25LC256-EMF MICROCHIP [Microchip Technology], 25LC256-EMF Datasheet - Page 4

• Manufacturer Part Number: 25LC256-EMF
• Description: 256K SPI Bus Serial EEPROM
• Manufacturer: MICROCHIP [Microchip Technology]

25AA256/25LC256
TABLE 1-2:
TABLE 1-3:
DS21822C-page 4
AC CHARACTERISTICS
Param.
17
18
19
20
21
AC Waveform:
Timing Measurement Reference Level
No.
Note 1: This parameter is periodically sampled and not 100% tested.
Note 1: For V
V
V
V
C
Input
Output
LO
HI
HI
L
= 100 pF
2: T
3: This parameter is not tested but ensured by characterization. For endurance estimates in a specific
2: For Vcc > 4.0V
= V
= 4.0V
= 0.2V
T
T
T
T
—
Sym.
WC
HH
HZ
HV
complete.
application, please consult the Total Endurance™ Model which can be obtained from our web site:
www.microchip.com.
CC
WC
- 0.2V
begins on the rising edge of CS after a valid write sequence and ends when the internal write cycle is
HOLD Hold Time
HOLD Low to Output
High-Z
HOLD High to Output
Valid
Internal Write Cycle Time
Endurance
CC
AC CHARACTERISTICS (CONTINUED)
AC TEST CONDITIONS
4.0V
Characteristic
(Note 1)
(Note 2)
0.5 V
0.5 V
—
—
Industrial (I):
Automotive (E): T
CC
CC
Min.
160
160
1M
20
40
80
30
60
30
60
—
Preliminary
Max.
—
—
—
—
—
—
—
—
—
—
5
T
A
A
= -40°C to +85°C
= -40°C to +125°C
Cycles
Units
E/W
ms
ns
ns
ns
ns
ns
ns
ns
ns
ns
4.5V
2.5V
1.8V
4.5V
2.5V
1.8V
4.5V
2.5V
1.8V
(N
(N
OTE
OTE
2)
3)
Vcc
Vcc
Vcc
Vcc
Vcc
Vcc
Vcc
Vcc
Vcc
 2003 Microchip Technology Inc.
Test Conditions
V
V
CC
CC
5.5V
4.5V
2.5V
5.5V(Note 1)
4.5V(Note 1)
2.5V(Note 1)
5.5V
4.5V
2.5V
= 1.8V to 5.5V
= 2.5V to 5.5V