參數(shù)資料
型號(hào): ST72T2311R6T3S
廠商: 意法半導(dǎo)體
英文描述: 8-BIT MCU WITH NESTED INTERRUPTS, EEPROM, ADC, 16-BIT TIMERS, 8-BIT PWM ART, SPI, SCI, CAN INTERFACES
中文描述: 8位嵌套中斷,EEPROM存儲(chǔ)器,模數(shù)轉(zhuǎn)換器,16位定時(shí)器,8位PWM藝術(shù),SPI和脊髓損傷,微控制器的CAN接口
文件頁數(shù): 114/164頁
文件大小: 1043K
代理商: ST72T2311R6T3S
ST72311R, ST72511R, ST72512R, ST72532R
53/164
MAIN CLOCK CONTROLLER WITH REAL TIME CLOCK TIMER (Cont’d)
10.2.4 Register Description
MISCELLANEOUS REGISTER 1 (MISCR1)
See “MISCELLANEOUS REGISTERS” Section.
MAIN CLOCK CONTROL/STATUS REGISTER
(MCCSR)
Read/Write
Reset Value: 0000 0001 (01h)
Bit 7:4 = Reserved, always read as 0.
Bit 3:2 = TB[1:0]
Time base control
These bits select the programmable divider time
base. They are set and cleared by software.
A modification of the time base is taken into ac-
count at the end of the current period (previously
set) to avoid an unwanted time shift. This allows to
use this time base as a real time clock.
Bit 1 = OIE
Oscillator interrupt enable
This bit set and cleared by software.
0: Oscillator interrupt disabled
1: Oscillator interrupt enabled
This interrupt can be used to exit from ACTIVE-
HALT mode.
When this bit is set, calling the ST7 software HALT
instruction enters the ACTIVE-HALT power saving
mode.
Bit 0 = OIF
Oscillator interrupt flag
This bit is set by hardware and cleared by software
reading the CSR register. It indicates when set
that the main oscillator has reached the selected
elapsed time (TB1:0).
0: Timeout not reached
1: Timeout reached
CAUTION: The BRES and BSET instructions
must not be used on the MCCSR register to avoid
unintentionally clearing the OIF bit.
10.2.5 Low Power Modes
10.2.6 Interrupts
The MCC/RTC interrupt event generates an inter-
rupt if the OIE bit of the MCCSR register is set and
the interrupt mask in the CC register is not active
(RIM instruction).
Note:
1. The MCC/RTC interrupt allows to exit from AC-
TIVE-HALT mode, not from HALT mode.
Table 16. MCC/RTC Register Map and Reset Values
70
0000
TB1
TB0
OIE
OIF
Counter
Prescaler
Time Base
TB1
TB0
fOSC =8MHz fOSC=16MHz
32000
4ms
2ms
0
64000
8ms
4ms
0
1
160000
20ms
10ms
1
0
400000
50ms
25ms
1
Mode
Descriptio n
WAIT
No effect on MCC/RTC peripheral.
MCC/RTC interrupt cause the device to exit
from WAIT mode.
ACTIVE-
HALT
No effect on MCC/RTC counter (OIE bit is
set), the registers are frozen.
MCC/RTC interrupt cause the device to exit
from ACTIVE-HALT mode.
HALT
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.
Interrupt Event
Event
Flag
Enable
Control
Bit
Exit
from
Wait
Exit
from
Halt
Time base overflow
event
OIF
OIE
Yes
No 1)
Address
(Hex.)
Register
Label
765
4
321
0
0029h
MCCSR
Reset Value
0
TB1
0
TB0
0
OIE
0
OIF
1
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