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Freescale Semiconductor
Advance Information
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.

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1 Orderable Parts
This section describes the part numbers available to be purchased along with their differences. Valid orderable part numbers are
provided on the web. To determine the orderable part numbers for this device, go to http://www.freescale.com and perform a part number
search for the following device numbers.
Table 1. Orderable Part Variations
Part Number (3)
MM912JS812AMAF
MM912KS812AMAF
MCU
S12XS
Temperature (TA)
-40 to 125 °C
Notes
3. To Order parts in Tape & Reel, add the R2 suffix to the part number.
Flash Memory
128 k
256 k
RAM
8.0 k
12 k
Package
100 pin LQFP-EP
Table 2. Calibration Tools
Part Number
MC9S12XEP100 (MCU Only)
PV912NE812AMAF
S12XEP
S12XEP + MC33812
Package
Multiple
100 pin LQFP-EP
Contact sales for availability and quantity
+5 V
VBAT
S12XS
VDDF
VSS1
PAD00
PAD01
VDD
*PB3
*PT1
PAD02
PAD03
RESET
PAD04
PAD05
PAD06
*PT4
*PP2
PAD07
*PE6
PAD09
MOSI
SCK
SS
MISO
*PP0
*PA1
*PA5
RXD
TXD
IRQ VDD
TXCAN
VSS
RXCAN VDDPLL
EXTAL VSSPLL
XTAL VSS
PNP
+5 V
VPWR
33812
LAMPOUT
VCCREF
VCCSENS
LAMPIN
RIN
RESET
WDRFSH
INJIN
INJFLT
IGNIN
IGNFLT
RELFLT
MRX
MTX
ROUT
INJOUT
IGNSUP
IGNFB
IGNOUTH
IGNOUTL
TM_EN, TEST2
WD_INH
PGND1,2,1A,2A
DGND
ISO9141
EP
Notes:
1)Surge Voltage protection
recommended on VPWR
2) Not all connections on MCU
shown
MIL VBAT
VBAT RELAY OR
OTHER LOAD
INJECTOR
VBAT
VBAT
VPWR
ISO9141
* I/O pins indicated are examples only and not necessarily recommendations
Figure 2. 912_S812 Detailed Application Diagram
912_S812
2
Analog Integrated Circuit Device Data
Freescale Semiconductor

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2 Part Identification
This section provides an explanation of the part numbers and their alpha numeric breakdown.
2.1 Description
Part numbers for the chips have fields that identify the specific part configuration. You can use the values of these fields to determine the
specific part you have received.
2.2 Format and Examples
Part numbers for a given device have the following format, followed by a device example:
Table 3 - Part Numbering - Analog EMBEDDED MCU + POWER:
MM 9 cc f xxx r v PPP RR - MM912JS812AMAF
2.3 Fields
These tables list the possible values for each field in the part number (not all combinations are valid).
Table 3. Part Numbering - Analog EMBEDDED MCU + POWER
FIELD
DESCRIPTION
VALUES
• MM- Qualified Device
MM
Product Category
• SM- Custom Device
• PM- Prototype Device
9
Memory Type
• 9 = Flash, OTP
cc
Micro Core
• 12 = HC12
f
Memory Size
• J 128 k
• K 256 k
xxx
Analog Core/Target
• 812 - MC33812
r
Revision
• (default A)
t
Temperature Range
• M = -40 °C to 125 °C
v
Variation
• (default blank)
PPP
Package Designator
• AF - 100 lead LQFP with exposed pad
RR
Tape and Reel Indicator
• R2
Analog Integrated Circuit Device Data
Freescale Semiconductor
912_S812
3