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参数资料
| 型号： | 25LC640XT-I/ST |
| 厂商： | Microchip Technology |
| 文件页数： | 3/24页 |
| 文件大小： | 0K |
| 描述： | IC EEPROM 64KBIT 2MHZ 8TSSOP |
| 标准包装： | 2,500 |
| 格式 - 存储器： | EEPROMs - 串行 |
| 存储器类型： | EEPROM |
| 存储容量： | 64K (8K x 8) |
| 速度： | 2MHz |
| 接口： | SPI 3 线串行 |
| 电源电压： | 2.5 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 8-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 8-TSSOP |
| 包装： | 带卷 (TR) |
25AA640/25LC640
TABLE 1-2:
AC CHARACTERISTICS
AC CHARACTERISTICS
Industrial (I): T A = -40°C to +85°C
Automotive (E): T A = -40°C to +125°C
V CC = 1.8V to 5.5V
V CC = 4.5V to 5.5V
Param.
No.
1
Sym
F CLK
Characteristic
Clock Frequency
Min
—
Max
3
Units
MHz
Conditions
V CC = 4.5V to 5.5V (Note 2)
—
—
2
1
MHz
MHz
V CC = 2.5V to 5.5V
V CC = 1.8V to 5.5V
2
T CSS
CS Setup Time
100
—
ns
V CC = 4.5V to 5.5V
250
500
—
—
ns
ns
V CC = 2.5V to 5.5V
V CC = 1.8V to 5.5V
3
T CSH
CS Hold Time
150
—
ns
V CC = 4.5V to 5.5V
250
475
—
—
ns
ns
V CC = 2.5V to 5.5V
V CC = 1.8V to 5.5V
4
T CSD
CS Disable Time
500
—
ns
5
T SU
Data Setup Time
30
—
ns
V CC = 4.5V to 5.5V
50
50
—
—
ns
ns
V CC = 2.5V to 5.5V
V CC = 1.8V to 5.5V
6
T HD
Data Hold Time
50
—
ns
V CC = 4.5V to 5.5V
100
100
—
—
ns
ns
V CC = 2.5V to 5.5V
V CC = 1.8V to 5.5V
7
8
9
T R
T F
T HI
CLK Rise Time
CLK Fall Time
Clock High Time
—
—
150
2
2
—
μ s
μ s
ns
(Note 1)
(Note 1)
V CC = 4.5V to 5.5V
230
475
—
—
ns
ns
V CC = 2.5V to 5.5V
V CC = 1.8V to 5.5V
10
T LO
Clock Low Time
150
—
ns
V CC = 4.5V to 5.5V
230
475
—
—
ns
ns
V CC = 2.5V to 5.5V
V CC = 1.8V to 5.5V
11
12
T CLD
T CLE
Clock Delay Time
Clock Enable Time
50
50
—
—
ns
ns
13
T V
Output Valid from
Clock Low
—
—
150
230
ns
ns
V CC = 4.5V to 5.5V
V CC = 2.5V to 5.5V
—
475
ns
V CC = 1.8V to 5.5V
14
15
T HO
T DIS
Output Hold Time
Output Disable Time
0
—
—
200
ns
ns
(Note 1)
V CC = 4.5V to 5.5V (Note 1)
—
—
250
500
ns
ns
V CC = 2.5V to 5.5V (Note 1)
V CC = 1.8V to 5.5V (Note 1)
16
T HS
HOLD Setup Time
100
—
ns
V CC = 4.5V to 5.5V
100
200
—
—
ns
ns
V CC = 2.5V to 5.5V
V CC = 1.8V to 5.5V
17
T HH
HOLD Hold Time
100
—
ns
V CC = 4.5V to 5.5V
100
200
—
—
ns
ns
V CC = 2.5V to 5.5V
V CC = 1.8V to 5.5V
18
T HZ
HOLD Low to Output
High-Z
100
150
—
—
ns
ns
V CC = 4.5V to 5.5V (Note 1)
V CC = 2.5V to 5.5V (Note 1)
200
—
ns
V CC = 1.8V to 5.5V (Note 1)
19
T HV
HOLD High to Output
Valid
100
150
—
—
ns
ns
V CC = 4.5V to 5.5V
V CC = 2.5V to 5.5V
200
—
ns
V CC = 1.8V to 5.5V
20
T WC
Internal Write Cycle
—
5
ms
Time
21
—
Endurance
1M
—
E/W
(Note 3)
Cycles
Note 1: This parameter is periodically sampled and not 100% tested.
2: F CLK max. = 2.5 MHz for T A > 85°C.
3: This parameter is not tested but established by characterization. For endurance estimates in a specific application,
please consult the Total Endurance? Model which can be obtained from Microchip’s web site at: www.microchip.com.
? 2008 Microchip Technology Inc.
DS21223H-page 3
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