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AT89C51ED2-RDTIM 数据表(PDF) 37 Page - ATMEL Corporation

部件名 AT89C51ED2-RDTIM
功能描述  8-bit Flash Microcontroller
PDF  137 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  ATMEL [ATMEL Corporation]
网页  http://www.atmel.com
标志 ATMEL - ATMEL Corporation

AT89C51ED2-RDTIM 数据表(HTML) 37 Page - ATMEL Corporation

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37
AT89C51RD2/ED2
4235E–8051–04/04
The CMOD register includes three additional bits associated with the PCA (See
Figure 16 and Table 22).
•
The CIDL bit which allows the PCA to stop during idle mode.
•
The WDTE bit which enables or disables the watchdog function on module 4.
•
The ECF bit which when set causes an interrupt and the PCA overflow flag CF (in
the CCON SFR) to be set when the PCA timer overflows.
Figure 16. PCA Timer/Counter
CIDL
CPS1
CPS0
ECF
IT
CH
CL
16 Bit Up Counter
To PCA
Modules
F
CLK PERIPH/6
F
CLK PERIPH/2
T0 OVF
P1.2
Idle
CMOD
0xD9
WDTE
CF
CR
CCON
0xD8
CCF4 CCF3
CCF2
CCF1
CCF0
Overflow



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