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参数资料
| 型号： | DS1644P |
| 厂商： | DALLAS SEMICONDUCTOR |
| 元件分类： | Timer or RTC |
| 英文描述： | 0 TIMER(S), REAL TIME CLOCK, DMA34 |
| 封装： | POWERCAP MODULE-34 |
| 文件页数： | 9/11页 |
| 文件大小： | 178K |
| 代理商： | DS1644P |
DS1644/DS1644P
7 of 11
AC ELECTRICAL CHARACTERISTICS
(Over the Operating Range)
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
NOTES
Read Cycle Time
tRC
120
ns
Address Access Time
tAA
120
ns
CE
Access Time
tCEA
120
ns
CE
Data Off Time
tCEZ
40
ns
Output Enable Access Time
tOEA
100
ns
Output Enable Data Off Time
tOEZ
40
ns
Output Enable to DQ Low-Z
tOEL
5ns
CE
to DQ Low-Z
tCEL
5ns
Output Hold from Address
tOH
5ns
Write Cycle Time
tWC
120
ns
Address Setup Time
tAS
0ns
CE
Pulse Width
tCEW
100
ns
Address Hold from End of Write
tAH1
tAH2
5
30
ns
5
6
Write Pulse Width
tWEW
75
ns
WE
Data Off Time
tWEZ
40
ns
WE
or CE Inactive Time
tWR
10
ns
Data Setup Time
tDS
85
ns
Data Hold Time High
tDH1
tDH2
0
15
ns
5
6
AC TEST CONDITIONS
Input Levels:
0V to 3V
Transition Times:
5 ns
CAPACITANCE
(tA = 25
°C)
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
NOTES
Capacitance on all pins (except DQ)
CI
7pF
Capacitance on DQ pins
CDQ
10
pF
AC ELECTRICAL CHARACTERISTICS
(POWER-UP/DOWN TIMING)
(Over the Operating Range)
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
NOTES
CE
or WE at VIH before Power Down
tPD
0
s
VPF (Max) to VPF (Min) VCC Fall Time
tF
300
s
VPF (Min) to VSO VCC Fall Time
tFB
10
s
VSO to VPF (Min) VCC Rise Time
tRB
1
s
VPF (Min) to VPF (Max) VCC Rise Time
tR
0
s
Power-Up
tREC
15
35
ms
Expected Data Retention Time
(Oscillator On)
tDR
10
years
4
相关PDF资料 |
PDF描述 |
|---|---|
| DS1644 | 0 TIMER(S), REAL TIME CLOCK, DMA28 |
| DS1646-120 | 0 TIMER(S), REAL TIME CLOCK, DMA32 |
| DS1646P-120 | 0 TIMER(S), REAL TIME CLOCK, DMA34 |
| DS1646L-120 | 0 TIMER(S), REAL TIME CLOCK, DSO34 |
| DS1646 | 0 TIMER(S), REAL TIME CLOCK, DMA32 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| DS1644P+120 | 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:Nonvolatile Timekeeping RAM |
| DS1644P-120 | 功能描述:实时时钟 RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 总线接口:I2C 日期格式:DW:DM:M:Y 时间格式:HH:MM:SS RTC 存储容量:64 B 电源电压-最大:5.5 V 电源电压-最小:1.8 V 最大工作温度:+ 85 C 最小工作温度: 安装风格:Through Hole 封装 / 箱体:PDIP-8 封装:Tube |
| DS1644P120+ | 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:Nonvolatile Timekeeping RAM |
| DS1644P-120+ | 功能描述:实时时钟 NV Timekeeping RAM RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 总线接口:I2C 日期格式:DW:DM:M:Y 时间格式:HH:MM:SS RTC 存储容量:64 B 电源电压-最大:5.5 V 电源电压-最小:1.8 V 最大工作温度:+ 85 C 最小工作温度: 安装风格:Through Hole 封装 / 箱体:PDIP-8 封装:Tube |
| DS1644P-150 | 制造商:Maxim Integrated Products 功能描述: |
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