IS25C02
FEATURES
• Serial Peripheral Interface (SPI) Compatible
— Supports SPI Modes 0 (0,0) and 3 (1,1)
• Low-voltage Operation
— Vcc = 1.8V to 5.5V
• Low power CMOS
— Active current less than 3.0 mA (2.5V)
— Standby current less than 1 μA (2.5V)
• Block Write Protection
— 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 max. @ 2.5V
• High-reliability
— Endurance: 1 million cycles per byte
— Data retention: 100 years
• 8-pin PDIP, 8-pin SOIC, and 8-pin TSSOP packages
are available
• Lead-free available
DESCRIPTION
The IS25C02 and IS25C04 are electrically erasable
PROM devices that use the Serial Peripheral Interface
(SPI) for communications. The IS25C02 is 2Kbit
(256x 8) and the IS25C04 is 4Kbit (512x 8). The
IS25C02/04 EEPROMs are offered in a wide operating
voltage range of 1.8V to 5.5V to be compatible with
most application voltages. ISSI designed the IS25C02/
04 to be an efficient SPI EEPROM solution. The
devices are packaged in 8-pin PDIP, 8-pin SOIC, and 8-
pin TSSOP.
The functional features of the IS25C02/04 allow them to
be among the most advanced serial non-volatile memories
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
interface of the IS25C02/04 provides for high-speed
access, a HOLD pin allows the memories to ignore the
interface in a suspended state; later the HOLD pin reactivates
communication without re-initializing the serial
sequence. A Status Register facilitates a flexible write
protection mechanism, and a device-ready bit (RDY).
