ST72561J9-Auto STMicroelectronics, ST72561J9-Auto Datasheet - Page 218

• 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)
17.3
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Figure 95. CAN block diagram
Figure 96. beCAN operating modes
Operating modes
The beCAN has three main operating modes: Initialization, Normal and Sleep. After a
hardware reset, beCAN is in Sleep mode to reduce power consumption. The software
requests beCAN to enter Initialization or Sleep mode by setting the INRQ or SLEEP bits in
the CMCR register. Once the mode has been entered, beCAN confirms it by setting the
INAK or SLAK bits in the CMSR register. When neither INAK nor SLAK are set, beCAN is in
NORMAL
SLAK= 0
INAK = 0
SLEEP
RESET
SLAK= 1
INAK = 0
Master Control
Interrupt Enable
Master Status
Transmit Status
Transmit Prio
Receive FIFO
Page Select
Error Status
Error Int. Enable
Tx Error Counter
Rx Error Counter
Diagnostic
Bit Timing
Filter Master
Filter Config.
Doc ID 12370 Rev 8
Transmission
Tx Mailboxes
Mailbox 1
Scheduler
Mailbox 0
INRQ
SLAK= X
INAK = X
SYNC
CAN 2.0B Active Core
Filter
Acceptance Filters
Mailbox 0
Receive FIFO
0
1 2
INITIALIZATION
1
1
3
2
SLAK= 0
INAK = 1
4
5
ST72561-Auto