Analog, Mixed-Signal and Power Management MM9Z1_638 and MM9Z1_638C0 pages

Analog, Mixed-Signal and Power Management

MM9Z1_638 and MM9Z1_638C
Xtrinsic Battery Sensor with Multiple Voltage and
Temperature Sense Inputs, MSCAN and LIN
Target Applications

Overview

•t Automotive
t Battery monitoring  
t
Hybrid electric vehicle (HEV)
t inverter controller  
•t Industrial
t Energy storage systems (ESS)  
t
Hybrid electric vehicle (HEV)
t
Cordless tools and appliances

The MM9Z1_638 and MM9Z1_638C are fully integrated battery monitoring devices for automotive
and industrial mission critical applications. The device integrates an S12Z microcontroller and a
SMARTMOS analog control IC into a single-package solution. The analog die combines
system basis and application-specific functions, including a Local Interconnect Network (LIN)
transceiver and a two-channel 16-bit sigma-delta (ΣΔ) analog-to-digital converter (ADC) for
simultaneous measurement of battery voltage and current.

An integrated temperature sensor combined with battery mounting allows accurate measurement
of battery temperature. Control of the analog die is through the high-performance internal
die-to-die interface (D2D), which seamlessly integrates the analog IC registers into the MCU
register map, providing faster access than SPI-based systems. The MM9Z1_638/634C also
includes an internal oscillator, 96 KB or 128 KB of flash memory and 8 KB of RAM, as well as an
MSCAN module. Multiple external temperature sensors are also supported.

MM9Z1_638 Simplified Application Drawing
MM9Z1_638
Battery
Pack

VSUP
VSENSE3
VSENSE2

T°
T°

VDDA
PTB2
PTB5
PTB1

LIN
VDDX

VSENSE1

PA0

VSENSE0

Shunt

Vehicle
LIN bus

TxD

ISENSEH
ISENSEL
GNDs

RxD
PTB4

EN
TX

VDD

CAN
Interface
RX
CANL CANH

Vehicle
CAN bus

Multiple Cell Monitoring, CAN & LIN Communication