25lc256 Microchip Technology Inc., 25lc256 Datasheet - Page 3

• Manufacturer Part Number: 25lc256
• Description: 256k Spi Bus Serial Eeprom
• Manufacturer: Microchip Technology Inc.

TABLE 1-2:
© 2007 Microchip Technology Inc.
AC CHARACTERISTICS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
Param.
No.
Note 1: This parameter is periodically sampled and not 100% tested.
2: T
3: This parameter is not tested but ensured by characterization. For endurance estimates in a specific
F
T
T
T
Tsu
T
T
T
T
T
T
T
T
T
T
T
T
Sym.
CSS
CSH
CSD
CLD
CLE
CLK
HD
R
F
HI
LO
V
HO
DIS
HS
HH
is complete.
application, please consult the Total Endurance™ Model which can be obtained from Microchip’s web site
at www.microchip.com.
WC
begins on the rising edge of CS after a valid write sequence and ends when the internal write cycle
Clock Frequency
CS Setup Time
CS Hold Time
CS Disable Time
Data Setup Time
Data Hold Time
CLK Rise Time
CLK Fall Time
Clock High Time
Clock Low Time
Clock Delay Time
Clock Enable Time
Output Valid from Clock
Low
Output Hold Time
Output Disable Time
HOLD Setup Time
HOLD Hold Time
AC CHARACTERISTICS
Characteristic
Industrial (I):
Automotive (E): T
Min.
100
150
100
200
250
100
150
100
150
50
50
10
20
30
20
40
50
50
50
50
50
20
40
80
20
40
80
—
—
—
—
—
—
—
—
—
—
—
0
Max.
100
100
100
160
160
10
50
40
80
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
5
3
T
A
A
= -40°C to +85°C
= -40°C to +125°C
Units
MHz
MHz
MHz
25AA256/25LC256
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
4.5V ≤ Vcc ≤ 5.5V
2.5V ≤ Vcc < 4.5V
1.8V ≤ Vcc < 2.5V
4.5V ≤ Vcc ≤ 5.5V
2.5V ≤ Vcc < 4.5V
1.8V ≤ Vcc < 2.5V
4.5V ≤ Vcc ≤ 5.5V
2.5V ≤ Vcc < 4.5V
1.8V ≤ Vcc < 2.5V
—
4.5V ≤ Vcc ≤ 5.5V
2.5V ≤ Vcc < 4.5V
1.8V ≤ Vcc < 2.5V
4.5V ≤ Vcc ≤ 5.5V
2.5V ≤ Vcc < 4.5V
1.8V ≤ Vcc < 2.5V
(Note 1)
(Note 1)
4.5V ≤ Vcc ≤ 5.5V
2.5V ≤ Vcc < 4.5V
1.8V ≤ Vcc < 2.5V
4.5V ≤ Vcc ≤ 5.5V
2.5V ≤ Vcc < 4.5V
1.8V ≤ Vcc < 2.5V
—
—
4.5V ≤ Vcc ≤ 5.5V
2.5V ≤ Vcc < 4.5V
1.8V ≤ Vcc < 2.5V
(Note 1)
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
4.5V ≤ Vcc ≤ 5.5V
2.5V ≤ Vcc < 4.5V
1.8V ≤ Vcc < 2.5V
Test Conditions
V
V
CC
CC
= 1.8V to 5.5V
= 2.5V to 5.5V
DS21822F-page 3