C509-L_97 SIEMENS [Siemens Semiconductor Group], C509-L_97 Datasheet - Page 111

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

6.3.1
Timer 2 is one of the three 16-bit timer units of the capture/compare unit. It can operate as timer,
event counter, or gated timer. Prior to the description of the timer 2 operating modes and functions,
the timer 2 related special function registers are described.
6.3.1.1
Timer 2 is controlled by bits of the 5 special function register T2CON, PRSC, CTCON, IEN1, and
IRCON0. The related meaning of the timer 2 control bits and flags is shown below.
Special Function Register T2CON (Address C8 H )
Special Function Register PRSC
Special Function Register CTCON (Address E1 H )
Special Function Register IEN0
Special Function Register IEN1
Special Function Register IRCON0 (Address C0 H )
Semiconductor Group
Bit No.
C8 H
C0 H
A8 H
B4 H
E1 H
B8 H
Timer 2 Operation
Timer 2 Registers
The shaded bits are not used for timer/counter 2.
EXEN2 SWDT
WDTP
T2PS1
T2PS
EXF2
MSB
EAL
AF
CF
C7
BF
7
7
H
H
H
H
WDT
I3FR
CTP
S0P
TF2
CE
AE
C6
BE
6
6
H
H
H
H
T2P1
I2FR
IEX6
ET2
ICR
EX6
AD
CD
C5
BD
5
5
H
H
H
H
(Address B4 H )
(Address A8 H )
(Address B8 H )
T2R1
T2P0
IEX5
ES0
EX5
ICS
AC
CC
C4
BC
4
4
H
H
H
H
6-33
T2R0
T1P1
IEX4
CTF
ET1
EX4
AB
CB
C3
BB
3
3
H
H
H
H
On-Chip Peripheral Components
T2CM
T1P0
CLK2
IEX3
EX1
EX3
CA
AA
C2
BA
2
2
H
H
H
H
CLK1
T0P1
IEX2
T2I1
ET0
EX2
A9
C9
C1
B9
1
1
H
H
H
H
Reset Value : 00 H
Reset Value : 11010101 B
Reset Value : 01000000 B
Reset Value : 00 H
Reset Value : 00 H
Reset Value : 00 H
EADC
CLK0
T0P0
IADC
LSB
T1I0
EX0
C8
A8
C0
B8
0
0
H
H
H
H
IEN0
IRCON0
T2CON
PRSC
CTCON
IEN1
1997-10-01
C509-L