33813 datasheet(4/54 Pages) FREESCALE

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Analog Integrated Circuit Device Data



Freescale Semiconductor

33813

Internal Block Diagram

Figure 2. Simplified Internal Block Diagram

Oscillator

INJIN1

VPP

VPWR

IGNIN1

SCLK

CSB

VCC

LOGIC CONTROL

SPI INTERFACE

Gate Control

Current Limit

Temperature Limit

Short/Open

(1 of 6 shown)

lLimit

VClamp

–

Typical of all 6 Driver Outputs

75 µA

INJOUT1

VPPREF

Bandgap

PARALLEL

CONTROL

Under-voltage

POR,

V10.0 Analog

V2.5 Logic

Bias

VRSN

VPPSENS

VRS CIRCUIT

VRSOUT

ROUT2

ISO9141

CONTROLLER

MRX

MTX

LAMPOUT

O2HOUT

VCC

RESETB

KEYSW

START LOGIC

ISO9141

VCC

Ignition 1

IGNOUT1

Pre-drivers

IGNFB1

O2HFB

O2 Heater

GND

O2HIN

INJGND1

INJGND2

TACHOUT

To TACHOUT Driver

VPROT

To ROUT2

Watchdog

(SPI CONTROL)

ROUT1

VCC

Pre-

Regulator

Over-voltage

Tracking

+5.0 V

Regulator

+5.0 V

VPWR

VAnalog

VLogic

BATSW

Parallel Control

SPI Control

Driver

–

lLimit

O2HSENSP

IGNSENSP

IGNSENSN

O2HSENSN

To Logic

Control

To Logic

Control

RIN1

RIN2

Note: All current sinks and sources ~50µA except where indicated

Regulator

& REGISTERS

RGND1

RGND2

Divide by “N”

N=1-32

Divider

(SPI)

VCC

SLEEP/RUN

VRSP

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