ST72561J6-Auto STMicroelectronics, ST72561J6-Auto Datasheet - Page 223
ST72561J6-Auto
Manufacturer Part Number
ST72561J6-Auto
Description
8-bit MCU for automotive
Manufacturer
STMicroelectronics
Datasheet
1.ST72561R9-AUTO.pdf
(324 pages)
Specifications of ST72561J6-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
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ST72561-Auto
managed completely by hardware. The application accesses the messages stored in the
FIFO through the FIFO output mailbox.
Valid message
A received message is considered as valid when it has been received correctly according to
the CAN protocol (no error until the last but one bit of the EOF field) and It passed through
the identifier filtering successfully, see
Figure 101. Receive FIFO states
FIFO management
Starting from the empty state, the first valid message received is stored in the FIFO which
becomes pending_1. The hardware signals the event setting the FMP[1:0] bits in the CRFR
register to the value 01b. The message is available in the FIFO output mailbox. The software
reads out the mailbox content and releases it by setting the RFOM bit in the CRFR register.
The FIFO becomes empty again. If a new valid message has been received in the
meantime, the FIFO stays in pending_1 state and the new message is available in the
output mailbox.
If the application does not release the mailbox, the next valid message will be stored in the
FIFO which enters pending_2 state (FMP[1:0] = 10b). The storage process is repeated for
the next valid message putting the FIFO into pending_3 state (FMP[1:0] = 11b). At this point,
EMPTY
FMP=0x00
FOVR=0
Release
Mailbox
Valid Message
Received
Doc ID 12370 Rev 8
Release
Mailbox
RFOM=1
Release
Mailbox
RFOM=1
Identifier
PENDING_1
FMP=0x01
FOVR=0
PENDING_3
FMP=0x11
FOVR=0
PENDING_2
FMP=0x10
FOVR=0
Valid Message
Received
Valid Message
Received
filtering.
Release
Mailbox
RFOM=1
Valid Message
Received
beCAN controller (beCAN)
Valid Message
Received
OVERRUN
FMP=0x11
FOVR=1
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