参数资料
型号: ST72C215G2M7
厂商: STMICROELECTRONICS
元件分类: 微控制器/微处理器
英文描述: 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PDSO28
封装: 0.300 INCH, PLASTIC, SOIC-28
文件页数: 58/140页
文件大小: 2246K
代理商: ST72C215G2M7
ST72104G, ST72215G, ST72216G, ST72254G
24/140
6.6 MAIN CLOCK CONTROLLER (MCC)
The Main Clock Controller (MCC) supplies the
clock for the ST7 CPU and its internal peripherals.
It allows SLOW power saving mode to be man-
aged by the application.
All functions are managed by the Miscellaneous
register 1 (MISCR1).
The MCC block consists of:
A programmable CPU clock prescaler
A clock-out signal to supply external devices
The prescaler allows the selection of the main
clock frequency and is controlled by three bits of
the MISCR1: CP1, CP0 and SMS.
The clock-out capability consists of a dedicated
I/O port pin configurable as an fCPU clock output to
drive external devices. It is controlled by the MCO
bit in the MISCR1 register.
TERS" on page 36 for more details.
Figure 14. Main Clock Controller (MCC) Block Diagram
DIV 2, 4, 8, 16
DIV 2
SMS
CP1 CP0
CPU CLOCK
MISCR1
CLOCK TO CAN
TO CPU AND
PERIPHERALS
fOSC
fCPU
MCO
PORT
FUNCTION
ALTERNATE
MCO
-
fOSC/2
PERIPHERAL
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