25LC160A Datasheet, PDF (1/24 Pages) Microchip Technology – 16K SPI Bus Serial EEPROM

25AA160A/B, 25LC160A/B
16K SPI^™ Bus Serial EEPROM
Device Selection Table
Part Number
25LC160A
25AA160A
25LC160B
25AA160B
VCC Range
2.5-5.5V
1.8-5.5V
2.5-5.5V
1.8-5.5V
Page Size
16 Byte
16 Byte
32 Byte
32 Byte
Temp. Ranges
I,E
I
I,E
I
Packages
P, SN, ST, MS
P, SN, ST, MS
P, SN, ST, MS
P, SN, ST, MS
Features
• Max. clock 10 MHz
• Low-power CMOS technology
• 2048 x 8-bit organization
• 16 byte page (‘A’ version devices)
• 32 byte page (‘B’ version devices)
• Write cycle time: 5 ms max.
• Self-timed ERASE and WRITE cycles
• Block write protection
- Protect none, 1/4, 1/2 or all of array
• Built-in write protection
- Power-on/off data protection circuitry
- Write enable latch
- Write-protect pin
• Sequential read
• High reliability
- Endurance: 1,000,000 erase/write cycles
- Data retention: > 200 years
- ESD protection: > 4000V
• Temperature ranges supported;
- Industrial (I):
- Automotive (E):
-40°C to +85°C
-40°C to +125°C
Pin Function Table
Name
CS
SO
WP
VSS
SI
SCK
HOLD
VCC
Function
Chip Select Input
Serial Data Output
Write-Protect
Ground
Serial Data Input
Serial Clock Input
Hold Input
Supply Voltage
Description
The Microchip Technology Inc. 25AA160A/B,
25LC160A/B (25XX160A/B^*) are 16 Kbit Serial
Electrically Erasable 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 separate 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, transi-
tions on its inputs will be ignored, with the exception of
chip select, allowing the host to service higher priority
interrupts.
The 25XX160A/B is available in standard packages
including 8-lead PDIP and SOIC, and advanced
packaging including 8-lead MSOP, and 8-lead TSSOP.
Pb-free (Pure Matte Sn) finish is also available.
Package Types (not to scale)
TSSOP/MSOP
(ST, MS)
CS ¹
SO 2
WP ³
VSS ⁴
8 _VCC
7 _HOLD
6
5
SCK
SI
PDIP/SOIC
(P, SN)
CS 1
SO 2
WP 3
VSS 4
8 VCC
7 HOLD
6 SCK
5 SI
SPI is a registered trademark of Motorola Semiconductor.
*25XX160A/B is used in this document as a generic part
number for the 25AA160A/B, 25LC160A/B devices.
 2003 Microchip Technology Inc.
DS21807B-page 1