參數(shù)資料
型號: Q67121C452
英文描述: IC-SM-8-BIT CPU-12MHZ
中文描述: 集成電路釤8位CPU - 12MHz的
文件頁數(shù): 49/121頁
文件大?。?/td> 1000K
代理商: Q67121C452
Semiconductor Group
6-15
On-Chip Peripheral Components
C501
6.2.1.1
Timer/Counter 0 and 1 Registers
Totally six special function registers control the timer/counter 0 and 1 operation :
– TL0/TH0 and TL1/TH1 - counter registers, low and high part
– TCON and TMOD - control and mode select registers
Special Function Register TL0 (Address 8AH)
Special Function Register TH0 (Address 8CH)
Special Function Register TL1 (Address 8BH)
Special Function Register TH1 (Address 8DH)
Reset Value : 00H
Reset Value : 00H
Reset Value : 00H
Reset Value : 00H
Bit
Function
TLx.7-0
x=0-1
Timer/counter 0/1 low register
Operating Mode Description
THx.7-0
x=0-1
Timer/counter 0/1 high register
Operating Mode Description
.7
.6
.5
.4
8AH
TL0
Bit No.
7
6
5
4
3
2
1
0
MSB
LSB
.3
.2
.1
.0
.7
.6
.5
.4
8CH
TH0
.3
.2
.1
.0
.7
.6
.5
.4
8BH
TL1
.3
.2
.1
.0
.7
.6
.5
.4
8DH
TH1
.3
.2
.1
.0
0
“TLx” holds the 5-bit prescaler value.
1
“TLx” holds the lower 8-bit part of the 16-bit timer/counter value.
2
“TLx” holds the 8-bit timer/counter value.
3
TL0 holds the 8-bit timer/counter value; TL1 is not used.
0
“THx” holds the 8-bit timer/counter value.
1
“THx” holds the higher 8-bit part of the 16-bit timer/counter value
2
“THx” holds the 8-bit reload value.
3
TH0 holds the 8-bit timer value; TH1 is not used.
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