参数资料
型号: AT25256W-10SI-2.7
厂商: Atmel
文件页数: 4/22页
文件大小: 0K
描述: IC EEPROM 256KBIT 3MHZ 8SOIC
标准包装: 94
格式 - 存储器: EEPROMs - 串行
存储器类型: EEPROM
存储容量: 256K (32K x 8)
速度: 2.1MHz,3MHz
接口: SPI 3 线串行
电源电压: 2.7 V ~ 5.5 V
工作温度: -40°C ~ 85°C
封装/外壳: 8-SOIC(0.209",5.30mm 宽)
供应商设备封装: 8-SOIC
包装: 管件
Table 4. AC Characteristics
Applicable over recommended operating range from T AI = – 40 ° C to + 85 ° C, T AE = – 40 ° C to +125 ° C, V CC = As Specified,
CL = 1 TTL Gate and 100 pF (unless otherwise noted)
Symbol
Parameter
Voltage
Min
Max
Units
4.5 – 5.5
0
3.0
f SCK
SCK Clock Frequency
2.7 – 5.5
0
2.1
MHz
1.8 – 5.5
4.5 – 5.5
0
0.5
2
t RI
Input Rise Time
2.7 – 5.5
2
μs
1.8 – 5.5
4.5 – 5.5
2
2
t FI
Input Fall Time
2.7 – 5.5
2
μs
1.8 – 5.5
4.5 – 5.5
150
2
t WH
SCK High Time
2.7 – 5.5
200
ns
1.8 – 5.5
4.5 – 5.5
800
150
t WL
SCK Low Time
2.7 – 5.5
200
ns
1.8 – 5.5
4.5 – 5.5
800
250
t CS
CS High Time
2.7 – 5.5
250
ns
1.8 – 5.5
4.5 – 5.5
1000
100
t CSS
CS Setup Time
2.7 – 5.5
250
ns
1.8 – 5.5
4.5 – 5.5
1000
150
t CSH
CS Hold Time
2.7 – 5.5
250
ns
1.8 – 5.5
4.5 – 5.5
1000
30
t SU
Data In Setup Time
2.7 – 5.5
50
ns
1.8 – 5.5
4.5 – 5.5
100
50
t H
Data In Hold Time
2.7 – 5.5
50
ns
1.8 – 5.5
4.5 – 5.5
100
100
t HD
Hold Setup Time
2.7 – 5.5
100
ns
1.8 – 5.5
4.5 – 5.5
400
200
t CD
Hold Hold Time
2.7 – 5.5
300
ns
1.8 – 5.5
400
4.5 – 5.5
0
150
t V
Output Valid
2.7 – 5.5
0
200
ns
1.8 – 5.5
4.5 – 5.5
0
0
800
t HO
Output Hold Time
2.7 – 5.5
0
ns
1.8 – 5.5
0
4.5 – 5.5
0
100
t LZ
Hold to Output Low Z
2.7 – 5.5
0
200
ns
4
AT25128/256
1.8 – 5.5
0
300
0872O–SEEPR–03/05
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