ST72321AR6-Auto STMicroelectronics, ST72321AR6-Auto Datasheet - Page 146

• Manufacturer Part Number: ST72321AR6-Auto
• Description: 8-bit MCU for automotive with 32 Kbyte Flash, 10-bit ADC, timers, SPI, SCI and I2C interfaces
• Manufacturer: STMicroelectronics

Specifications of ST72321AR6-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

Serial communications interface (SCI)
Figure 65. Bit sampling in reception mode
15.5
15.6
146/243
RDI LINE
Sample
clock
Low power modes
Table 71.
Interrupts
The SCI interrupt events are connected to the same interrupt vector.
These events generate an interrupt if the corresponding Enable Control Bit is set and the
interrupt mask in the CC register is reset (RIM instruction).
Table 72.
Transmit Data Register Empty
Transmission Complete
Received Data Ready to be Read
Overrun Error Detected
Mode
Wait
Halt
1
Interrupt event
2
No effect on SCI.
SCI interrupts cause the device to exit from Wait mode.
SCI registers are frozen.
In Halt mode, the SCI stops transmitting/receiving until Halt mode is exited.
Effect of low power modes on SCI
SCI interrupt control/wake-up capability
3
7/16
4
5
Doc ID 13829 Rev 1
6
One bit time
Event flag
RDRF
TDRE
7
OR
TC
sampled values
8
9
Enable control
Effect
10
TCIE
RIE
TIE
bit
11
12
Exit from
6/16
7/16
13
Wait
Yes
Yes
Yes
Yes
14
ST72321xx-Auto
15
Exit from
16
Halt
No
No
No
No