ST72324BK2 STMicroelectronics, ST72324BK2 Datasheet - Page 71

• Manufacturer Part Number: ST72324BK2
• Description: 5V RANGE 8-BIT MCU WITH 8 TO 32K FLASH/ROM, 10-BIT ADC, 4 TIMERS, SPI, SCI INTERFACE
• Manufacturer: STMicroelectronics

Specifications of ST72324BK2

• 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

ST72324Bxx
10.2.5
10.2.6
10.2.7
Low power modes
Table 37.
Interrupts
The MCC/RTC interrupt event generates an interrupt if the OIE bit of the MCCSR register is
set and the interrupt mask in the CC register is not active (RIM instruction).
Table 38.
1. The MCC/RTC interrupt wakes up the MCU from Active-halt mode, not from Halt mode.
MCC registers
MCC control/status register (MCCSR)
Table 39.
Time base overflow event
MCCSR
Bit
)
7
MCO
R/W
Active-halt
Interrupt event
7
Mode
Name
Wait
Halt
MCO
Effect of low power modes on MCC/RTC
MCC/RTC interrupt control/wakeup capability
MCCSR register description
Main Clock Out selection
This bit enables the MCO alternate function on the PF0 I/O port. It is set and
cleared by software.
0: MCO alternate function disabled (I/O pin free for general-purpose I/O).
1: MCO alternate function enabled (f
Note: To reduce power consumption, the MCO function is not active in Active-halt
mode.
6
No effect on MCC/RTC peripheral. MCC/RTC interrupt causes the device to exit
from Wait mode.
No effect on MCC/RTC counter (OIE bit is set), the registers are frozen.
MCC/RTC interrupt causes the device to exit from Active-halt mode.
MCC/RTC counter and registers are frozen. MCC/RTC operation resumes when
the MCU is woken up by an interrupt with Exit from Halt capability.
CP[1:0]
R/W
Event flag
5
OIF
SMS
R/W
4
Enable control bit Exit from Wait
Function
OIE
Description
CPU
3
on I/O port).
TB[1:0]
R/W
2
Reset value: 0000 0000 (00h)
Yes
On-chip peripherals
R/W
OIE
1
Exit from Halt
No
R/W
(1)
OIF
0
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