參數(shù)資料
型號: 25LC256T-ISTG
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): 4/26頁
文件大?。?/td> 367K
代理商: 25LC256T-ISTG
25AA256/25LC256
DS21822C-page 4
Preliminary
2003 Microchip Technology Inc.
TABLE 1-3:
AC Waveform:
V
LO
= 0.2V
V
HI
= V
CC
- 0.2V
V
HI
= 4.0V
C
L
= 100 pF
Timing Measurement Reference Level
Input
Output
Note 1:
For V
CC
4.0V
2:
For Vcc > 4.0V
AC TEST CONDITIONS
17
T
HH
HOLD Hold Time
20
40
80
ns
ns
ns
4.5V
Vcc
5.5V
2.5V
Vcc
<
4.5V
1.8V
Vcc
<
2.5V
4.5V
Vcc
5.5V
(Note 1)
2.5V
Vcc
<
4.5V
(Note 1)
1.8V
Vcc
<
2.5V
(Note 1)
4.5V
Vcc
5.5V
2.5V
Vcc
<
4.5V
1.8V
Vcc
<
2.5V
18
T
HZ
HOLD Low to Output
High-Z
30
60
160
ns
ns
ns
19
T
HV
HOLD High to Output
Valid
30
60
160
ns
ns
ns
20
T
WC
Internal Write Cycle Time
5
ms
(N
OTE
2)
21
Endurance
1M
E/W
Cycles
(N
OTE
3)
TABLE 1-2:
AC CHARACTERISTICS (CONTINUED)
AC CHARACTERISTICS
Industrial (I):
Automotive (E): T
A
= -40°C to +125°C
T
A
= -40°C to +85°C
V
CC
= 1.8V to 5.5V
V
CC
= 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:
T
WC
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.
(Note 1)
(Note 2)
0.5 V
CC
0.5 V
CC
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