at24hc04b ATMEL Corporation, at24hc04b Datasheet
at24hc04b
Manufacturer Part Number
at24hc04b
Description
Two-wire Serial Eeprom 4k 512 X 8
Manufacturer
ATMEL Corporation
Datasheet
1.AT24HC04B.pdf
(21 pages)
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Features
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Description
The AT24HC04B provides 4096 bits of serial electrically erasable and programmable
read-only memory (EEPROM) organized as 512 words of 8 bits each. The device is
optimized for use in many industrial and commercial applications where low-power
and low-voltage operation are essential. The AT24HC04B is available in space-saving
8-lead PDIP, 8-lead JEDEC SOIC and 8-lead TSSOP packages and is accessed via a
two-wire serial interface. In addition, the entire family is available in 1.8V (1.8V to
5.5V) version.
Table 0-1.
Pin Name
A0–A2
SDA
SCL
WP
NC
Write Protect Pin for Hardware Data Protection
Low-voltage and Standard-voltage Operation
Internally Organized 512 x 8 (4K)
Two-wire Serial Interface
Schmitt Trigger, Filtered Inputs for Noise Suppression
Bidirectional Data Transfer Protocol
1 MHz (5V) and 400 kHz (1.8V, 2.5V, 2.7V) Clock Rate
16-byte Page
Partial Page Writes Allowed
Self-timed Write Cycle (5 ms Max)
High Reliability
8-lead PDIP, 8-lead JEDEC SOIC and 8-lead TSSOP Packages
Die Sales: Wafer Form, Tape and Reel, and Bumped Wafers
– Utilizes Different Array Protection Compared to the AT24C04B
– 1.8 (V
– Endurance: One Million Write Cycles
– Data Retention: 100 Years
CC
= 1.8V to 5.5V)
Pin Configuration
Function
Address Inputs
Serial Data
Serial Clock Input
Write Protect
No-connect
GND
A0
A1
A2
GND
GND
A0
A1
A2
A0
A1
A2
8-lead TSSOP
8-lead SOIC
8-lead PDIP
1
2
3
4
1
2
3
4
1
2
3
4
8
7
6
5
8
7
6
5
8
7
6
5
VCC
WP
SCL
SDA
VCC
WP
SCL
SDA
VCC
WP
SCL
SDA
Two-wire Serial
EEPROM
4K (512 x 8)
AT24HC04B
5227D–SEEPR–1/08
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