參數(shù)資料
型號(hào): UPD4991AGS
廠商: NEC Corp.
英文描述: 4-BIT PARALLEL I/O CALENDAR CLOCK
中文描述: 4位并行I / O日歷鐘
文件頁(yè)數(shù): 21/32頁(yè)
文件大小: 133K
代理商: UPD4991AGS
μ
PD4991A
21
Fig. 4 TP
1
Output Waveform (without AUTO RESET)
Without RESET of the alarm coincidence flag
2048 Hz
~
1 Hz
1 pulse
Alarm coincidence
Another alarm coincidence
Alarm coincidence
Another alarm coincidence
"H"
"L"
Alarm coincidence
Another alarm coincidence
30.5 s
Figs. 5 and 6 show examples of applications using TP
1
.
Fig. 5 TP
1
Output Status (AUTO RESET mode)
TP
1
2048 Hz
1 Hz
~
"H"
"L"
1 pulse
ALARM ENABLE
Alarm coincidence flag reset
Output status enable
Alarm coincidence
Alarm does not
coincide
Alarm coincidence
flag set
Alarm coincidence
Alarm does not
coincide
Output status
disabled
Alarm
coincidence
Alarm
coincidence
flag set
Alarm does not
coincide
Alarm
coincidence
flag ON
Alarm
coincidence
flag OFF
Alarm
coincidence
flag ON
Alarm
coincidence
flag OFF
Alarm
coincidence
flag ON
30.5 s
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