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參數(shù)資料
型號: DS1251Y-70+
廠商: Maxim Integrated Products
文件頁數(shù): 3/20頁
文件大?。?/td> 0K
描述: IC NVSRAM 4MBIT 70NS 32DIP
產(chǎn)品培訓(xùn)模塊: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝: 11
類型: Phantom 計時芯片
特點(diǎn): 閏年,NVSRAM
存儲容量: 512KB
時間格式: HH:MM:SS:hh(12/24 小時)
數(shù)據(jù)格式: YY-MM-DD-dd
接口: 并聯(lián)
電源電壓: 4.5 V ~ 5.5 V
工作溫度: 0°C ~ 70°C
安裝類型: 通孔
封裝/外殼: 32-DIP 模塊(0.600",15.24mm)
供應(yīng)商設(shè)備封裝: 32-EDIP
包裝: 管件
DS1251/DS1251P
11 of 20
PHANTOM CLOCK AC ELECTRICAL CHARACTERISTICS
(TA = Over the operating range.) (5V)
10B
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
NOTES
Read Cycle Time
tRC
65
ns
CE
Access Time
tCO
55
ns
OE
Access Time
tOE
55
ns
CE
to Output Low-Z
tCOE
5
ns
OE
to Output Low-Z
tOEE
5
ns
CE
to Output High-Z
tOD
25
ns
5
OE
to Output High-Z
tODO
25
ns
5
Read Recovery
tRR
10
ns
Write Cycle Time
tWC
65
ns
Write Pulse Width
tWP
55
ns
3
Write Recovery
tWR
10
ns
10
Data Setup Time
tDS
30
ns
4
Data Hold Time
tDH
0
ns
4
CE
Pulse Width
tCW
60
ns
RST
Pulse Width
tRST
65
ns
POWER-DOWN/POWER-UP TIMING
(TA = Over the operating range.) (3.3V)
11B
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
NOTES
CE
at VIH before Power-Down
tPD
0
s
VCC Slew from VPF(MAX) to
VPF(MIN)(CE at VPF)
tF
300
s
VCC Slew from VPF(MIN) to VSO
tFB
10
s
VCC Slew from VPF(MAX) to
VPF(MIN) (CE at VPF)
tR
0
s
CE
at VIH after Power-Up
tREC
1.5
2.5
ms
(TA = +25°C)
4B
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
NOTES
Expected Data Retention Time
tDR
10
years
9
Warning: Under no circumstances are negative undershoots of any amplitude allowed when device
is in battery-backup mode.
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參數(shù)描述
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DS1251YP 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:4096k NV SRAM with Phantom Clock
DS1251YP/WP 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:PowerCap with Crystal
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DS1251YP-70 功能描述:實(shí)時時鐘 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(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube