ST72324BJ6 STMicroelectronics, ST72324BJ6 Datasheet - Page 120

• Manufacturer Part Number: ST72324BJ6
• Description: 5V RANGE 8-BIT MCU WITH 8 TO 32K FLASH/ROM, 10-BIT ADC, 4 TIMERS, SPI, SCI INTERFACE
• Manufacturer: STMicroelectronics

Specifications of ST72324BJ6

• Hdflash Endurance: 1 kcycle at 55 °C, data retention 40 years at 85 °C
• Clock Sources: crystal/ceramic resonator oscillators, int. RC osc. and ext. clock input
• 4 Power Saving Modes: Slow, Wait, Active-halt, and Halt

On-chip peripherals
10.5.5
10.5.6
10.5.7
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Low power modes
Table 60.
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 61.
SCI registers
SCI status register (SCISR)
Table 62.
Transmit data register empty
Transmission complete
Received data ready to be read
Overrun error detected
Idle line detected
Parity error
SCISR
Bit Name
Mode
Wait
7
Halt
TDRE
RO
7
TDRE
Interrupt event
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/wakeup capability
SCISR register description
Transmit Data Register Empty
This bit is set by hardware when the content of the TDR register has been transferred
into the shift register. An interrupt is generated if the TIE bit = 1 in the SCICR2
register. It is cleared by a software sequence (an access to the SCISR register
followed by a write to the SCIDR register).
0: Data is not transferred to the shift register.
1: Data is transferred to the shift register.
Note: Data will not be transferred to the shift register unless the TDRE bit is cleared.
RO
TC
6
RDRF
RO
5
Event flag Enable control bit Exit from Wait
RDRF
TDRE
IDLE
OR
TC
PE
IDLE
RO
4
Description
Function
TCIE
ILIE
RIE
PIE
TIE
OR
RO
3
RO
NF
2
Reset value: 1100 0000 (C0h)
Yes
Yes
Yes
Yes
Yes
Yes
RO
FE
1
Exit from Halt
ST72324Bxx
No
No
No
No
No
No
RO
PE
0