参数资料
型号: ST72141K2B3/XXX
厂商: STMICROELECTRONICS
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDIP32
封装: 0.400 INCH, PLASTIC, SDIP-32
文件页数: 51/133页
文件大小: 2615K
代理商: ST72141K2B3/XXX
Obsolete
Product(s)
- Obsolete
Product(s)
ST72141K2
24/133
3.4 MAIN CLOCK CONTROLLER (MCC)
The MCC block supplies the clock for the ST7
CPU and its internal peripherals. It allows the
SLOW power saving mode and the Motor Contral
and SPI peripheral clocks to be managed inde-
pendently. The MCC functionality is controlled by
two bits of the MISCR register: SMS and XT16.
The XT16 bit acts on the clock of the motor control
and SPI peripherals while the SMS bit acts on the
CPU and the other peripherals.
Figure 17. Main Clock Controller (MCC) Block Diagram
DIV 2
SMS
-
CPU CLOCK
MISCR
TO CPU AND
PERIPHERALS
fOSC
fCPU
OSC2
OSC1
-
XT16
OSCILLATOR
MCC
DIV 16
4MHz
MOTOR CONTROL
PERIPHERAL
DIV 2
4MHz
SPI
PERIPHERAL
DIV 2
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