ST72561J9-Auto STMicroelectronics, ST72561J9-Auto Datasheet - Page 238

• Manufacturer Part Number: ST72561J9-Auto
• Description: 8-bit MCU for automotive
• Manufacturer: STMicroelectronics

Specifications of ST72561J9-Auto

• Hdflash Endurance: 100 cycles, data retention 20 years at 55 °C
• 5 Power Saving Modes: halt, auto wake up from halt, active halt, wait and slow

beCAN controller (beCAN)
17.8
17.8.1
238/324
Register description
Control and status registers
CAN master control register (CMCR)
Reset value: 0000 0010 (02h)
Bit 7 = Reserved, must be kept cleared.
Bit 6 = ABOM Automatic Bus-Off Management
Read/set/clear
This bit controls the behaviour of the CAN hardware on leaving the bus-off state.
For detailed information on the bus-off state please refer to
Bit 5 = AWUM Automatic Wake-Up Mode
Read/set/clear
This bit controls the behaviour of the CAN hardware on message reception during sleep
mode.
Bit 4 = NART No Automatic Retransmission
Read/set/clear
Bit 3 = RFLM Receive FIFO Locked Mode
Read/set/clear
Bit 2 = TXFP Transmit FIFO Priority
Read/set/clear
0: the bus-off state is left on software request.
Refer to
1: the bus-off state is left automatically by hardware once 128 x 11 recessive bits have
been monitored.
0: the sleep mode is left on software request by clearing the SLEEP bit of the CMCR
register.
1: the sleep mode is left automatically by hardware on CAN message detection. The
SLEEP bit of the CMCR register and the SLAK bit of the CMSR register are cleared by
hardware.
0: the CAN hardware will automatically retransmit the message until it has been
successfully transmitted according to the CAN standard.
1: a message will be transmitted only once, independently of the transmission result
(successful, error or arbitration lost).
0: receive FIFO not locked on overrun. Once a receive FIFO is full the next incoming
message will overwrite the previous one.
1: receive FIFO locked against overrun. Once a receive FIFO is full the next incoming
message will be discarded.
7
0
Error
ABOM
management, bus-off recovery.
AWUM
Doc ID 12370 Rev 8
NART
RFLM
Error
TXFP
management.
SLEEP
ST72561-Auto
INRQ
0