25AA010A/25LC010A
1K SPI Bus Serial EEPROM
Device Selection Table
Part Number
VCC Range
Page Size
Temp. Ranges
Packages
25AA010A
25LC010A
1.8-5.5V
2.5-5.5V
16 Bytes
16 Bytes
I
P, MS, SN, ST, MC, OT
P, MS, SN, ST, MC, OT
I, E
Features:
Description:
• 10 MHz max. clock frequency
• Low-power CMOS technology:
- 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
• 128 x 8-bit organization
The Microchip Technology Inc. 25XX010A* is a 1 Kbit
Serial Electrically Erasable Programmable Read-Only
Memory (EEPROM). The memory is accessed via a
simple Serial Peripheral Interface™ (SPI) compatible
serial bus. The bus signals required are a clock input
(SCK) plus separate data in (SI) and data out (SO)
lines. Access to the device is controlled through a Chip
Select (CS) input.
• Write Page mode (up to 16 bytes)
• Sequential Read
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.
• Self-timed Erase and Write cycles (5 ms max.)
• Block Write protection:
- Protect none, 1/4, 1/2 or all of array
• Built-in Write protection:
The 25XX010A is available in standard packages
including 8-lead PDIP and SOIC, and advanced
packages including 8-lead MSOP, 8-lead TSSOP and
rotated TSSOP, 8-lead 2x3 DFN, and 6-lead SOT-23.
- Power-on/off data protection circuitry
- Write enable latch
- Write-protect pin
• High reliability:
- Endurance: 1,000,000 Erase/Write cycles
- Data retention: > 200 years
- ESD protection: > 4000V
Package Types (not to scale)
TSSOP/MSOP
PDIP/SOIC
(P, SN)
(ST, MS)
• Temperature ranges supported:
- Industrial (I):
- Automotive (E):
CS
SO
WP
1
2
3
4
8
7
6
5
VCC
1
2
3
4
8
7
6
5
CS
SO
WP
V
CC
-40°C to +85°C
-40°C to +125°C
HOLD
SCK
SI
HOLD
SCK
SI
VSS
• Pb-Free packages available
VSS
DFN
Pin Function Table
SOT-23
(MC)
(OT)
Name
Function
Chip Select Input
V
CC
HOLD
SCK
SI
1
8
1
2
3
6
5
4
CS
SO
SCK
V
DD
2
3
4
7
6
5
CS
SO
VSS
CS
SO
WP
SI
Serial Data Output
Write-Protect
Ground
VSS
WP
X-Rotated TSSOP
VSS
SI
(X/ST)
Serial Data Input
Serial Clock Input
Hold Input
1
2
3
4
8
7
6
5
HOLD
SCK
SI
VSS
WP
VCC
SCK
HOLD
VCC
CS
SO
Supply Voltage
*25XX010A is used in this document as a generic part number for the
25AA010A and the 25LC010A.
© 2006 Microchip Technology Inc.
Preliminary
DS21832C-page 1