TMS37F158 Datasheet, PDF (1/8 Pages) Texas Instruments – CONTROLLER ENTRY DEVICE WITH INTEGRATED DST80 AUTHENTICATION, EEPROM, AND LF IMMOBILIZER INTERFACE

TMS37F158
www.ti.com
SCBS877 – MAY 2012
CONTROLLER ENTRY DEVICE WITH INTEGRATED DST80 AUTHENTICATION, EEPROM,
AND LF IMMOBILIZER INTERFACE
Check for Samples: TMS37F158
FEATURES
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• Wide Supply Voltage Range: 2.0 V to 3.6 V
• Ultra-Low Power Consumption
– CPU Active Mode: 200 μA/MHz at 2.2 V
– Standby Mode (LPM3): 0.7 μA
– Off Mode (LPM4): 0.1 μA
– Power Down Mode: 60 nA
• Microcontroller System and Peripherals
– 16-Bit RISC Architecture, 125-ns Instruction
Cycle Time
– Wake-Up From Standby Mode in <6 μs
– Basic Clock Module Configurations
– Single External Resistor
– 32-kHz Crystal
– High-Frequency Crystal
– Resonator
– External Clock Source
– 16-Bit Timer_A With Three
Capture/Compare Registers
– 8KB + 256B Flash Memory
– 256B RAM
– 150-Byte EEPROM
– Serial Onboard Programming, No External
Programming Voltage Needed
– Programmable Code Protection by Security
Fuse
– 80-Bit DST80 Security Authentication
Coprocessor
– 12 I/O Ports
– Integrated Push-Button Logic
• Low-Frequency (LF) Immobilizer Interface
– Integrated Batteryless Immobilizer Interface
– Half-Duplex (HDX) Immobilizer
Communication Achieves up to 4-in (10-cm)
Read Range
– Special Selective Addressing Mode Allows
Reliable Learn-In Sequence
– 80-Bit Authentication Key Length
– Up to 8-kbit/s Uplink Data Rate
– 5/3-Byte Challenge/Response Algorithm
– Fast Authentication Within 42 ms
– Fast Mutual Authentication Within 65 ms
– 150-Byte EEPROM
– 124-Byte Available EEPROM User
Memory
– 32-Bit Unique Serial Number
– High EEPROM Security and Flexibility
– Write-Only Authentication Keys
– Pages Are Irreversibly Lockable and
Protectable
– Protected Pages Programmable Only
Through Mutual Authentication
– Battery Check and Charge Functions
– Each User Page is Lockable
– Resonant Frequency: 134.2 kHz
– Integrated Resonant Frequency Trimming
DESCRIPTION
The TMS37F158 Controller Entry Device (CED80) combines an ultra-low-power 16-bit RISC microcontroller with
the proven TI DST80 immobilizer interface and a sophisticated power management system. It is the ideal device
for any remote control or remote keyless entry application. The embedded DST80 low-frequency (LF)immobilizer
interface offers a high level of security through its hardware encryption and mutual authentication with 80-bit
security key length. The immobilizer interface is always accessible and operates without the need for a battery.
The low-power microcontroller MSP430 core offers a 16-bit RISC architecture, 8KB program memory, battery
charge and check functions, and 12 user-accessible I/O ports.
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Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2012, Texas Instruments Incorporated