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AT83C5111 数据表(PDF) 45 Page - ATMEL Corporation

部件名 AT83C5111
功能描述  Low Pin Count 8-bit Microcontroller with A/D Converter
PDF  86 Pages
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制造商  ATMEL [ATMEL Corporation]
网页  http://www.atmel.com
标志 ATMEL - ATMEL Corporation

AT83C5111 数据表(HTML) 45 Page - ATMEL Corporation

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AT8xC5111
4190A–8051–11/02
Figure 1. PCA Timer/Counter
CIDL
CPS1
CPS0
ECF
It
CH
CL
16-bit Up/Down Counter
To PCA
Modules
Fosc /12
Fosc/4
T0 OVF
P1.2
Idle
CMOD
0xD9
WDTE
CF
CR
CCON
0xD8
CCF4 CCF3
CCF2
CCF1
CCF0
overflow
Table 1. CMOD: PCA Counter Mode Register - CMOD Address 0D9H
7654
3210
CIDL
WDTE
-
-
-
CPS1
CPS0
ECF
Bit
Number
Bit
Mnemonic
Description
7CIDL
Counter Idle control:
CIDL = 0 programs the PCA Counter to continue functioning during idle Mode.
CIDL = 1 programs it to be gated off during idle.
6WDTE
Watchdog Timer Enable:
WDTE = 0 disables Watchdog Timer function on PCA Module 4. WDTE = 1
enables it.
5
-
Not implemented, reserved for future use.
(1)
1.
User software should not write 1s to reserved bits. These bits may be used in future 8051
family products to invoke new features. In that case, the reset or inactive value of the
new bit will be 0, and its active value will be 1.The value read from a reserved bit is
indeterminate.
4
-
Not implemented, reserved for future use.
3
-
Not implemented, reserved for future use.
2CPS1
CPS1
CPS0
Selected PCA input
(2)
0
0
Internal clock fosc/12 ( Or fosc/6 in X2 Mode).
0
1
Internal clock fosc/4 ( Or fosc/2 in X2 Mode).
1
0
Timer 0 Overflow
1
1
External clock at ECI/P1.2 pin (max rate = fosc/ 8)
2.
f
osc = oscillator frequency
1
CPS0
PCA Count Pulse Select bit 0.
0ECF
PCA Enable Counter Overflow interrupt: ECF = 1 enables CF bit in CCON to
generate an interrupt. ECF = 0 disables that function of CF.
Reset value = 00XXX00



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