參數(shù)資料
型號： S1C88816D
元件分類： 微控制器/微處理器
英文描述： 8-BIT, MROM, 8.2 MHz, MICROCONTROLLER, UUC164
封裝： DIE-164
文件頁數(shù)： 153/173頁
文件大?。?/td> 1411K
代理商： S1C88816D
72
EPSON
S1C88816 TECHNICAL MANUAL
5 PERIPHERAL CIRCUITS AND THEIR OPERATION (Stopwatch Timer)
5.9 Stopwatch Timer
5.9.1 Configuration of stopwatch timer
The S1C88816 has a built-in 1/100 sec and 1/10 sec
stopwatch timer. The stopwatch timer is composed
of a 4-bit 2 stage BCD counter (1/100 sec units and
1/10 sec units) that makes the 256 Hz signal that
divides the fOSC1 the input clock and it can read the
count data by software.
Figure 5.9.1.1 shows the configuration of the
stopwatch timer.
The stopwatch timer can be used as a timer differ-
ent from the clock timer and can easily realize
stopwatch and other such functions by software.
Figure 5.9.2.1 shows the count up pattern of the
stopwatch timer.
The feedback dividing circuit generates an approxi-
mate 100 Hz signal at 2/256 sec and 3/256 sec
intervals from a 256 Hz signal divided from fOSC1.
The 1/100 sec counter (SWD0–SWD3) generates an
approximate 10 Hz signal at 25/256 sec and 26/256
sec intervals by counting the approximate 100 Hz
signal generated by the feedback dividing circuit in
2/256 sec and 3/256 sec intervals. The count-up is
made approximately 1/100 sec counting by the 2/
256 sec and 3/256 sec intervals.
The 1/10 sec counter (SWD4–SWD7) generates a 1
Hz signal by counting the approximate 10 Hz
signal generated by the 1/100 sec counter at 25/256
sec and 26/256 sec intervals in 4:6 ratios.
The count-up is made approximately 1/10 sec
counting by 25/256 sec and 26/256 sec intervals.
5.9.2 Count up pattern
The stopwatch timer is respectively composed of the
4-bit BCD counters SWD0–SWD3 and SWD4–SWD7.
Data bus
Interrupt
request
Divider
256 Hz
Stopwatch timer reset
SWRUN
Stopwatch timer
SWD0–SWD7
1 Hz
SWRST
OSC1
oscillation
circuit
fOSC1
Stopwatch timer Run/Stop
Approximate 100 Hz
Approximate 10 Hz
Feedback
deviding circuit
Interrupt
control
circuit
1/100 sec
4-bit BCD counter
1/10 sec
4-bit BCD counter
Fig. 5.9.1.1
Configuration of
stopwatch timer
1/10 sec counter count-up pattern
26
256
0
26
256
1
25
256
2
25
256
3
26
256
4
26
256
5
25
256
6
25
256
7
26
256
8
26
256
90
Count value
Count clock
(Approximate 10 Hz signal)
Count time
(sec)
3
256
0
2
256
1
3
256
2
2
256
3
3
256
4
2
256
5
3
256
6
2
256
7
3
256
8
2
256
90
Count value
Count clock
(256 Hz)
Count time
(sec)
3
256
0
3
256
1
3
256
2
2
256
3
3
256
4
2
256
5
3
256
6
2
256
7
3
256
8
2
256
90
Count value
Count clock
(256 Hz)
Count time
(sec)
25
256
26
256
sec
1/100 sec counter count-up pattern 1
Approximate 10 Hz signal
1/100 sec counter count-up pattern 2
Approximate 10 Hz signal
1 Hz signal
26
256
x 6 +
25
256
x 4 = 1 sec
Fig. 5.9.2.1
Count-up pattern of stopwatch timer
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
S1C88848 制造商:EPSON 制造商全稱:EPSON 功能描述:8-bit Single Chip Microcomputer
S1C8F360D411000 功能描述:16位微控制器 - MCU 8-bit Flash 60KB LCD Dr. 51 x 32 RoHS:否 制造商:Texas Instruments 核心:RISC 處理器系列:MSP430FR572x 數(shù)據(jù)總線寬度:16 bit 最大時鐘頻率:24 MHz 程序存儲器大小:8 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:VQFN-40 安裝風格:SMD/SMT
S1C8F360D511000 功能描述:16位微控制器 - MCU 8-bit Flash 60KB LCD Dr. 51 x 32 RoHS:否 制造商:Texas Instruments 核心:RISC 處理器系列:MSP430FR572x 數(shù)據(jù)總線寬度:16 bit 最大時鐘頻率:24 MHz 程序存儲器大小:8 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:VQFN-40 安裝風格:SMD/SMT
S1C8F360F413100 功能描述:16位微控制器 - MCU 8-bit Flash 60KB LCD Dr. 51 x 32 RoHS:否 制造商:Texas Instruments 核心:RISC 處理器系列:MSP430FR572x 數(shù)據(jù)總線寬度:16 bit 最大時鐘頻率:24 MHz 程序存儲器大小:8 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:VQFN-40 安裝風格:SMD/SMT
S1C8F360F513200 功能描述:16位微控制器 - MCU 8-bit Flash 60KB LCD Dr. 51 x 32 RoHS:否 制造商:Texas Instruments 核心:RISC 處理器系列:MSP430FR572x 數(shù)據(jù)總線寬度:16 bit 最大時鐘頻率:24 MHz 程序存儲器大小:8 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:VQFN-40 安裝風格:SMD/SMT
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