參數(shù)資料
型號: ST2202
廠商: Electronic Theatre Controls, Inc.
英文描述: 8 BIT Integrated Microcontroller with 256K Bytes ROM
中文描述: 8位微控制器集成256K字節(jié)ROM的
文件頁數(shù): 29/65頁
文件大?。?/td> 1946K
代理商: ST2202
Sitronix
12.4 Timer 1
ST2202
Ver 2.0a
29/65
2003-May-05
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.
IN4
IN5
IN6
IN7
SEL
PRES
T1M[2~0]
MUX4-1
PREW
IN0
IN1
IN2
IN3
SEL
T1M[1~0]
MOUT
8 Bit - UP Counter
CLOCK
IRT1
MUX 8-1
OSCX/256
OSCX/128
OSCX/64
BGRCK
TCLK/256
TCLK/32
TCLK/8
TCLK/2
OUT
OUT
IN0
IN1
SEL
D
CK
Q
D Flip-Flop
SYSCK
MUX
T1M[3]
Auto Reload
T1M[4]
IN0
IN1
IN2
IN3
TCLK/65536
TCLK/32768
TCLK/8192
TCLK/2048
FIGURE 12-4 Timer1 Structure
TABLE 12-8 Timer1 Register (T1C)
Bit 6
Bit 5
Bit 4
T1C[6]
T1C[5]
T1C[4]
Address Name
$027
Bit 7-0:
T1C[7-0] :
Timer1 up counter register
R/W
R/W
Bit 7
T1C[7]
Bit 3
T1C[3]
Bit 2
T1C[2]
Bit 1
T1C[1]
Bit 0
T1C[0]
Default
0000 0000
T1C
TABLE 12-9 Clock Sources Of Timer1
T1M[2]
T1M[1]
T1M[0]
0
0
0
0
0
1
0
1
0
0
1
1
1
0
0
1
0
1
1
1
0
1
1
1
0
0
0
0
0
1
0
1
0
0
1
1
T1M[3]
0
0
0
0
0
0
0
0
1
1
1
1
T1 Timer Clock Source
TCLK/65536
TCLK/32768
TCLK/8192
TCLK/2048
TCLK/256
TCLK/32
TCLK/8
TCLK/2
OSCX/256
OSCX/128
OSCX/64
BGRCK
T1M[4]: Control automatic reload operation
0: No auto reload
1: auto reload
SENA : Prescaler enable bit
0 : TCLK stop
1 : TCLK counting
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