参数资料
型号: AT25256B-SSHL-B
厂商: Atmel
文件页数: 4/24页
文件大小: 0K
描述: IC EEPROM 256KBIT 20MHZ 8SOIC
标准包装: 100
格式 - 存储器: EEPROMs - 串行
存储器类型: EEPROM
存储容量: 256K (32K x 8)
速度: 5MHz,10MHz,20MHz
接口: SPI 3 线串行
电源电压: 1.8 V ~ 5.5 V
工作温度: -40°C ~ 85°C
封装/外壳: 8-SOIC(0.154",3.90mm 宽)
供应商设备封装: 8-SOIC
包装: 管件
Table 1-3.
AC Characteristics
Applicable over recommended operating range from T A = – 40°C to + 85°C, V CC = As Specified,
CL = 1 TTL Gate and 30pF (unless otherwise noted)
Symbol
Parameter
Voltage
Min
Max
Units
4.5–5.5
0
20
f SCK
SCK Clock Frequency
2.5–5.5
0
10
MHz
1.8–5.5
4.5–5.5
0
5
2
t RI
Input Rise Time
2.5–5.5
2
μs
1.8–5.5
4.5–5.5
2
2
t FI
Input Fall Time
2.5–5.5
2
μs
1.8–5.5
4.5–5.5
20
2
t WH
SCK High Time
2.5–5.5
40
ns
1.8–5.5
4.5–5.5
80
20
t WL
SCK Low Time
2.5–5.5
40
ns
1.8–5.5
4.5–5.5
80
100
t CS
CS High Time
2.5–5.5
100
ns
1.8–5.5
4.5–5.5
200
100
t CSS
CS Setup Time
2.5–5.5
100
ns
1.8–5.5
4.5–5.5
200
100
t CSH
CS Hold Time
2.5–5.5
100
ns
1.8–5.5
4.5–5.5
200
5
t SU
Data In Setup Time
2.5–5.5
10
ns
1.8–5.5
4.5–5.5
20
5
t H
Data In Hold Time
2.5–5.5
10
ns
1.8–5.5
4.5–5.5
20
5
t HD
HOLD Setup Time
2.5–5.5
10
ns
1.8–5.5
4.5–5.5
20
5
t CD
HOLD Hold Time
2.5–5.5
10
ns
1.8–5.5
20
4.5–5.5
0
20
t V
Output Valid
2.5–5.5
0
40
ns
1.8–5.5
4.5–5.5
0
0
80
t HO
Output Hold Time
2.5–5.5
0
ns
1.8–5.5
0
4
Atmel AT25128B/256B
8698C–SEEPR–8/11
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