25AA128 Microchip Technology, 25AA128 Datasheet
25AA128
Manufacturer Part Number
25AA128
Description
128K SPI Bus Serial EEPROM
Manufacturer
Microchip Technology
Datasheet
1.25AA128.pdf
(26 pages)
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Device Selection Table
Features
• Max. Clock 10 MHz
• Low-power CMOS Technology
• 16,384 x 8-bit Organization
• 64 Byte Page
• Self-timed Erase and Write Cycles (5 ms max.)
• Block Write Protection
• Built-in Write Protection
• Sequential Read
• High Reliability
• Temperature Ranges Supported;
• Standard and Pb-free Packages Available
Pin Function Table
© 2007 Microchip Technology Inc.
* 25XX128 is used in this document as a generic part number for the 25AA128, 25LC128 devices.
- Max. Write Current: 5 mA at 5.5V, 10 MHz
- Read Current: 5 mA at 5.5V, 10 MHz
- Standby Current: 5 μA at 5.5V
- Protect none, 1/4, 1/2 or all of array
- Power-on/off data protection circuitry
- Write enable latch
- Write-protect pin
- Endurance: 1,000,000 erase/write cycles
- Data retention: > 200 years
- ESD protection: > 4000V
- Industrial (I):
- Automotive (E):
Part Number
Name
HOLD
SCK
V
V
WP
25LC128
25AA128
CS
SO
SI
CC
SS
Chip Select Input
Serial Data Output
Write-Protect
Ground
Serial Data Input
Serial Clock Input
Hold Input
Supply Voltage
-40°C to +85°C
-40°C to +125°C
V
CC
2.5-5.5V
1.8-5.5V
128K SPI Bus Serial EEPROM
Function
Range
25AA128/25LC128
Page Size
64 Byte
64 Byte
Description
The Microchip Technology Inc. 25AA128/25LC128
(25XX128
PROMs. The memory is accessed via a simple Serial
Peripheral Interface (SPI) compatible serial bus. The
bus signals required are a clock input (SCK) plus sep-
arate data in (SI) and data out (SO) lines. Access to the
device is controlled through a Chip Select (CS) input.
Communication to the device can be paused via the
hold pin (HOLD). While the device is paused,
transitions on its inputs will be ignored, with the
exception of Chip Select, allowing the host to service
higher priority interrupts.
The 25XX128 is available in standard packages
including 8-lead PDIP and SOIC, and advanced
packaging including 8-lead DFN and 8-lead TSSOP.
Pb-free (Pure Sn) finish is also available.
Package Types (not to scale)
Temp. Ranges
V
WP
CS
SO
SS
1
2
3
4
I,E
*
TSSOP
) are 128k-bit Serial Electrically Erasable
I
(ST)
V
WP
SO
CS
SS
8
7
6
5
1
2
3
4
V
HOLD
SCK
SI
CC
DFN
(MF)
V
WP
CS
SO
SS
P, SN, ST, MF
P, SN, ST, MF
Packages
PDIP/SOIC
8
7
6
5
1
2
3
4
(P, SN)
V
HOLD
SCK
SI
CC
DS21831C-page 1
8
7
6
5
V
HOLD
SCK
SI
CC
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