參數(shù)資料
型號(hào)： CY7C144AV
英文描述： Memory
中文描述： 內(nèi)存
文件頁(yè)數(shù)： 19/20頁(yè)
文件大?。?/td> 301K
代理商： CY7C144AV
CY7C138AV/144AV/006AV
CY7C139AV/145AV/016AV
CY7C007AV/017AV
Document #: 38-06051 Rev. *A
Page 8 of 20
Data Retention Mode
The CY7C0138AV/144AV/006AV/007AV and CY7C139AV/
145AV/016AV/017AV are designed with battery backup in
mind. Data retention voltage and supply current are guaran-
teed over temperature. The following rules ensure data reten-
tion:
1. Chip enable (CE) must be held HIGH during data retention, with-
in VCC to VCC – 0.2V.
2. CE must be kept between VCC – 0.2V and 70% of VCC
during the power-up and power-down transitions.
3. The RAM can begin operation >tRC after VCC reaches the
minimum operating voltage (3.0 volts).
Notes:
22. tBDD is a calculated parameter and is the greater of tWDD–tPWE (actual) or tDDD–tSD (actual).
23. CE = VCC, Vin = GND to VCC, TA = 25°C. This parameter is guaranteed but not tested.
tWB
R/W HIGH after BUSY (Slave)
0
ns
tWH
R/W HIGH after BUSY HIGH (Slave)
15
17
ns
tBDD
[22]
BUSY HIGH to Data Valid
20
25
ns
INTERRUPT TIMING[21]
tINS
INT Set Time
20
ns
tINR
INT Reset Time
20
ns
SEMAPHORE TIMING
tSOP
SEM Flag Update Pulse (OE or SEM)
10
12
ns
tSWRD
SEM Flag Write to Read Time
5
ns
tSPS
SEM Flag Contention Window
5
ns
tSAA
SEM Address Access Time
20
25
ns
Switching Characteristics Over the Operating Range[15] (continued)
Parameter
Description
CY7C138AV/144AV/006AV
CY7C139AV/145AV/016AV
CY7C007AV/017AV
Unit
-20
-25
Min.
Max.
Min.
Max.
Timing
Parameter
Test Conditions[23]
Max.
Unit
ICCDR1
@ VCCDR = 2V
50
A
Data Retention Mode
3.0V
VCC > 2.0V
VCC to VCC – 0.2V
VCC
CE
tRC
V
IH
相關(guān)PDF資料
PDF描述
CY7C144AV-20AC x8 Dual-Port SRAM
CY7C144AV-20JC x8 Dual-Port SRAM
CY7C144AV-25AC x8 Dual-Port SRAM
CY7C144AV-25JC x8 Dual-Port SRAM
CY7C146-35JCT x8 Dual-Port SRAM
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
CY7C144AV-20AC 制造商:Cypress Semiconductor 功能描述:SRAM Chip Async Dual 3.3V 64K-Bit 8K x 8 20ns 64-Pin TQFP
CY7C144AV-25AC 功能描述:IC SRAM 64KB DUAL 64-TQFP RoHS:否 類別:集成電路 (IC) >> 存儲(chǔ)器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 格式 - 存儲(chǔ)器:EEPROMs - 串行 存儲(chǔ)器類型:EEPROM 存儲(chǔ)容量:4K (512 x 8) 速度:400kHz 接口:I²C，2 線串口 電源電壓:2.7 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 封裝/外殼:8-SOIC（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:8-MFP 包裝:帶卷 (TR)
CY7C144AV-25ACKJ 制造商:Cypress Semiconductor 功能描述:
CY7C144AV25AI 制造商:CYPRESS 功能描述:*
CY7C144AV-25AI 制造商:Rochester Electronics LLC 功能描述:3.3V 8K X 8 ASYNC DUAL PORT SRAM - Bulk
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