®
IS25C08
IS25C16
8K-BIT/16K-BIT SPI SERIAL
ELECTRICALLY ERASABLE PROM
ISSI
PreliminaryInformation
APRIL2006
FEATURES
DESCRIPTION
TheIS25C08andIS25C16areelectricallyerasable
PROM devices that use the Serial Peripheral Interface
(SPI) for communications. The IS25C08 is 8Kbit
(1024x 8) and the IS25C16 is 16Kbit (2048 x 8). The
IS25C08/16EEPROMsareofferedinawideoperating
voltage range of 1.8V to 5.5V compatible with most
application voltages. ISSI designed the IS25C08/16 to
be an efficient SPI EEPROM solution. The devices are
• SerialPeripheralInterface(SPI)Compatible
— Supports SPI Modes 0 (0,0) and 3 (1,1)
• Wide-voltageOperation
— Vcc = 1.8V to 5.5V
• LowpowerCMOS
— Active current less than 3.0 mA (2.5V)
— Standby current less than 2.0 µA (2.5V)
• Block Write Protection
packaged in 8-pin PDIP, 8-pin SOIC, 8-pin TSSOP, and
8-ball CSP.
— Protect 1/4, 1/2, or Entire Array
• 16 byte page write mode
— Partial page writes allowed
• 10 MHz Clock Rate (5V)
• Self timed write cycles (5 ms Typical)
• High-reliability
— Endurance: 1 million cycles per byte
— Data retention: 100 years
• IndustrialandAutomotivetemperatureranges
• 8-pin PDIP, 8-pin SOIC, 8-pin TSSOP, and chip scale
packagesareavailable
The functional features of the IS25C08/16 allow them to
beamongthemostadvancedserialnon-volatilememo-
ries available. Each device has a Chip-Select (CS) pin,
and a 3-wire interface of Serial Data In (SI), Serial Data
Out (SO), and Serial Clock (SCK). While the 3-wire
interfaceoftheIS25C08/16providesforhigh-speed
access, a HOLD pin allows the memories to ignore the
interface in a suspended state; later the HOLD pin re-
activates communication without re-initializing the serial
sequence. A Status Register facilitates a flexible write
• Lead-freeavailable
protection mechanism, and a device-ready bit (RDY).
Copyright © 2006 Integrated Silicon Solution, Inc. All rights reserved. ISSI reserves the right to make changes to this specification and its products at any time
without notice. ISSI assumes no liability arising out of the application or use of any information, products or services described herein. Customers are advised to
obtain the latest version of this device specification before relying on any published information and before placing orders for products.
Integrated Silicon Solution, Inc. — 1-800-379-4774
1
PreliminaryInformation Rev. 00H
02/23/06