st2032a Sitronix Technology Corporation, st2032a Datasheet - Page 23

• Manufacturer Part Number: st2032a
• Description: 8 Bit Microcontroller With 32k Bytes Rom
• Manufacturer: Sitronix Technology Corporation

12.4 Timer 1
The Timer1 is an 8-bit up counter. It used as timer/counter as program specified. The difference between base timer is that Timer1
will halt during CPU SBY, but base timer will not. It is shown in FIGURE 12-4.
Ver 2.4
Address Name
$027
Bit 7-0:
PRES
PREW
T1C
T1C[7-0] : Timer1 up counter register
T1M[1~0]
T1M[2~0]
TCLK/65536
TCLK/32768
R/W
R/W
TCLK/2048
TCLK/8192
TCLK/256
TCLK/32
OSCX/256
OSCX/128
OSCX/64
OSCX/32
TCLK/2
TCLK/8
T1C[7]
T1M[4]: Control automatic reload operation
SENA : Prescaler enable bit
Bit 7
T1M[3]
0
0
0
0
0
0
0
0
1
1
1
1
IN0
IN1
IN2
IN3
IN4
IN5
IN6
IN7
IN0
IN1
IN2
IN3
0: No auto reload
1: auto reload
0 : TCLK stop
1 : TCLK counting
MUX 8-1
MUX4-1
T1C[6]
Bit 6
T1M[2]
SEL
SEL
0
0
0
0
1
1
1
1
0
0
0
0
TABLE 12-7 Clock Sources Of Timer1
TABLE 12-6 Timer1 Register (T1C)
OUT
OUT
FIGURE 12-4 Timer1 Structure
T1C[5]
T1M[1]
Bit 5
0
0
1
1
0
0
1
1
0
0
1
1
T1M[0]
23/54
T1C[4]
T1M[3]
Bit 4
0
1
0
1
0
1
0
1
0
1
0
1
IN0
IN1
T1M[4]
T1C[3]
Bit 3
MUX
SEL
T1 Timer Clock Source
OUT
TCLK/65536
TCLK/32768
TCLK/8192
TCLK/2048
OSCX/256
OSCX/128
TCLK/256
OSCX/64
OSCX/32
TCLK/32
T1C[2]
TCLK/8
TCLK/2
Bit 2
SYSCK
Auto Reload
8 Bit - UP Counter
T1C[1]
Bit 1
CLOCK
D
D Flip-Flop
CK
T1C[0]
Bit 0
Q
0000 0000
IRT1
Default
ST2032A
9/13/07