ST72521R9-Auto STMicroelectronics, ST72521R9-Auto Datasheet - Page 177

• Manufacturer Part Number: ST72521R9-Auto
• Description: 8-bit MCU for automotive
• Manufacturer: STMicroelectronics

Specifications of ST72521R9-Auto

• Hdflash Endurance: 100 cycles, data retention 20 years
• Clock Sources: crystal/ceramic resonator oscillators, internal RC oscillator and bypass for external clock
• 4 Power Saving Modes: Halt, Active Halt, Wait and Slow

ST72521xx-Auto
17.3.2
Hardware blocks
The CAN controller contains the following functional blocks (refer to
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ST7 interface: buffering of the ST7 internal bus and address decoding of the CAN
registers
TX/RX buffers: three 10-byte buffers for transmission and reception of maximum length
messages
ID filters: two 12-bit compare and don’t care masks for message acceptance filtering
PSR: page selection register (see memory map)
BRPR: clock divider for different data rates
BTR: bit timing register
ICR: interrupt control register
ISR: interrupt status register
CSR: general purpose control/status register
TECR: transmit error counter register
RECR: receive error counter register
BTL: bit timing logic providing programmable bit sampling and bit clock generation for
synchronization of the controller
BCDL: bit coding logic generating a NRZ-coded datastream with stuff bits.
SHREG: 8-bit shift register for serialization of data to be transmitted and parallelization
of received data
CRC: 15-bit CRC calculator and checker
EML: error detection and management logic
CAN core: CAN 2.0B passive protocol controller
Doc ID 17660 Rev 1
Controller area network (CAN)
Figure
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