33813 datasheet(7/54 Pages) FREESCALE

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Analog Integrated Circuit Device Data



Freescale Semiconductor

33813

BATSW

Output

Battery Switch

This output is a 5.0 V logic level that is high when KEYSW is high. It is only

low when KEYSW is low. It can also be controlled via the SPI. The BATSW

output may not be present in a different package but it’s function can be read

by the SPI.

INJIN1

Input

Injector Driver Input 1 5.0 V logic level input from the MCU to control the injector 1 driver output (Can

also be controlled via the SPI)

IGNIN1

Input

Ignition Input 1

5.0 V logic level input from MCU controlling the ignition coil # 1 current flow

and spark. (Can also be controlled via the SPI)

O2HIN

Input

O2 Sensor Heater

Input

5.0 V logic level input used to turn on and off the O2HOUT driver. The

O2HOUT driver can also be turned on and off via the SPI if this pin is not

present in a different package.

RIN2

Input

Relay Driver Input 2 5.0 V logic level input from the MCU to control the relay 2 driver output

ROUT2. The ROUT2 driver can also be turned on and off via the SPI if this

pin is not present in a different package.

RIN1

Input

Relay Driver Input 1 5.0 V logic level input from the MCU to control the relay 1 driver output

ROUT1. The ROUT1 driver can also be turned on and off via the SPI if this

pin is not present in a different package.

KEYSW

Input

Key Switch Input

The Key Switch Input is a VPWR level signal that indicates that the Key is

inserted and turned to the ON/OFF position. In the ON position the

(KEYSW = VBAT) the IC is enabled and BATSW = HIGH (Relay 2 ON if

programmed in SPI). In the OFF position the IC is in Sleep mode, only when

the PWREN bit in the SPI register is also low.

INJGND2

Ground

Injector Driver

Ground

Ground connection for injector low side driver. Must be tied to VPWR ground.

RGND1

Ground

ROUT1 Power

Ground

Ground connection for ROUT 1 low side driver. Must be tied to VPWR ground.

ROUT1

Output

Relay Driver 1 Output Low Side Relay Driver Output # 1 driven by the SPI input command or RIN1

logic input

INJGND1

Ground

Injector Driver 1

Ground

Ground connection for injector 1 low side driver. Must be tied to VPWR

ground.

INJOUT1

Output

Injector Driver 1

Output

Low side driver output for injector 1 driven by the SPI input or by parallel input

INJIN1

ISO9141

Input/Output

ISO9141 K-Line

Bidirectional Serial

Data Signal

ISO9141 pin is VPWR level IN/OUT signal which is connected to an external

ECU tester that uses the ISO9141 protocol. The output is open drain and the

Input is a ratiometric VPWR level threshold comparator.

IGNFB1

Input

Feedback from

Collector 1

Voltage feedback from collector of ignition # 1 driver IGBT through 10:1

voltage divider (9R:1R)

IGNOUT1

Output

Ignition Output 1

Output to gate of IGBT or GPGD for ignition # 1

Table 2. 33813 Pin Definitions

A functional description of each pin can be found in the Functional Pin Description section beginning on page 24.

Pin Name

Function

Formal Name

Description

33813 Datasheet(PDF) 7 Page - Freescale Semiconductor, Inc

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