SCBS879A May 2012 – January 2020 TMS37145
PRODUCTION DATA.
| Part Number | TMS37145TEAIE, TMS37145TEAIEG | |
|---|---|---|
| Features | Immobilizer plus microcontroller with integrated power management | |
| DST80 authentication logic | 80-bit key length, 4-byte or 5-byte challenge, 3-byte signature | |
| DST80 encryption time | Mutual authentication: 65 ms
Fast authentication: 42 ms |
|
| Transponder | ||
| Transmission principle | HDX (half duplex telegram protocol) | |
| Operating frequency | 134.2 kHz
Integrated resonant frequency trimming capability via LF or test interface |
|
| Security | Challenge/response, mutual authentication | |
| Downlink | 100% AM, PPM bit coding with 2 kbit/s (typ) | |
| Uplink | FSK modulation with 7.9 kbit/s (typ) | |
| Read time for an encryption | PPM: 60 ms (typ) (including 20-ms charge time) | |
| Read time for mutual authentication | PPM: 85 ms (typ) (including 20-ms charge time) | |
| Protocol transmission security | 16-bit block check character | |
| Activation field strength | 141.5 dBµA/m | |
| Minimum required operation Q-factor | 30 | |
| EEPROM memory | 75 bytes | 48-byte free available EEPROM user memory |
| 32-bit unique serial number | ||
| Two 80-bit security keys | ||
| EEPROM endurance | 200 000 (min) write-erase cycles (TA = 25°C) | |
| Key learn-in | Special selective addressing to provide secure learn-in procedure | |
| Storage temperature | -40°C to 100°C (175°C for 5 minutes) | |
| Operating temperature | -40°C to 85°C | |
| Case material | Plastic | |
| Protection class | IP 68 | |
| EMC | Programmed code is not affected by natural electromagnetic interference or X-rays | |
| Mechanical shock | IEC 68-2-27, Test Ea; 200 g, half sine, 3 ms, 6 shocks per axis | |
| Vibration | IEC 68-2-6, Test Fc; 10 to 500 Hz, 1.65 mm peak to peak, 10 g, 4 hours per axis | |
| Dimensions | 12.0 mm ± 0.2 mm x 6.0 mm ± 0.2 mm x 3.0 mm ± 0.05 mm | |
| Weight | 0.4 g | |
| Packaging | Bulk (2000 units per box) | |