参数资料
型号: CAT28LV256NA-25T
元件分类: PROM
英文描述: 32K X 8 EEPROM 3V, 250 ns, PQCC32
封装: PLASTIC, LCC-32
文件页数: 9/12页
文件大小: 66K
代理商: CAT28LV256NA-25T
CAT28LV256
6
Doc. No. 1071, Rev. B
ADDRESS
CE
OE
WE
DATA OUT
tAS
DATA IN
DATA VALID
HIGH-Z
tCS
tAH
tCH
tWC
tOEH
tBLC
tDH
tDS
tOES
tWP
ADDRESS
CE
OE
WE
tRC
DATA OUT
DATA VALID
tCE
tOE
tOH
tAA
tOHZ
tHZ
VIH
HIGH-Z
tLZ
tOLZ
DEVICE OPERATION
Read
Data stored in the CAT28LV256 is transferred to the
data bus when
WE is held high, and both OE and CE are
held low. The data bus is set to a high impedance state
when either
CE or OE goes high. This 2-line control
architecture can be used to eliminate bus contention in
a system environment.
Byte Write
A write cycle is executed when both
CE and WE are low,
and
OE is high. Write cycles can be initiated using either
WE or CE, with the address input being latched on the
falling edge of
WE or CE, whichever occurs last. Data,
conversely, is latched on the rising edge of
WE or CE,
whichever occurs first. Once initiated, a byte write cycle
automatically erases the addressed byte and the new
data is written within 10 ms.
Figure 3. Read Cycle
28LV256 F06
Figure 4. Byte Write Cycle [
WE
WE Controlled]
28LV256 F07
相关PDF资料
PDF描述
CAT28LV256NI-20 32K X 8 EEPROM 3V, 200 ns, PQCC32
CAT28LV256P-35 32K X 8 EEPROM 3V, 350 ns, PDIP28
CAT29F150N-15B 13 Output, 3.3V SDRAM Buffer for Desktop PCs with 3 DIMMs
CAT29F150N-15T 18 Output, 3.3V SDRAM Buffer for Desktop PCs with 4 DIMMs
CAT29F150N-20B x8 Flash EEPROM
相关代理商/技术参数
参数描述
CAT28LV256NI25 制造商:Catalyst Semiconductor 功能描述:
CAT28LV256NI-25 功能描述:电可擦除可编程只读存储器 (32kx8) 256K 3V RoHS:否 制造商:Atmel 存储容量:2 Kbit 组织:256 B x 8 数据保留:100 yr 最大时钟频率:1000 KHz 最大工作电流:6 uA 工作电源电压:1.7 V to 5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8
CAT28LV256NI-30 功能描述:电可擦除可编程只读存储器 (32kx8) 256K 3V RoHS:否 制造商:Atmel 存储容量:2 Kbit 组织:256 B x 8 数据保留:100 yr 最大时钟频率:1000 KHz 最大工作电流:6 uA 工作电源电压:1.7 V to 5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8
CAT28LV256P-25 功能描述:电可擦除可编程只读存储器 (32kx8) 256K 3V RoHS:否 制造商:Atmel 存储容量:2 Kbit 组织:256 B x 8 数据保留:100 yr 最大时钟频率:1000 KHz 最大工作电流:6 uA 工作电源电压:1.7 V to 5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8
CAT28LV256P-30 功能描述:电可擦除可编程只读存储器 (32kx8) 256K 3V RoHS:否 制造商:Atmel 存储容量:2 Kbit 组织:256 B x 8 数据保留:100 yr 最大时钟频率:1000 KHz 最大工作电流:6 uA 工作电源电压:1.7 V to 5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8