st2024c Sitronix Technology Corporation, st2024c Datasheet - Page 26

• Manufacturer Part Number: st2024c
• Description: 24k 8-bit Single Chip Microcontroller
• Manufacturer: Sitronix Technology Corporation

12.5 Timer 1
The Timer1 is an 8-bit up counter. It can be used as a timer
or an event counter. T1C($27) is a real time read/write
counter. When an overflow from $FF to $00, a timer interrupt
request IRT1 will be generated. Timer1 will stop counting
when system clock stops. Please refer to Figure 11-8.
Ver 2.2
12.5.1.2
Address Name
$027
Bit 7-0:
PREW
PRES
T1C
T1C[7-0] : Timer1 up counter register
T1M[1~0]
T1M[1~0]
OSCX/256
OSCX/128
OSCX/64
OSCX/32
TCLK/256
TCLK/32
TCLK/8
TCLK/2
R/W
R/W
TABLE 12-23: TIMER1 COUNTING REGISTER (T1C)
T1C[7]
Bit 7
IN0
IN1
IN2
IN3
IN0
IN1
IN2
IN3
MUX 4-1
MUX4-1
FIGURE 12-8: Timer1 Structure Diagram
SEL
SEL
T1C[6]
Bit 6
OUT
OUT
T1C[5]
Bit 5
T1M[3]
26/54
T1C[4]
Bit 4
IN0
IN1
T1M[4]
MUX
SEL
T1C[3]
MUX
Bit 3
OUT
SYSCK
T1C[2]
Bit 2
8 Bit - UP Counter
Auto Reload
CLOCK
T1C[1]
D
Bit 1
D Flip-Flop
CK
T1C[0]
Bit 0
Q
IRT1
0000 0000
ST2024C
Default
1/31/08