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參數(shù)資料
| 型號： | DS1644P-120 |
| 英文描述： | Nonvolatile Timekeeping RAM |
| 中文描述： | 非易失性內(nèi)存時鐘 |
| 文件頁數(shù)： | 8/13頁 |
| 文件大小： | 302K |
| 代理商： | DS1644P-120 |
DS1644/DS1644P
8 of 13
AC ELECTRICAL CHARACTERISTICS
PARAMETER
Read Cycle Time
Address Access Time
CE
Access Time
CE
Data Off Time
Output Enable Access Time
Output Enable Data Off Time
Output Enable to DQ Low-Z
CE
to DQ Low-Z
Output Hold from Address
Write Cycle Time
Address Setup Time
CE
Pulse Width
(Over the Operating Range)
TYP
MAX
120
120
40
100
40
40
SYMBOL
t
RC
t
AA
t
CEA
t
CEZ
t
OEA
t
OEZ
t
OEL
t
CEL
t
OH
t
WC
t
AS
t
CEW
t
AH1
t
AH2
t
WEW
t
WEZ
t
WR
t
DS
t
DH1
t
DH2
MIN
120
5
5
5
120
0
100
5
30
75
10
85
0
15
UNITS
NOTES
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
5
6
5
6
Address Hold from End of Write
Write Pulse Width
WE
Data Off Time
WE
or
CE
Inactive Time
Data Setup Time
Data Hold Time High
AC TEST CONDITIONS
Input Levels:
Transition Times:
CAPACITANCE
(T
A
= +25 C)
PARAMETER
SYMBOL
Capacitance on all pins (except DQ)
C
I
Capacitance on DQ pins
C
DQ
AC ELECTRICAL CHARACTERISTICS
(POWER-UP/DOWN TIMING)
PARAMETER
SYMBOL
CE
or
WE
at V
IH
before Power Down
t
PD
V
PF
(Max) to V
PF
(Min) V
CC
Fall Time
t
F
V
PF
(Min) to V
SO
V
CC
Fall Time
t
FB
V
SO
to V
PF
(Min) V
CC
Rise Time
t
RB
V
PF
(Min) to V
PF
(Max) V
CC
Rise Time
t
R
Power-Up
t
REC
Expected Data Retention Time
(Oscillator On)
0V to 3V
5 ns
MIN
TYP
MAX
7
10
UNITS NOTES
pF
pF
(Over the Operating Range)
TYP
MAX
35
MIN
0
300
10
1
0
15
10
UNITS NOTES
s
s
s
s
s
ms
years
t
DR
4
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS1644P120+ | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:Nonvolatile Timekeeping RAM |
| DS1644P-120+ | 功能描述:實時時鐘 NV Timekeeping RAM RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時間格式:HH:MM:SS RTC 存儲容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| DS1644P-150 | 制造商:Maxim Integrated Products 功能描述: |
| DS1645AB100 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:IC-1M CMOS NVRAM |
| DS1645AB-100-IND | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:NVRAM (Battery Based) |
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