25AA256-I/SM Microchip Technology, 25AA256-I/SM Datasheet - Page 4

• Manufacturer Part Number: 25AA256-I/SM
• Description: IC EEPROM 256KBIT 10MHZ 8SOIC
• Manufacturer: Microchip Technology

Specifications of 25AA256-I/SM

• Memory Size: 256K (32K x 8)
• Format - Memory: EEPROMs - Serial
• Memory Type: EEPROM
• Speed: 10MHz
• Interface: SPI, 3-Wire Serial
• Voltage - Supply: 1.8 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 8-SOIC (5.3mm Width), 8-SOP, 8-SOEIAJ
• Memory Configuration: 32K X 8
• Ic Interface Type: Serial, SPI
• Clock Frequency: 10MHz
• Access Time: 50ns
• Supply Voltage Range: 1.8V To 5.5V
• Memory Case Style: SOIC
• No. Of Pins: 8
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

25AA256/25LC256
TABLE 1-2:
TABLE 1-3:
DS21822F-page 4
AC CHARACTERISTICS
18
21
AC Waveform:
Timing Measurement Reference Level
Param.
19
20
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
= 50 pF
2: T
3: This parameter is not tested but ensured by characterization. For endurance estimates in a specific
2: For V
= V
= 4.0V
= 0.2V
T
T
T
—
Sym.
HZ
HV
WC
is complete.
application, please consult the Total Endurance™ Model which can be obtained from Microchip’s web site
at 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
HOLD Low to Output
High-Z
HOLD High to Output
Valid
Internal Write Cycle
Time
Endurance
AC CHARACTERISTICS (CONTINUED)
AC TEST CONDITIONS
CC
CC
≤ 4.0V
> 4.0V
Characteristic
(Note 1)
(Note 2)
0.5 V
0.5 V
—
—
Industrial (I):
Automotive (E): T
CC
CC
Min.
160
160
1M
30
60
30
60
—
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
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
(N
(N
OTE
OTE
2)
3)
© 2007 Microchip Technology Inc.
Test Conditions
V
V
CC
CC
= 1.8V to 5.5V
= 2.5V to 5.5V