C501_1 Datasheet, PDF (57/121 Pages) Siemens Semiconductor Group – 8-Bit Single-Chip Microcontroller

On-Chip Peripheral Components
C501
6.2.2.1 Timer 2 Registers
Totally six special function registers control the timer/counter 2 operation :
– TL2/TH2 and RC2L/RC2H - counter and reload/capture registers, low and high part
– T2CON and T2MOD - control and mode select registers
Special Function Register TL2 (Address CCH)
Special Function Register TH2 (Address CDH)
Special Function Register RC2L (Address CAH)
Special Function Register RC2H (Address CBH)
Reset Value : 00H
Reset Value : 00H
Reset Value : 00H
Reset Value : 00H
Bit No. MSB
LSB
7
6
5
4
3
2
1
0
CCH .7
.6
.5
.4
.3
.2
.1 LSB TL2
CDH MSB .6
.5
.4
.3
.2
.1
.0 TH2
CAH
.7
.6
.5
.4
.3
.2
.1 LSB RC2L
CBH MSB .6
.5
.4
.3
.2
.1
.0 RC2H
Bit
TL2.7-0
TH2.7-0
RC2L.7-0
RC2H.7-0
Function
Timer 2 value low byte
The TL2 register holds the 8-bit low part of the 16-bit timer 2 count value.
Timer 2 value high byte
The TH2 register holds the 8-bit high part of the 16-bit timer 2 count value.
Reload register low byte
CRCL is the 8-bit low byte of the 16-bit reload register of timer 2.
Reload register high byte
CRCH is the 8-bit high byte of the 16-bit reload register of timer 2.
Semiconductor Group
6-23