Product Overview
The TMS5704357BZWTQQ1 from Texas Instruments is a Hercules TMS570LC4357 automotive-grade ARM Cortex-R5F dual-core lockstep MCU with 4MB Flash, 512KB SRAM, FlexRay, 4×CAN, Ethernet MAC, and comprehensive safety diagnostics for ISO 26262 ASIL-D applications in a 337-ball NFBGA package.
Key Specifications
| Core | ARM Cortex-R5F (dual lockstep) |
| Max Clock Speed | 300 MHz |
| Program Flash | 4 MB (ECC protected) |
| SRAM | 512 KB (ECC protected) |
| Data Flash | 128 KB (EEPROM emulation, ECC) |
| ADC | 2× 12-bit (41 total channels) |
| Communication | 4×CAN, FlexRay, EMAC, 5×MibSPI, 4×UART, 2×I2C |
| Safety Features | CPU lockstep, BIST, ECC, ESM, clock monitor |
| Core Voltage | 1.14V to 1.32V |
| I/O Voltage | 3.0V to 3.6V |
| Operating Temperature | -40°C to +125°C |
| Package | NFBGA-337 (16×16mm) |
Features
- Dual-core lockstep Cortex-R5F with FPU
- 4MB ECC-protected Flash, 512KB ECC-protected SRAM
- 128KB data Flash for EEPROM emulation
- LBIST/PBIST for CPU and RAM self-test
- Error Signaling Module (ESM) with nERROR pin
- ECC on all memories: L1 cache, Flash, SRAM, peripheral RAM
- 10/100 Ethernet MAC (MII/RMII/MDIO)
- 2-channel FlexRay with 8KB message RAM
- 4× DCAN (CAN 2.0B) with 64 mailboxes each
- 2× N2HET timer coprocessors (64 I/O terminals)
- 7× ePWM, 6× eCAP, 2× eQEP
- AEC-Q100 qualified
Applications
- Automotive ASIL-D safety systems
- Electric vehicle motor control and BMS
- Industrial SIL-3 functional safety
- Railway and power grid control
- Steering and braking systems