25AA160A/B, 25LC160A/B
16K SPI Bus Serial EEPROM
Device Selection Table
Part Number VCC Range Page Size Temp. Ranges Packages
25LC160A 2.5-5.5V 16 Byte I,E P, SN, ST, MS
25AA160A 1.8-5.5V 16 Byte I P, SN, ST, MS
25LC160B 2.5-5.5V 32 Byte I,E P, SN, ST, MS
25AA160B 1.8-5.5V 32 Byte I P, SN, ST, MS
Features Description
Max. clock 10 MHz The Microchip Technology Inc. 25AA160A/B,
*
25LC160A/B (25XX160A/B) are 16 Kbit Serial
Low-power CMOS technology
Electrically Erasable PROMs. The memory is accessed
2048 x 8-bit organization
via a simple Serial Peripheral Interface (SPI)
16 byte page (A version devices)
compatible serial bus. The bus signals required are a
32 byte page (B version devices)
clock input (SCK) plus separate data in (SI) and data
Write cycle time: 5 ms max.
out (SO) lines. Access to the device is controlled
through a Chip Select (CS) input.
Self-timed ERASE and WRITE cycles
Block write protection
Communication to the device can be paused via the
hold pin (HOLD). While the device is paused, transi-
- Protect none, 1/4, 1/2 or all of array
tions on its inputs will be ignored, with the exception of
Built-in write protection
chip select, allowing the host to service higher priority
- Power-on/off data protection circuitry
interrupts.
- Write enable latch
The 25XX160A/B is available in standard packages
- Write-protect pin
including 8-lead PDIP and SOIC, and advanced
Sequential read
packaging including 8-lead MSOP, and 8-lead TSSOP.
High reliability
Pb-free (Pure Matte Sn) finish is also available.
- Endurance: 1,000,000 erase/write cycles
- Data retention: > 200 years Package Types (not to scale)
- ESD protection: > 4000V
TSSOP/MSOP PDIP/SOIC
Temperature ranges supported;
(ST, MS) (P, SN)
- Industrial (I): -40Cto +85C
1 8
- Automotive (E): -40C to +125C VCC
CS CS 1 8 VCC
2 7
SO
HOLD
SO 2 7 HOLD
6
3
WP SCK
4 5
VSS SI
WP 3 6 SCK
Pin Function Table
VSS 4 5 SI
Name Function
CS Chip Select Input SPI is a registered trademark of Motorola Semiconductor.
SO Serial Data Output
WP Write-Protect
VSS Ground
SI Serial Data Input
SCK Serial Clock Input
HOLD Hold Input
*25XX160A/B is used in this document as a generic part
VCC Supply Voltage
number for the 25AA160A/B, 25LC160A/B devices.
2003 Microchip Technology Inc. DS21807B-page 125XX160A/B
1.0 ELECTRICAL CHARACTERISTICS
()
Absolute Maximum Ratings
VCC.............................................................................................................................................................................7.0V
All inputs and outputs w.r.t. VSS ......................................................................................................... -0.6V to VCC +1.0V
Storage temperature .................................................................................................................................-65C to 150C
Ambient temperature under bias...............................................................................................................-65C to 125C
ESD protection on all pins..........................................................................................................................................4 kV
NOTICE: Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the
device. This is a stress rating only and functional operation of the device at those or any other conditions above those
indicated in the operational listings of this specification is not implied. Exposure to maximum rating conditions for an
extended period of time may affect device reliability.
TABLE 1-1: DC CHARACTERISTICS
Industrial (I): TAMB = -40C to +85C VCC = 1.8V to 5.5V
DC CHARACTERISTICS
Automotive (E): TAMB = -40C to +125C VCC = 2.5V to 5.5V
Param.
Sym. Characteristic Min. Max. Units Test Conditions
No.
D001 VIH1 High-level input 2.0 VCC +1 V VCC 2.7V (Note)
voltage
D002 VIH2 0.7 VCC VCC +1 V VCC< 2.7V (Note)
D003 VIL1 Low-level input -0.3 0.8 V VCC 2.7V (Note)
voltage
D004 VIL2 -0.3 0.2 VCC VVCC < 2.7V (Note)
D005 VOL Low-level output 0.4 VIOL = 2.1 mA
voltage
D006 VOL 0.2 VIOL = 1.0 mA, VCC < 2.5V
D007 VOH High-level output VCC -0.5 V IOH = -400 A
voltage
D008 ILI Input leakage current 1 ACS = VCC, VIN = VSS TO VCC
D009 ILO Output leakage 1 ACS = VCC, VOUT = VSS TO VCC
current
D010 CINT Internal Capacitance 7 pF TAMB = 25C, CLK = 1.0 MHz,
(all inputs and VCC = 5.0V (Note)
outputs)
D011 ICC Read 6 mA VCC = 5.5V; FCLK = 10.0 MHz;
SO = Open
Operating Current 2.5 mA VCC = 2.5V; FCLK = 5.0 MHz;
SO = Open
D012 ICC Write 3 mA VCC = 5.5V
D013 ICCS 5 A CS = VCC = 5.5V, Inputs tied to VCC or
Standby Current VSS, TAMB = -40C TO +125C
1 A CS = VCC = 2.5V, Inputs tied to VCC or
VSS, TAMB = -40C TO +85C
Note: This parameter is periodically sampled and not 100% tested.
DS21807B-page 2 2003 Microchip Technology Inc.