C509-L_97 SIEMENS [Siemens Semiconductor Group], C509-L_97 Datasheet - Page 101

• Manufacturer Part Number: C509-L_97
• Description: 8-Bit CMOS Microcontroller
• Manufacturer: SIEMENS [Siemens Semiconductor Group]

The 4 registers TL0, TH0, TL1, and TH1 are the count/reload registers of the timer 0 and 1:
Special Function Registers TL0/TH0 (Addresses 8A H /8C H )
Special Function Registers TL1/TH1 (Addresses 8B H /8D H )
Bit
TL0.7 - 0
TH0.7 - 0
TL1.7 - 0
TH1.7 - 0
In the following sections the symbols TH0 and TL0 are used to specify the high-byte and low-byte
of timer 0 (TH1 and TL1 for timer 1, respectively). The operating modes are described and shown
for timer 0. If not explicitly noted, the operating modes are also valid for timer 1.
Semiconductor Group
8A H
8C H
8B H
8D H
Bit No. MSB
.7
.7
.7
.7
7
Function
Timer 0 low byte
The TL0 is the 8-bit low byte count register of timer 0.
Timer 0 high byte
The TH0 is the 8-bit high byte count/reload register of timer 0.
Timer 1 low byte
The TL1 is the 8-bit low byte count register of timer 1.
Timer 1 high byte
The TH1 is the 8-bit high byte count/reload register of timer 1.
.6
.6
.6
.6
6
.5
.5
.5
.5
5
.4
.4
.4
.4
4
6-23
.3
.3
.3
.3
3
On-Chip Peripheral Components
.2
.2
.2
.2
2
.1
.1
.1
.1
1
LSB
.0
.0
.0
.0
0
Reset Value : 00 H
Reset Value : 00 H
TL0
TH0
TL1
TH1
1997-10-01
C509-L