ST92124V1Q-Auto STMicroelectronics, ST92124V1Q-Auto Datasheet - Page 342

• Manufacturer Part Number: ST92124V1Q-Auto
• Description: 8-bit MCU for automotive
• Manufacturer: STMicroelectronics

Specifications of ST92124V1Q-Auto

• Internal Memory: Single Voltage FLASH up to 256 Kbytes, RAM up to 8Kbytes, 1K byte E3 TM (Emulated EEPROM)
• Minimum Instruction Time: 83 ns (24 MHz int. clock)

ST92124xxx-Auto/150xxxxx-Auto/250xxxx-Auto
CONTROLLER AREA NETWORK (Cont’d)
– The transmit interrupt can be generated by the
– The FIFO 0 interrupt can be generated by the
– The FIFO 1 interrupt can be generated by the
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following events:
following events:
following events:
– Transmit mailbox 0 becomes empty, RQCP0
– Transmit mailbox 1 becomes empty, RQCP1
– Transmit mailbox 2 becomes empty, RQCP2
– Reception of a new message, FMP bits in the
– FIFO0 full condition, FULL bit in the CRFR0
– FIFO0 overrun condition, FOVR bit in the
– Reception of a new message, FMP bits in the
– FIFO1 full condition, FULL bit in the CRFR1
– FIFO1 overrun condition, FOVR bit in the
bit in the CTSR register set.
bit in the CTSR register set.
bit in the CTSR register set.
CRFR0 register incremented.
register set.
CRFR0 register set.
CRFR1 register incremented.
register set.
CRFR1 register set.
– The error and status change interrupt can be
10.10.7 Register Access Protection
Erroneous access to certain configuration regis-
ters can cause the hardware to temporarily disturb
the whole CAN network. Therefore the following
registers can be modified by software only while
the hardware is in initialization mode:
CBTR0, CBTR1, CFCR0, CFCR1, CFMR and
CDGR registers.
Although the transmission of incorrect data will not
cause problems at the CAN network level, it can
severely disturb the application. A transmit mail-
box can be only modified by software while it is in
empty state, refer to
States
The filters must be deactivated before their value
can be modified by software. The modification of
the filter configuration (scale or mode) can be
done by software only in initialization mode.
generated by the following events:
– Error condition, for more details on error con-
– Wake-up condition, SOF monitored on the
ditions please refer to the CAN Error Status
register (CESR).
CAN Rx signal.
Figure 147.Transmit Mailbox