112-pin Module Family

There are two ECUs in the 112-pin family - the ECM-5554-112-0904 (PCM-09) and the New ECM-5644-112 (ECM-OH).

ECM-5554-112-0904

Hardware Features

Microprocessor: Motorola MPC5554, 80 MHz

Memory: 2MB Flash, 64K RAM, + 32K Cache, 32K EEPROM

Calibratible Memory: 512k (256k x2) RAM

Operating Voltage: 9-16VDC, 24V (Jump start), 4.5V (Crank)

Operating Temperature: -40° to 105° C

Inputs

VR and Digital Engine Position Sensor (crank and cam) Inputs

33 Analog Inputs

4 Oxygen Sensor Inputs

3 Speed (digital) Inputs

2 Knock Sensor Inputs

1 Emergency Stop Input

Outputs

8 Injector (high impedance) Outputs

8 Electronic Spark Trigger (5V) Outputs

1 Tachometer or Link Interface Output

14 Low Side Outputs

1 Main Power Relay Driver Output

2 H-Bridge Outputs

Datalinks

3 CAN buses

1 RS485 Channel

GCM-5554-112-1001

The 112 pin General Control Module is the same as the ECM-5554-112-0904 above except with engine related IO replaced by analog inputs for general control purposes.

The following are the changes from ECM-5554-112 to GCM-5554-112:

• pins EST1 to EST8 change to AN34 to AN41 (3k-ohm pull-down, with a diode drop between pull-down resistor and ground).
• AN1, AN2, AN3, AN26, AN27, AN28 change from 51.1k pull-down to 220k-ohm pull-down.
• GCM-5554-112 does not populate the internal CAN3 termination: all 3 CAN buses are un-terminated internally.

Differences between the ECM-5554-112-0904 and the GCM-5554-112-1001 are also shown in the diagram below.

1751-6456 (PROD) 1751-6457 (DEV)

ECM-5644-112 ECM-OH

This is our newest module! Check out features and additional information on the ECM-OH wiki page.

These are Preliminary Specifications and subject to change.

Hardware

112-pin platform

Main micro: MPC5644A, 120 MHz

Auxiliary micro: S12G48, 24MHz

Memory: 2M flash, 128K RAM, 32K external serial EE; S12G: 48K flash, 4k RAM, 1.5K EE,

Calibratible micros: MPC5644A, 4M flash, 192K RAM; S12G128, 128k flash, 8K RAM, 4K EE

Operating Voltage: 8–32 Vdc,36 V (jump start), 5.5 V (crank)

Operating Temperature: –40 to +105°C

Inputs

VR or digital crank position sensor

VR or digital cam position sensor

Up to 31 analog inputs

Up to 4 switching oxygen sensors

Up to 2 wide-range oxygen sensors

2 knock sensors

Up to 6 speed inputs

Outputs

8 injector drivers (6 peak/hold capable)

8 ignition coil drivers or spark timer outputs

1 tachometer driver

Up to 19 low-side drivers (1 w/current sense)

1 main power relay driver

2 H-bridge drivers w/current sense

3 sensor supplies (2-5V, 1-12V)

Communications

3 CAN 2.0b buses

1 RS-485 bus