參數(shù)資料
型號： 25AA256T-EPG
廠商： Microchip Technology Inc.
元件分類： EEPROM
英文描述： 256K SPI Bus Serial EEPROM
中文描述： 256K SPI總線串行EEPROM
文件頁數(shù)： 21/26頁
文件大小： 367K
代理商： 25AA256T-EPG
25AA256/25LC256
DS21822C-page 4
Preliminary
2003 Microchip Technology Inc.
TABLE 1-3:
AC TEST CONDITIONS
17
THH
HOLD Hold Time
20
40
80
—
ns
4.5V
≤ Vcc ≤ 5.5V
2.5V
≤ Vcc < 4.5V
1.8V
≤ Vcc < 2.5V
18
THZ
HOLD Low to Output
High-Z
30
60
160
—
ns
4.5V
≤ Vcc ≤ 5.5V(Note 1)
2.5V
≤ Vcc < 4.5V(Note 1)
1.8V
≤ Vcc < 2.5V(Note 1)
19
THV
HOLD High to Output
Valid
30
60
160
—
ns
4.5V
≤ Vcc ≤ 5.5V
2.5V
≤ Vcc < 4.5V
1.8V
≤ Vcc < 2.5V
20
TWC
Internal Write Cycle Time
—
5
ms
21
—
Endurance
1M
—
E/W
Cycles
TABLE 1-2:
AC CHARACTERISTICS (CONTINUED)
AC CHARACTERISTICS
Industrial (I):
TA = -40°C to +85°C
VCC = 1.8V to 5.5V
Automotive (E): TA = -40°C to +125°C
VCC = 2.5V to 5.5V
Param.
No.
Sym.
Characteristic
Min.
Max.
Units
Test Conditions
Note 1: This parameter is periodically sampled and not 100% tested.
2: TWC begins on the rising edge of CS after a valid write sequence and ends when the internal write cycle is
complete.
3: This parameter is not tested but ensured by characterization. For endurance estimates in a specific
application, please consult the Total Endurance Model which can be obtained from our web site:
www.microchip.com.
AC Waveform:
VLO = 0.2V
—
VHI = VCC - 0.2V
VHI = 4.0V
CL = 100 pF
—
Timing Measurement Reference Level
Input
0.5 VCC
Output
0.5 VCC
Note 1: For VCC
≤ 4.0V
2: For Vcc > 4.0V
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