wiring.xlsx

Connector Pin # Function Application Comment
    Power
C2-H1 + Supply Voltage 8-36V (Unswitched)ⓘ Measure Supply Voltage ⓘ Measure Current
C2-H3 Ignition
Input		 On/Off Switch
ⓘ Keep On
C2-H2 Ground Grounds are common
C2-G1 Ground Grounds are common
C2-D1 +5 Volt
Supply		 For powering 5V components ⓘ2A Max
    Sensors
  Accelerometer ConfigurableMISO, MOSI, CLK, CS,Int1, Int2
  Board Version Analog Measurement
  Power Good Digital Measurement
  Ignition Digital Measurement
    Coms
  MCU-MPU SPI

MCU (Typically Slave): MISO, MOSI, CLK, CS

MPU (Typically Master): MISO, MOSI, CLK, CS1

  MPU Reset ⚠ Set high for >200ms then release
    CAN
C1-A1 MCU CAN0 High FD capable
C1-B1 MCU CAN0 Low FD capable
N/A MCU CAN0 Enable Set to enable CANbus
C1-C2 MCU CAN1 High  
C1-C3 MCU CAN1 Low  
N/A MCU CAN1 Enable Set to enable CANbus
    Ethernet
C1-A2 MPU RX Negative 568B Orange
C1-A3 MPU RX Positive 568B Orange White
C1-B2 MPU TX Negative 568B Green
C1-B3 MPU TX Positive 568B Green White
    Digital Outputs (DO)
    Bank 1
C2-A3 High Side Supply Supplies DO 1 – 5
C1-C1 MCU Digital Output 1 High Side (DO)
Low Side (DO/PWM)
C1-D3 MCU Digital Output 2 High Side (DO)
Low Side (DO/PWM)
C1-D2 MCU Digital Output 3 High Side (DO)
Low Side (DO/PWM)
C1-D1 MCU Digital Output 4 High Side (DO)
Low Side (DO/PWM)
C1-E3 MCU Digital Output 5

High Side (DO)
Low Side (DO/PWM)
    Bank 3
C2-E1 High Side Supply Supplies DO 6 – 10
C1-E2 MCU Digital Output 6 High Side (DO)
Low Side (DO/PWM)
C1-E1 MCU Digital Output 7 High Side (DO)
Low Side (DO/PWM)
C1-F3 MCU Digital Output 8 High Side (DO)
Low Side (DO/PWM)
C1-F2 MCU Digital Output 9 High Side (DO)
Low Side (DO/PWM)
C1-F1 MCU Digital Output 10 High Side (DO)
Low Side (DO/PWM)
    Bank 2
C2-A1 ⚠ High Side Supply  Supplies DO 11 – 16
C2-A2 MCU Digital Output 11 High Side (DO/PWM)
Low Side (DO/PWM)
C2-B3 MCU Digital Output 12 High Side (DO/PWM)
Low Side (DO/PWM)
C2-B2 MCU Digital Output 13 High Side (DO/PWM)
Low Side (DO/PWM)
C2-B1 MCU Digital Output 14 High Side (DO/PWM)
Low Side (DO/PWM)
C2-C3 MCU Digital Output 15 High Side (DO/PWM)
Low Side (DO/PWM)
C2-C1 MCU Digital Output 16 High Side (DO/PWM)
Low Side (DO/PWM)
    Digital Inputs (DI)
C2-C2 MCU Digital Input 1 DI/QUAD2 B/PWM
C2-D2 MCU Digital Input 2 DI/QUAD2 I/PWM
C2-D3 MCU Digital Input 3 DI/QUAD2 A/PWM
C2-F1 MCU Digital Input 4 DI/QUAD1 B/PWM
C2-F2 MCU Digital Input 5 DI/QUAD1 I/PWM
C2-F3 MCU Digital Input 6 DI/QUAD1 A/PWM
    Analog Input (AIn)
C2-J1 MCU Analog Input 6 0-36V (configurable)Bi-polar ⓘ
C2-J2 MCU Analog Input 5 0-36V (configurable)Bi-polar ⓘ
C2-J3 MCU Analog Input 4 0-36V (configurable)Bi-polar ⓘ
C2-K1 MCU Analog Input 3 0-36V (configurable)Bi-polar ⓘ
C2-K2 MCU Analog Input 2 0-36V (configurable)Bi-polar ⓘ
C2-K3 MCU Analog Input 1 0-36V (configurable)Bi-polar ⓘ
 

Color legend: Front Panel, C1 – 18 Screw Terminal, C2 – 18 Pin header, C3 – 18 Screw Terminal, C4 – 18 Pin header, Internal pin.

Connector Pin # Function Application Comment
Power
C3-14,
C3-16,
C3-18		 + Supply Voltage 8-36V (Unswitched)ⓘ Measure Supply Voltage ⓘ Measure Current

Also available through barrel jack.
C3-11 Ignition
Input		 On/Off Switch
ⓘ Keep OnAutomatically enabled through barrel jack.
C3-13,
C3-15,
C3-17		 Ground Grounds are common. Also available through the barrel jack
C4-15,
C4-17,
C4-18		 +5 Volt
Supply		 For powering 5V components ⓘ2A Max
N/A MPU Reset ⚠ Set high for >200ms then release
CAN
C1-16 MCU CAN0 High FD capable. Also available through the DB9 Pin 7
C1-15 MCU CAN0 Low FD capable. Also available through the DB9 Pin 2
N/A MCU CAN0 Enable Set to enable CANbus
C1-18 MCU CAN1 High
C1-17 MCU CAN1 Low
N/A MCU CAN1 Enable Set to enable CANbus
C4-12 MPU CAN2 High Linux Connected,
SocketCAN capable
C4-11 MPU CAN2 Low Linux Connected,
SocketCAN capable
C4-14 MPU CAN3 High Linux Connected,
SocketCAN capable
C4-13 MPU CAN3 Low Linux Connected,
SocketCAN capable
RS232
C3-9 MPU RS232 TX
C4-9 MPU RS232 RX
Ethernet
Front RJ45 MPU Fast Ethernet FE Label
Front RJ45 MPU Gigabit Ethernet GbE Label
USB
USB A Peripheral USB 2.0 Expandable with any USB splitter
HDMI
Full HDMI MPU Display HDMI 2.0 at 4Kp60
Digital
Outputs (DO)
Bank 1
C1-2 High Side Supply Supplies DO 1 – 5
C1-1 Digital Output 1 High Side (DO)
Low Side (DO/PWM)
Incl. 1.1A Resettable Fuse
C1-4 Digital Output 2 High Side (DO)
Low Side (DO/PWM)
Incl. 1.1A Resettable Fuse
C1-3 Digital Output 3 High Side (DO)
Low Side (DO/PWM)
Incl. 1.1A Resettable Fuse
C1-6 Digital Output 4 High Side (DO)
Low Side (DO/PWM)
Incl. 1.1A Resettable Fuse
C1-5 Digital Output 5

High Side (DO)
Low Side (DO/PWM)
Incl. 1.1A Resettable Fuse
Bank 3
C1-10 High Side Supply Supplies DO 6 – 10
C1-9 Digital Output 6 High Side (DO)
Low Side (DO/PWM)
Incl. 1.1A Resettable Fuse
C1-12 Digital Output 7 High Side (DO)
Low Side (DO/PWM)
Incl. 1.1A Resettable Fuse
C1-11 Digital Output 8 High Side (DO)
Low Side (DO/PWM)
Incl. 1.1A Resettable Fuse
C1-14 Digital Output 9 High Side (DO)
Low Side (DO/PWM)
Incl. 1.1A Resettable Fuse
C1-13 Digital Output 10 High Side (DO)
Low Side (DO/PWM)
Incl. 1.1A Resettable Fuse
Bank 2
C2-2 ⚠ High Side Supply  Supplies DO 11 – 16
C2-1 Digital Output 11 High Side (DO/PWM)
Low Side (DO/PWM)
Incl. 1.1A Resettable Fuse
C2-4 Digital Output 12 High Side (DO/PWM)
Low Side (DO/PWM)
Incl. 1.1A Resettable Fuse
C2-3 Digital Output 13 High Side (DO/PWM)
Low Side (DO/PWM)
Incl. 1.1A Resettable Fuse
C2-6 Digital Output 14 High Side (DO/PWM)
Low Side (DO/PWM)
Incl. 1.1A Resettable Fuse
C2-5 Digital Output 15 High Side (DO/PWM)
Low Side (DO/PWM)
Incl. 1.1A Resettable Fuse
C2-8 Digital Output 16 High Side (DO/PWM)
Low Side (DO/PWM)
Incl. 1.1A Resettable Fuse
Digital
Inputs (DI)
C2-10 MCU Digital Input 1 DI/QUAD2 B/PWM
C2-9 MCU Digital Input 2 DI/QUAD2 I/PWM
C2-12 MCU Digital Input 3 DI/QUAD2 A/PWM
C2-11 MCU Digital Input 4 DI/QUAD1 B/PWM
C2-14 MCU Digital Input 5 DI/QUAD1 I/PWM
C2-13 MCU Digital Input 6 DI/QUAD1 A/PWM
C4-8 MPU Digital Input 1 DI
C3-8 MPU Digital Input 2 DI
C4-7 MPU Digital Input 3 DI
C3-7 MPU Digital Input 4 DI
C4-10 MPU Digital Input 5 DI
C3-10 MPU Digital Input 6 DI
Analog
Input (AIn)
C4-5 MCU Analog Input 6 0-36V (configurable)Bi-polar ⓘ
C4-6 MCU Analog Input 5 0-36V (configurable)Bi-polar ⓘ
C4-3 MCU Analog Input 4 0-36V (configurable)Bi-polar ⓘ
C4-4 MCU Analog Input 3 0-36V (configurable)Bi-polar ⓘ
C4-1 MCU Analog Input 2 0-36V (configurable)Bi-polar ⓘ
C4-2 MCU Analog Input 1 0-36V (configurable)Bi-polar ⓘ
C3-5 MPU Analog Input 6 0-36V (configurable)
C3-6 MPU Analog Input 5 0-36V (configurable)
C3-3 MPU Analog Input 4 0-36V (configurable)
C3-4 MPU Analog Input 3 0-36V (configurable)
C3-1 MPU Analog Input 2 0-36V (configurable)
C3-2 MPU Analog Input 1 0-36V (configurable)
  •  
FlexCase S
 FlexBench

 

C1 – 18 Pin header, C2 – 30 Pin header, Internal pin


 

Breakout Board (C3),
I/O Connector 1 (C1),  I/O Connector 2 (C2), Internal pin.

: FlexCase S Pro & FlexBench Only

:  FlexBench Only

Current Version: 1.2 – Previous Versions

Connector Pin # Function Application Comment
  Power  
FCS C2-H1
FB C2-7/8
FB C3-37/38/77/78		 + Supply Voltage 8-36V (Unswitched)ⓘ Measure Supply Voltage ⓘ Measure Current
FCS C2-H3
FB C2-14
FB C3-74		 Ignition
Input		 On/Off Switch (Barrel jack automatically sets On)
ⓘ Keep On
FCS C2-H2/G1
FB C2-1/2/3/4
FB C3-39/40/79/80		 Ground Grounds are common. Also avilable through barrel jack on FB.
FCS C2-D1
FB C2-9/10/11/12
FB C3-35/36/75/76		 +5 Volt
Supply		 For powering 5V components (2A Max)
  +5V Supply Enable Set to enable +5V EXT
  Sensors  
  IMU Configurable,MISO, MOSI, CLK, CS,Int1, Int2
  Buzzer PWM Output (3000-5000 Hz)
  Board Version Analog Measurement
  Power Good Digital Measurement
  Ignition Digital Measurement
  Coms  
  MCU-MPU SPI

MCU (Typically Slave): MISO, MOSI, CLK, CS

MPU (Typically Master): MISO, MOSI, CLK, CS

  MPU-MPU GPIO Request MCU <-> MPU
  MPU-MPU GPIO MCU <-> MPU
  MPU Reset ⚠ Set high for >200ms then release
  MPU Sleep ⚠ User for low power applications
  LED 1 MPU Activity Light
  LED 2 User Controllable Light
  MPU-IoT Coms  
  UART USB recommended DTR, MPU RX, MPU TX, CTS, RTS
  USB USB
  VUSB Enable Set to enable USB communication
  Reset Digital Output. Set to enable.
  ON/OFF Enable Digital Output. Set to enable.
  Ref Voltage Power Digital Output. Set to enable.
  Status Digital Measurement
  CAN  
FCS C1-A1
FB C1-7
FB C3-27		 MCU CAN0 High FD capable. Also pin 7 DB9 on FB.
FCS C1-B1
FB C1-5
FB C3-28		 MCU CAN0 Low FD capable. Also pin 2 DB9 on FB.
  MCU CAN0 Enable Set to enable CANbus
FCS C1-C2
FB C1-3
FB C3-29		 MCU CAN1 High  
FCS C1-C3
FB C1-1
FB C3-30		 MCU CAN1 Low  
  MCU CAN1 Enable Set to enable CANbus. Enable bus termination via dip switch (FB Only)
FCS C2-E2
FB C1-4
FB C3-69		 MCU CAN2 High  
FCS C2-E3
FB C1-2
FB C3-70		 MCU CAN2 Low  
  MCU CAN2 Enable Set to enable CANbus. Enable bus termination via dip switch (FB Only)
  Ethernet  
FCS C1-A2
FB FE RJ45		 MPU RX- T568B Green, RJ45 pin 6.
FCS C1-A3
FB FE RJ45		 MPU RX+ T568B Green White, RJ45 pin 3.
FCS C1-B2
FB FE RJ45		 MPU TX- T568B Orange, RJ45 pin 2.
FCS C1-B3
FB FE RJ45		 MPU TX+ T568B Orange White, RJ45 pin 1.
FB GbE RJ45 Gigabit Ethernet GbE RJ45 Connector
  USB  
FCS C2-G2
FB USB		 USB 1 Data Positive USB 2.0 Data Positive
FCS C2-G3
FB USB		 USB 1 Data Negative USB 2.0 Data Negative
  HDMI  
FB HDMI HDMI2.0 HDMI 2.0 Available on via Mini HDMI connector
  Standard Serial  
FB C2-15
FB C3-33		 RS232 TX / RS485 B  Optional on FlexBench 1.2
FB C2-13
FB C3-34		 RS232 RX / RS485 A  Optional on FlexBench 1.2
  Digital Outputs (DO)  
  Bank 1  
  Digital Output Enable Set to enable all Digital Output banks
FCS C2-A3
FB C1-38/40
FB C3-41/42		 ⚠ High Side Supply  Supplies DO 1 – 5
FCS C1-C1
FB C1-36
FB C3-43		 MCU Digital Output 1 High Side (DO/PWM)
Low Side (DO/PWM)
FCS C1-D3
FB C1-34
FB C3-44		 MCU Digital Output 2 High Side (DO/PWM)
Low Side (DO/PWM)
FCS C1-D2
FB C1-32
FB C3-45		 MCU Digital Output 3 High Side (DO/PWM)
Low Side (DO/PWM)
FCS C1-D1
FB C1-30
FB C3-46		 MCU Digital Output 4 High Side (DO/PWM)
Low Side (DO/PWM)
FCS C1-E3
FB C1-28
FB C3-47		 MCU Digital Output 5

High Side (DO/PWM)
Low Side (DO/PWM)
  Bank 3  
  Digital Output Enable Set to enable all Digital Output banks
FCS C2-E1
FB C1-18/20
FB C3-61/62		 ⚠ High Side Supply  Supplies DO 6 – 10
FCS C1-E2
FB C1-16
FB C3-63		 MCU Digital Output 6 High Side (DO/PWM)
Low Side (DO/PWM)
FCS C1-E1
FB C1-14
FB C3-64		 MCU Digital Output 7 High Side (DO/PWM)
Low Side (DO/PWM)
FCS C1-F3
FB C1-12
FB C3-65		 MCU Digital Output 8 High Side (DO/PWM)
Low Side (DO/PWM)
FCS C1-F2
FB C1-10
FB C3-66		 MCU Digital Output 9 High Side (DO/PWM)
Low Side (DO/PWM)
FCS C1-F1
FB C1-8
FB C3-67		 MCU Digital Output 10 High Side (DO/PWM)
Low Side (DO/PWM)
  Bank 2  
  Digital Output Enable Set to enable all Digital Output banks
FCS C2-A1
FB C1-37/39
FB C3-1/2		 ⚠ High Side Supply  Supplies DO 11 – 16
FCS C2-A2
FB C1-35
FB C3-3		 MCU Digital Output 11 High Side (DO/PWM)
Low Side (DO/PWM)
FCS C2-B3
FB C1-33
FB C3-4		 MCU Digital Output 12 High Side (DO/PWM)
Low Side (DO/PWM)
FCS C2-B2
FB C1-31
FB C3-5		 MCU Digital Output 13 High Side (DO/PWM)
Low Side (DO/PWM)
FCS C2-B1
FB C1-29
FB C3-6		 MCU Digital Output 14 High Side (DO/PWM)
Low Side (DO/PWM)
FCS C2-C3
FB C1-27
FB C3-7		 MCU Digital Output 15 High Side (DO/PWM)
Low Side (DO/PWM)
FCS C2-C1
FB C1-25
FB C3-8		 MCU Digital Output 16 High Side (DO/PWM)
Low Side (DO/PWM)
  Digital Inputs (DI)  
  MCU Digital Input Pull Up Enable Set high to enable Digital Input Pull Ups
FCS C2-C2
FB C1-19
FB C3-21		 MCU Digital Input 1 DI/QUAD2 B/PWM
FCS C2-D2
FB C1-17
FB C3-22		 MCU Digital Input 2 DI/QUAD2 I/PWM
FCS C2-D3
FB C1-15
FB C3-23		 MCU Digital Input 3 DI/QUAD2 A/PWM
FCS C2-F1
FB C1-13
FB C3-24		 MCU Digital Input 4 DI/QUAD1 B/PWM
FCS C2-F2
FB C1-11
FB C3-25		 MCU Digital Input 5 DI/QUAD1 I/PWM
FCS C2-F3
FB C1-9
FB C3-26		 MCU Digital Input 6 DI/QUAD1 A/PWM
FB C2-24
FB C3-59		 MPU Digital Input 1 DI
FB C2-22
FB C3-60		 MPU Digital Input 2 DI
FB C2-23
FB C3-19		 MPU Digital Input 3 DI
FB C2-21
FB C3-20		 MPU Digital Input 4 DI
FB C2-20
FB C3-71		 MPU Digital Input 5 DI
FB C2-18
FB C3-72		 MPU Digital Input 6 DI
FB C2-19
FB C3-31		 MPU Digital Input 7 DI
FB C2-17
FB C3-32		 MPU Digital Input 8 DI
  Analog Input (AIn)  
FCS C2-J1
FB C2-29
FB C3-16		 MCU Analog Input 6 0-36V (configurable)
FCS C2-J2
FB C2-31
FB C3-15		 MCU Analog Input 5 0-36V (configurable)
FCS C2-J3
FB C2-33
FB C3-14		 MCU Analog Input 4 0-36V (configurable)
FCS C2-K1
FB C2-35
FB C3-13		 MCU Analog Input 3 0-36V (configurable)
FCS C2-K2
FB C2-37
FB C3-12		 MCU Analog Input 2 0-36V (configurable)
FCS C2-K3
FB C2-39
FB C3-11		 MCU Analog Input 1 0-36V (configurable)
FB C2-40
FB C3-51		 MPU Analog Input 1 0-36V (configurable)
FB C2-38
FB C3-52		 MPU Analog Input 2 0-36V (configurable)
FB C2-36
FB C3-53		 MPU Analog Input 3 0-36V (configurable)
FB C2-34
FB C3-54		 MPU Analog Input 4 0-36V (configurable)
FB C2-32
FB C3-55		 MPU Analog Input 5 0-36V (configurable)
FB C2-30
FB C3-56		 MPU Analog Input 6 0-36V (configurable)
FB C2-28
FB C3-57		 MPU Analog Input 7 0-36V (configurable)
FB C2-26
FB C3-58		 MPU Analog Input 8 0-36V (configurable)

FlexCase E & FlexCase G

First release: 2022

Alternative names: FlexCase Mini (Prior to Dec 2022)

ISO-Audesse-V2

ISO-Audesse-Perspective

FlexCase E

Revision Changelog Known Issues

1.0

Released Aug 9, 2019
Status EOL

 First Release Only used as prototyping units on the S32K3 Platform.

2.0

Released Sep 1, 2023
Status Active

Significantly new design. Change log not supplied.
  •  

2.1

Status Under Planning

 

 
     
First public release. Few in circulation

Released Dec 1 2022.

FlexCase E FlexCase R (OEM)

Color legend: C1 – 18 Pin header, C2 – 30 Pin header, Internal pin.

= MPU Version only (CM4)

Current Version: 1.0

Color legend: C1 – 8 Pin header, C2 – 30 Pin header, C3 – 4 Pin header, C4 – 30 Pin header, Internal pin.

= MPU Version only (CM4)

Current Version: 1.0

Note: The FlexCase E and R (OEM SBC) are almost identical except for a change of connectors. The FlexCase E is intented for IP rated applications whereas the OEM version is more suited for custom integrations.

FlexCase
E Pin #		 OEM
SBC
Pin #		 Function Application Comment
Power
C2-H1 C1-1 + Supply Voltage 8-36V (Unswitched)ⓘ Measure Supply Voltage ⓘ Measure Current
C2-H3 C1-6 Ignition
Input		 On/Off Switch
ⓘ Keep On
C2-H2 C1-2 Ground Grounds are common
C2-G1 C2-23
C4-29		 Ground Grounds are common
C2-D1 C1-5
C2-21		 +5 Volt
Supply		 For powering 5V components. 2A Max
+5V Supply Enable Set to enable +5V EXT
Sensors
IMU ConfigurableMISO, MOSI, CLK, CS,Int1, Int2
Board Version Analog Measurement
Power Good Digital Measurement
Ignition Digital Measurement
Coms
MCU-MPU SPI MCU (Typically Slave): MISO, MOSI, CLK, CS

MPU (Typically Master): MISO, MOSI, CLK, CS1
MCU-MPU UART MCU <-> MPU
MPU-MPU GPIO 1 MCU <-> MPU
MPU-MPU GPIO 0 MCU <-> MPU
MPU Reset ⚠ Set high for >200ms then release
MPU Sleep ⚠ User for low power applications
MPU-IoT Coms Nimbelink/Airgain Skywire Compatible
UART USB recommended DTR, MPU RX, MPU TX, CTS, RTS
USB USB
VUSB Enable Set to enable USB communication
Reset Digital Output. Set to enable.
ON/OFF Enable Digital Output. Set to enable.
Ref Voltage Power Digital Output. Set to enable.
Status Digital Measurement
CAN
C1-A1 C4-23
C1-3		 MCU CAN0 High FD capable
C1-B1 C4-21
C1-7		 MCU CAN0 Low FD capable
MCU CAN0 Enable Set to enable CANbus
C1-C2 C4-19
C1-4		 MCU CAN1 High FD capable
C1-C3 C4-17
C1-8		 MCU CAN1 Low FD capable
MCU CAN1 Enable Set to enable CANbus
C1-A2 C2-22 MCU CAN2 High FD capable
C1-B2 C2-24 MCU CAN2 Low FD capable
MCU CAN2 Enable Set to enable CANbus
C1-A3 C2-18 MCU CAN3 High FD capable
C1-B3 C2-20 MCU CAN3 Low FD capable
MCU CAN3 Enable Set to enable CANbus
LIN
C2-C3 C4-25 MCU LIN Out RX, TX,ENABLE
Ethernet
C1-D1 C2-1 MPU MX1 Positive T568B Orange White, RJ45 pin 1
C1-D2 C2-8 MPU MX1 Negative T568B Orange, RJ45 pin 2
C1-D3 C2-5 MPU MX2 Positive T568B Green White, RJ45 pin 3
C1-E1 C2-10 MPU MX3 Positive T568B Blue, RJ45 pin 4
C1-E2 C2-12 MPU MX3 Negative T568B Blue White, RJ45 pin 5
C1-E3 C2-7 MPU MX2 Negative T568B Green, RJ45 pin 6
C1-F1 C2-9 MPU MX4 Positive T568B Brown White, RJ45 pin 7
C1-F2 C2-11 MPU MX4 Negative T568B Brown, RJ45 pin 8
USB
C2-A3 C2-17 USB 1 Data Positive USB 2.0 Data Positive
C2-A2 C2-19 USB 1 Data Negative USB 2.0 Data Negative
USB 2 USB 2.0 Available on via USB C connector
HDMI
HDMI2.0 HDMI 2.0 Available on via Mini HDMI connector
RS
C2-G3 C2-16 RS 232 TX
C2-G2 C2-14 RS 232 RX
C2-B3 C2-13 RS 485 A
C2-B2 C2-15 RS 485 B
Digital
Outputs (DO)
Bank 1
Digital Output Enable Set to enable Digital Outputs
C1-F3 C2-29 High Side Supply Supplies DO 1 – 4
C1-C1 C2-26 MCU Digital Output 1 High Side (DO/PWM)
Low Side (DO/PWM)
C2-A1 C2-28 MCU Digital Output 2 High Side (DO/PWM)
Low Side (DO/PWM)
C2-B1 C2-30 MCU Digital Output 3 High Side (DO/PWM)
Low Side (DO/PWM)
C2-C1 C2-25 MCU Digital Output 4 High Side (DO/PWM)
Low Side (DO/PWM)
  Bank 2
Digital Output Enable Set to enable Digital Outputs
C4-2 High Side Supply Supplies DO 5 – 8
C4-6 MCU Digital Output 5 High Side (DO/PWM)
Low Side (DO/PWM)
C4-1 MCU Digital Output 6 High Side (DO/PWM)
Low Side (DO/PWM)
C4-3 MCU Digital Output 7 High Side (DO/PWM)
Low Side (DO/PWM)
C4-4 MCU Digital Output 8 High Side (DO/PWM)
Low Side (DO/PWM)
Digital
Inputs (DI)
Digital Input Enable Set high to enable Digital Input Pull Ups
C2-F3 C1-8 MCU Digital Input 1 DI /PWM
C2-F2 C1-10 MCU Digital Input 2 DI /PWM
C2-F1 C1-12 MCU Digital Input 3 DI /PWM
C2-E3 C1-14 MCU Digital Input 4 DI /PWM
C2-E2 C1-16 MCU Digital Input 5 DI /PWM
C2-E1 C1-18 MCU Digital Input 6 DI /PWM
C2-D3 C1-20 MCU Digital Input 7 DI /PWM
C2-D2 C1-22 MCU Digital Input 8 DI /PWM
C2-C2 C1-24 MCU Digital Input 9 DI /PWM
C1-26 MCU Digital Input 10 DI /PWM
C1-28 MCU Digital Input 11 DI /PWM
C1-30 MCU Digital Input 12 DI /PWM
Analog
Input (AIn)
C2-K3 C4-5 MCU Analog Input 1 0-36V Configurable
C2-K2 C4-7 MCU Analog Input 2 0-36V Configurable
C2-K1 C4-9 MCU Analog Input 3 0-36V Configurable
C2-J3 C4-11 MCU Analog Input 4 0-36V Configurable
C2-J2 C4-13 MCU Analog Input 5 0-36V Configurable
C2-J1 C4-15 MCU Analog Input 6 0-36V Configurable
C3-3 MCU Analog Diff 1 High 500mV Difference. High voltage tolerant.
C3-4 MCU Analog Diff 1 Low 500mV Difference. High voltage tolerant.
C3-1 MCU Analog Diff 2 High 500mV Difference. High voltage tolerant.
C3-2 MCU Analog Diff 2 Low 500mV Difference. High voltage tolerant.
RESERVED
Board to board		 Available for volume orders.
GPIO Reserved GPIO1, GPIO2, GPIO3, GPIO4, GPIO5, GPIO6
Analog Input Reserved AIN0, AIN1, AIN2, AIN3, AIN4
UART Reserved RX, TX
I2C Reserved SCL, SDA
SPI Reserved SIN, SOUT, CLK, CS0, CS1

First public release. Limited Release.

Released Sept 2023.