X28HC256_15 Datasheet, PDF (1/19 Pages) Intersil Corporation – 256k, 32k x 8-Bit, 5V, Byte Alterable EEPROM

DATASHEET
256k, 32k x 8-Bit, 5V, Byte Alterable EEPROM
X28HC256
The X28HC256 is a second generation high performance
CMOS 32k x 8 EEPROM. It is fabricated with Intersil’s
proprietary, textured poly floating gate technology, providing a
highly reliable 5V only nonvolatile memory.
The X28HC256 supports a 128-byte page write operation,
effectively providing a 24µs/byte write cycle, and enabling the
entire memory to be typically rewritten in less than 0.8s. The
X28HC256 also features DATA polling and Toggle bit polling,
two methods of providing early end of write detection. The
X28HC256 also supports the JEDEC standard software data
protection feature for protecting against inadvertent writes
during power-up and power-down.
Endurance for the X28HC256 is specified as a minimum
100,000 write cycles per byte and an inherent data retention
of 100 years.
Features
• Access time: 90ns
• Simple byte and page write
- Single 5V supply
- No external high voltages or V_P-P control circuits
- Self timed
- No erase before write
- No complex programming algorithms
- No overerase problem
• Low power CMOS
- Active: 60mA
- Standby: 500µA
• Software data protection
- Protects data against system level inadvertent writes
• High speed page write capability
• Highly reliable Direct Write^™ cell
- Endurance: 100,000 cycles
- Data retention: 100 years
• Early end of write detection
- DATA polling
- Toggle bit polling
• RoHS compliant
August 27, 2015
FN8108.5
A₀ TO A₁₄
ADDRESS
INPUTS
CE
OE
WE
V_CC
V_SS
X BUFFERS
LATCHES AND
DECODER
256k BIT
EEPROM
ARRAY
Y BUFFERS
LATCHES AND
DECODER
CONTROL
LOGIC AND
TIMING
I/O BUFFERS
AND LATCHES
I/O₀ TO I/O₇
DATA INPUTS/OUTPUTS
FIGURE 1. BLOCK DIAGRAM
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Copyright Intersil Americas LLC 2005-2007, 2010, 2011, 2015. All Rights Reserved
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
All other trademarks mentioned are the property of their respective owners.