X28HC64 Просмотр технического описания (PDF) - Renesas Electronics
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X28HC64 Datasheet PDF : 18 Pages
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X28HC64
64k, 8k x 8-Bit 5 Volt, Byte Alterable EEPROM
The X28HC64 is an 8k x 8 EEPROM, fabricated with Intersil’s
proprietary, high performance, floating gate CMOS technology.
Like all Intersil programmable nonvolatile memories, the
X28HC64 is a 5V only device. It features the JEDEC approved
pinout for byte-wide memories, compatible with industry
standard RAMs.
The X28HC64 supports a 64-byte page write operation, effectively
providing a 32µs/byte write cycle, and enabling the entire
memory to be typically written in 0.25 seconds. The X28HC64
also features DATA Polling and Toggle Bit Polling, two methods
providing early end of write detection. In addition, the X28HC64
includes a user-optional software data protection mode that
further enhances Intersil’s hardware write protect capability.
Intersil EEPROMs are designed and tested for applications
requiring extended endurance. Inherent data retention is
greater than 100 years.
Pin Configurations
X28HC64
(28 LD PDIP, SOIC)
TOP VIEW
NC 1
28 VCC
A12
2
27 WE
A7 3
26 NC
A6 4
25 A8
A5 5
24 A9
A4 6
23 A11
A3 7 X28HC64 22 OE
A2 8
21 A10
A1 9
20 CE
A0 10
19 I/O7
I/O0 11
18 I/O6
I/O1 12
17 I/O5
I/O2 13
16 I/O4
VSS 14
15 I/O3
DATASHEET
FN8109
Rev 4.00
June 27, 2016
Features
• 70ns access time
• Simple byte and page write
- Single 5V supply
- No external high voltages or VP-P control circuits
- Self-timed
- No erase before write
- No complex programming algorithms
- No overerase problem
• Low power CMOS
- 40mA active current maximum
• 200µA standby current maximum
• Fast write cycle times
- 64-byte page write operation
- Byte or page write cycle: 2ms typical
- Complete memory rewrite: 0.25s typical
- Effective byte write cycle time: 32µs typical
• Software data protection
• End of write detection
- DATA polling
- Toggle bit
• High reliability
- Endurance: 100,000 cycles
- Data retention: 100 years
• JEDEC approved byte-wide pinout
• Pb-free available (RoHS compliant)
X28HC64
(32 LD PLCC)
TOP VIEW
4 3 2 1 32 31 30
A6 5
29 A8
A5 6
28 A9
A4 7
27 A11
A3 8
A2 9
X28HC64
26 NC
25 OE
A1 10
24 A10
A0 11
23 CE
NC 12
22 I/O7
I/O0
13
21
14 15 16 17 18 19 20
I/O6
FN8109 Rev 4.00
June 27, 2016
Page 1 of 18
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