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参数资料
| 型号： | RTC-4574NBB |
| 元件分类： | 时钟/数据恢复及定时提取 |
| 英文描述： | 0 TIMER(S), REAL TIME CLOCK, PDSO22 |
| 封装： | SON-22 |
| 文件页数： | 2/14页 |
| 文件大小： | 620K |
| 代理商： | RTC-4574NBB |
RTC
4574 SA / JE / NB
Page - 7
MQ302-07 SAJENB01
9. Matters that demand special attention on use
9.1. VDD and CE timing
* When the power is turned to ON, use with CE = " L " ( VCL[V] in the diagram ) as illustrated in the following timing
chart.
VDD
1.6 V
VCL
tCL
CE1
or
CE0
Item
Symbol
Remark
Specification
Unit
CE voltage when power is
turned to ON
VCL
CE impressed voltage
until VDD = 1.6 V
0.3 (Max.)
V
CE=VCL[V] time when power
is turned to ON
tCL
Time to maintain CE=VCL[V] until
VDD = 1.6 V
10 (Min.)
s
9.2. Migrating to backup, and returning
* When migrating to backup, before switching the power source, make sure CE1 or CE0 is definitely LOW and RTC
is not selected
VDD
VCLK
CE1
or
CE0
Back Up
tCD
tF
tR
tCU
VIL
Parameter
Symbol
Condition
Min.
Typ.
Max.
Unit
CE time before power drop
tCD
0
s
(VDD
VCLK) ≤ 2.0 V
2
s / V
Power drop time
tF
(VDD
VCLK) > 2.0 V
50
s / V
Power rise time
tF
1
s / V
CE time after power rise
tCU
0
s
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| RTC-4574JEB | 0 TIMER(S), REAL TIME CLOCK, PDSO20 |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| RTC-4574SA | 制造商:Epson Toyocom Corporation 功能描述:32.768kHz 0.5uA@3ViTyp.j 10.1~5.0~3.2mm +85 -40 5}23ppm@+25/3.0V 10.1mm 5mm 3.2mm Cut Tape 制造商:Epson Toyocom 功能描述:RTC module,3Wire Serial,Alarm,SOP14 |
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