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參數(shù)資料
| 型號(hào)： | ST72124J2B7 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | 8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, ADC, 16-BIT TIMERS, SPI, SCI INTERFACES |
| 中文描述： | 8位單電壓閃存，ADC和16位定時(shí)器，SPI和脊髓損傷界面微控制器 |
| 文件頁數(shù)： | 34/125頁 |
| 文件大?。?/td> | 776K |
| 代理商： | ST72124J2B7 |
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ST72334J/N, ST72314J/N, ST72124J
34/125
4.5 MAIN CLOCK CONTROLLER (MCC)
The MCC block supplies the clock for the ST7
CPU and its internal peripherals. It allows to man-
age the power saving modes such as the SLOW
and ACTIVE-HALT modes. The whole functionali-
ty is managed by the Main Clock Control/Status
Register (MCCSR) and the Miscellaneous Regis-
ter 1 (MISCR1).
The MCC block consists of:
– a programmable CPU clock prescaler
– a time base counter with interrupt capability
– a clock-out signal to supply external devices
The prescaler allows to select the main clock fre-
quency and is controlled with three bits of the
MISCR1: CP1, CP0 and SMS.
The counter allows to generate an interrupt based
on a accurate real time clock. Four different time
bases depending directly on f
OSC
are available.
The whole functionality is controlled by four bits of
the MCCSR register: TB1, TB0, OIE and OIF.
The clock-out capability allows to configure a ded-
icated I/O port pin as an f
OSC
/2 clock out to drive
external devices. It is controlled by the MCO bit in
the MISCR1 register.
When selected, the clock out pin suspends the
clock during ACTIVE-HALT mode.
Figure 25. Main Clock Controller (MCC) Block Diagram
DIV 2, 4, 8, 16
MCC INTERRUPT
DIV 2
SMS
CP1
CP0
TB1
TB0
OIE
OIF
CPU CLOCK
TO CPU AND
PERIPHERALS
MISCR1
PROGRAMMABLE
DIVIDER
f
OSC
f
CPU
MCO
PORT
FUNCTION
ALTERNATE
OSC2
OSC1
MCO
-
-
-
-
0
0
0
0
MCCSR
OSCILLATOR
MCC
f
OSC
/2
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| ST72124J2T6 | 8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, ADC, 16-BIT TIMERS, SPI, SCI INTERFACES |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ST72124J2B7/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, SCI INTERFACES |
| ST72124J2T | 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, SCI INTERFACES |
| ST72124J2T1 | 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, SCI INTERFACES |
| ST72124J2T1/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, SCI INTERFACES |
| ST72124J2T3 | 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, SCI INTERFACES |
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