ST72521R9-Auto STMicroelectronics, ST72521R9-Auto Datasheet - Page 166

• 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

I2C bus interface (I2C)
16.5
16.6
Note:
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Low power modes
Table 81.
Interrupts
Figure 69. Interrupt control logic diagram
Table 82.
The I
They generate an interrupt if the corresponding Enable Control bit is set and the I-bit in the
CC register is reset (RIM instruction).
10-bit Address Sent Event (Master mode)
End of Byte Transfer Event
Address Matched Event (Slave mode)
Start Bit Generation Event (Master mode)
Acknowledge Failure Event
Stop Detection Event (Slave mode)
Arbitration Lost Event (Multimaster configuration)
Bus Error Event
* EVF can also be set by EV6 or an error from the SR2 register.
Mode
Wait
Halt
2
STOPF
C interrupt events are connected to the same interrupt vector (see
ADD10
BERR
ARLO
*
ADSL
BTF
SB
AF
No effect on I
I
I
In Halt mode, the I
I
Halt mode” capability.
2
2
2
C interrupts cause the device to exit from Wait mode.
C registers are frozen.
C interface resumes operation when the MCU is woken up by an interrupt with “exit from
Effect of low power modes on I
I
2
C interrupt control/wake-up capability
Interrupt event
2
C interface.
2
C interface is inactive and does not acknowledge data on the bus. The
Doc ID 17660 Rev 1
ITE
2
Event flag
C
Effect
ADSEL
STOPF
ADD10
BERR
ARLO
BTF
SB
AF
control bit
Enable
ITE
Exit from
Interrupts
Wait
Yes
ST72521xx-Auto
INTERRUPT
Exit from
chapter).
EVF
Halt
No