C505_9708 SIEMENS [Siemens Semiconductor Group], C505_9708 Datasheet - Page 78

• Manufacturer Part Number: C505_9708
• Description: 8-Bit CMOS Microcontroller
• Manufacturer: SIEMENS [Siemens Semiconductor Group]

6.2.1.1
Totally six special function registers control the timer/counter 0 and 1 operation :
Special Function Register TL0 (Address 8A H )
Special Function Register TH0 (Address 8C H )
Special Function Register TL1 (Address 8B H )
Special Function Register TH1 (Address 8D H )
Bit
TLx.7-0
x=0-1
THx.7-0
x=0-1
Semiconductor Group
– TL0/TH0 and TL1/TH1 - counter registers, low and high part
– TCON and TMOD - control and mode select registers
Bit No.
8B H
8A H
8D H
8C H
Timer/Counter 0 and 1 Registers
Function
Timer/counter 0/1 low register
Timer/counter 0/1 high register
Operating Mode Description
0
1
2
3
Operating Mode Description
0
1
2
3
MSB
7
.7
.7
.7
.7
6
.6
.6
.6
.6
"TLx" holds the 5-bit prescaler value.
"TLx" holds the lower 8-bit part of the 16-bit timer/counter value.
"TLx" holds the 8-bit timer/counter value.
TL0 holds the 8-bit timer/counter value; TL1 is not used.
"THx" holds the 8-bit timer/counter value.
"THx" holds the higher 8-bit part of the 16-bit timer/counter value
"THx" holds the 8-bit reload value.
TH0 holds the 8-bit timer value; TH1 is not used.
5
.5
.5
.5
.5
4
.4
.4
.4
.4
6-16
.3
.3
3
.3
.3
On-Chip Peripheral Components
2
.2
.2
.2
.2
1
.1
.1
.1
.1
LSB
Reset Value : 00 H
Reset Value : 00 H
Reset Value : 00 H
Reset Value : 00 H
.0
0
.0
.0
.0
C505 / C505C
TL0
TL1
TH0
TH1
1997-08-01