Quick Start Guide for TWRPI-MMA845xQ
Quick Start Guide
10
11
Peripheral List
Headers and Connectors List
Header/
Connector Description
J1
GPIO header (LCD replacement option), ports A, D and F
J3
GPIO header, port AD
J4
I
2
C header
J5
GPIO header (LCD replacement option), ports B, H, G and F
J6
Extended debug lines
J7
GPIO header, ports T and S
J9
SPI header
J13
Main power barrel connector (up to 18 V)
J21
Stepper motor 0 header
J23
Stepper motor 1 header
J25
GPIO header, ports P and C
J27
Stepper motor 2 header
J29
Stepper motor 3 header
J30
S12ZVH128 BDM port (external program and debug interface)—Main MCU
J31
S08JM60 BDM port (external program and debug interface)—OSBDM MCU
J32
OSBDM USB port for programming and debugging the main MCU
J45
LIN connector (not populated)
J46
LIN connector
J47
CAN connector
J48
SCI connector
Peripheral
ID
MCU
Port
Description
Potentiometer
R3
AD0
Potentiometer connected to ADC channel 0
LED
D9
P0
Blue LED connected to port P0
D8
P1
Blue LED connected to port P1
D7
P2
Blue LED connected to port P2
D6
P3
Blue LED connected to port P3
D1
-
VBATT LED, ON when voltage is applied to the board
D3
-
MCU PWR LED, ON when the MCU is regulating the input
voltage to 5 V
D4
-
OSBDM PWR LED, ON when OSBDM is successfully
enumerated as USB device
Button
SW1
T3
Switch connected to port T3
SW2
T2
Switch connected to port T2
SW3
T1
Switch connected to port T1
SW4
T0
Switch connected to port T0
SW6
-
Reset switch
TRK-S12ZVH128
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