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912_S812 Datasheet

S12XS MCU and Multifunctional Ignition and Injector Driver System

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S12XS MCU and Multifunctional
Ignition and Injector Driver System In
Package (SiP)
The MM912_S812 is an engine control SMARTMOS IC combining an MCU
(S12XS) and analog control die (MC33812) intended for motorcycle and other
single cylinder small engine control applications.The MCU S12XS has 8.0 KB or
12 KB RAM, and flash memory size of 128 KB or 256 KB. The S12XS family
retains many of the features of the S12XE family including error correction code
(ECC) on flash memory, a separate data-flash module for code or data storage,
a frequency modulated locked loop (IPLL) that improves the EMC performance
and a fast ATD converter.
Features:
• Designed to operate over the range of ~4.7 V VPWR 36 V
• Relay/injector/fuel pump driver – current limit – 4.0 A, typical
• Lamp driver – current limit – 1.5 A, typical
• All external outputs protected against short to battery and overcurrent
• VCC voltage pre-regulator provides +5.0 V power for the MCU
• MCU watchdog timer circuit with parallel refresh/time setting line
• ISO-9141 K-Line transceiver for communicating diagnostic messages
Document Number: MM912_S812
Rev. 2.0, 2/2015
912_S812
SMALL ENGINE CONTROL SIP
AF Suffix (Pb Free)
98ASA00371D
100 Pin LQFP-EP
5.0 V
VBAT
912_S812
VDD
VCCSENS
VCCREF
VPWR
LAMPIN
PB3
RIN
PP1
RESETB
RESETB
WDRFSH
I/O
INJIN
I/O
INJFLT
I/O
IGNIN
I/O
IGNFLT
I/O
RELFLT
I/O
MRX
RXD
MTX
TXD
EXTAL
XTAL
LAMPOUT
ROUT
INJOUT
IGNFB
IGNSUP
IGNOUTH
IGNOUTL
ISO9141
PAD00
PAD01
PAD02
PAD03
PAD04
PAD05
PAD06
PAD07
PAD09
MOSI
SCK
SSB
MISO
IRQB
PM1/TXCAN
PM0/RXCAN
TEST1
TM_EN, TEST2
WD_INH
PGND
VSS
DGND
VBAT VBAT
Relay or
other load
Injector
VBAT VBAT
VPWR
ISO9141
Notes
1. Surge Voltage protection recommended on VPWR
2. Not all connections on MCU shown
Figure 1. 912_S812 Simplified Application Diagram
* This document contains certain information on a new product.
Specifications and information herein are subject to change without notice.
© Freescale Semiconductor, Inc., 2013-2015. All rights reserved.
Freescale Semiconductor
Freescale Semiconductor



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