參數(shù)資料
型號(hào): HMS81C2020AQ
廠商: Electronic Theatre Controls, Inc.
英文描述: CMOS Single-Chip 8-Bit Microcontroller with A/D Converter & VFD Driver
中文描述: CMOS單芯片8位微控制器與A / D轉(zhuǎn)換器
文件頁(yè)數(shù): 59/107頁(yè)
文件大小: 1482K
代理商: HMS81C2020AQ
HMS81C2012A/2020A
SEP. 2004 Ver 2.00
55
12.5 16-bit Capture Mode
16-bit capture mode is the same as 8-bit capture, except
that the Timer register is being run will 16 bits.
The clock source of the Timer 0 is selected either internal
or external clock by bit T0CK2, T0CK1 and T0CK0.
In 16-bit mode, the bits T1CK1,T1CK0 and 16BIT of TM1
should be set to "1" respectively.
Figure 12-11 16-bit Capture Mode
0: Stop
1: Clear and start
T0ST
T0CN
Capture
CDR1 + CDR0
(16-bit)
Higher byte Lower byte
CAPTURE DATA
TDR1 + TDR0
(16-bit)
INT0IF
INT0
INTERRUPT
“01”
“10”
“11”
IEDS[1:0]
EC0 PIN
÷
2
÷
4
÷
8
÷
32
÷
128
÷
512
XIN PIN
MUX
P
T0CK[2:0]
111
000
001
010
011
÷
2048
100
101
110
INT0 PIN
BTCL
T0CK1
7
6
5
4
3
2
1
0
-
-
T0CN
INITIAL VALUE: --000000
B
ADDRESS: 0D0
H
TM0
T0ST
T0CK0
CAP0 T0CK2
-
-
X
X
X
X
X means don’t care
INITIAL VALUE: 00
H
ADDRESS: 0D2
H
TM1
X means don’t care
1
X
BTCL
T1CK1
7
6
5
4
3
2
1
0
16BIT
POL
T1CN T1ST
T1CK0
PWM1E
CAP1
X
1
X
X
1
1
0
X
Edge
Detector
clear
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