參數(shù)資料
型號(hào)： ST72254G1B1
英文描述： 8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY. ADC. 16-BIT TIMERS. SPI.
中文描述： 8位單電壓閃存微控制器。 ADC的。 16位定時(shí)器。的SPI。
文件頁數(shù)： 72/140頁
文件大?。?/td> 1349K
代理商： ST72254G1B1
ST72104G, ST72215G, ST72216G, ST72254G
37/140
MISCELLANEOUS REGISTERS (Cont’d)
11.3 MISCELLANEOUS REGISTER DESCRIPTION
MISCELLANEOUS REGISTER 1 (MISCR1)
Read /Write
Reset Value: 0000 0000 (00h)
Bit 7:6 = IS1[1:0]
ei1 sensitivity
The interrupt sensitivity, defined using the IS1[1:0]
bits, is applied to the ei1 external interrupts. These
two bits can be written only when the I bit of the CC
register is set to 1 (interrupt masked).
ei1: Port B (C optional)
Bit 5 = MCO
Main clock out selection
This bit enables the MCO alternate function on the
PC2 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 (fCPU on I/O
port)
Bit 4:3 = IS0[1:0]
ei0 sensitivity
The interrupt sensitivity, defined using the IS0[1:0]
bits, is applied to the ei0 external interrupts. These
two bits can be written only when the I bit of the CC
register is set to 1 (interrupt masked).
ei0: Port A (C optional)
Bit 2:1 = CP[1:0]
CPU clock prescaler
These bits select the CPU clock prescaler which is
applied in the different slow modes. Their action is
conditioned by the setting of the SMS bit. These
two bits are set and cleared by software
Bit 0 = SMS
Slow mode select
This bit is set and cleared by software.
0: Normal mode. fCPU = fOSC / 2
1: Slow mode. fCPU is given by CP1, CP0
See low power consumption mode and MCC
chapters for more details.
70
IS11
IS10
MCO
IS01
IS00
CP1
CP0
SMS
External Interrupt Sensitivity
IS11 IS10
Falling edge & low level
0
Rising edge only
0
1
Falling edge only
1
0
Rising and falling edge
1
External Interrupt Sensitivity
IS01 IS00
Falling edge & low level
0
Rising edge only
0
1
Falling edge only
1
0
Rising and falling edge
1
fCPU in SLOW mode
CP1
CP0
fOSC / 4
0
fOSC / 8
1
0
fOSC / 16
0
1
fOSC / 32
1
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ST72254G1B1/XXX 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, ADC, 16-BIT TIMERS, SPI, IC INTERFACES
ST72254G1B3 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY. ADC. 16-BIT TIMERS. SPI.
ST72254G1B3/XXX 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, ADC, 16-BIT TIMERS, SPI, IC INTERFACES
ST72254G1B5 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY. ADC. 16-BIT TIMERS. SPI.
ST72254G1B5/XXX 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, ADC, 16-BIT TIMERS, SPI, IC INTERFACES
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