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参数资料
| 型号： | M48T251V-85PM1TR |
| 厂商： | 意法半导体 |
| 英文描述： | 5.0 or 3.3V, 4096K TIMEKEEPER SRAM with PHANTOM |
| 中文描述： | 5.0或3.3V，4096K与幻象计时器的SRAM |
| 文件页数： | 10/24页 |
| 文件大小： | 366K |
| 代理商： | M48T251V-85PM1TR |
M48T251Y, M48T251V
10/24
Table 4. Memory AC Characteristics, M48T251V
Note: 1. Valid for Ambient Operating Temperature: T
A
= 0 to 70°C; V
CC
= 4.5 to 5.5V or 3.0 to 3.6V (except where noted).
2. These parameters are sampled with a 5 pF load are not 100% tested.
3. t
WP
is specified as the logical AND of CE and WE. t
WP
is measured from the latter of CE or WE going low to the earlier of CE or
WE going high.
4. t
WR
is a function of the latter occurring edge of WE or CE.
5. t
DH
and t
DS
are measured from the earlier of CE or WE going high.
Symbol
Parameter
(1)
M48T251V–85
Unit
Min
Max
t
AVAV
t
RC
READ Cycle Time
85
ns
t
AVQV
t
ACC
Access Time
85
ns
t
ELQV
t
CO
Chip Enable Low to Output Valid
85
ns
t
GLQV
t
OE
Output Enable Low to Output Valid
45
ns
t
ELQX
t
GLQX
t
COE
Chip Enable or Output Enable Low to Output Transition
5
ns
t
AXQX
t
OH
Output Hold from Address Change
5
ns
t
EHQZ
t
GHQZ
t
OD(2)
Chip Enable or Output Enable High to Output Hi-Z
35
ns
t
WLQZ
t
ODW(2)
Output Hi-Z from WE
30
ns
t
AVAV
t
WC
WRITE Cycle Time
85
ns
t
WLWH
t
WP1(3)
WRITE Enable Pulse Width
65
ns
t
ELEH
t
WP2
Chip Enable Pulse Width
75
ns
t
AVEL
t
AVWL
t
AW
Address Setup Time
0
ns
t
EHAX
t
WR1(4)
WRITE Recovery Time
15
ns
t
WHAX
t
WR2
Address Hold Time from WE
5
ns
t
WHQX
t
OEW
Output Active from WE
5
ns
t
DVEH
t
DVWH
t
DS(5)
Data Setup Time
35
ns
t
WHDX
t
DH1(5)
Data Hold Time from WE
0
ns
t
EHDX
t
DH2
Data Hold Time from CE
15
ns
相关PDF资料 |
PDF描述 |
|---|---|
| M48T251V | 5.0 or 3.3V, 4096K TIMEKEEPER SRAM with PHANTOM |
| M48T251VPM | 5.0 or 3.3V, 4096K TIMEKEEPER SRAM with PHANTOM |
| M48T35AYMH | ER 5C 5#16 PIN PLUG |
| M48T35YSH | Hook-Up Wire; Conductor Size AWG:24; No. Strands x Strand Size:Solid; Jacket Color:Red; Approval Bodies:UL, CSA; Approval Categories:UL AWM Style 1061; CSA AWM; Conductor Material:Copper; Jacket Material:Polyvinylchloride (PVC) RoHS Compliant: Yes |
| M48T35Y-70MH6TR | 256 Kbit 32Kb x8 TIMEKEEPER SRAM |
相关代理商/技术参数 |
参数描述 |
|---|---|
| M48T251VPM | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:5.0 or 3.3V, 4096K TIMEKEEPER SRAM with PHANTOM |
| M48T251Y | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:5.0 or 3.3V, 4096K TIMEKEEPER SRAM with PHANTOM |
| M48T251Y-70PM1 | 功能描述:实时时钟 4M (512Kx8) 70ns 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 |
| M48T251Y-70PM1TR | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:5.0 or 3.3V, 4096K TIMEKEEPER SRAM with PHANTOM |
| M48T251Y-85PM1 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:5.0 or 3.3V, 4096K TIMEKEEPER SRAM with PHANTOM |
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