NEC MultiSync V520 Service Manual

3. 2-wire serial CMOS E²ROPM
Outstanding Features
§ Internally Organized 512 × 8 (4K)
§ Two-wire Serial Interface
§ Bidirectional Data Transfer Protocol
§ Write Protect Pin for Hardware Data Protection
§ 16-byte Page Write Modes
§ Partial Page Writes Are Allowed
§ Self-timed Write Cycle (10 ms max)
Description
The AT24C04 provides 4096 bits of serial electrically erasable and programmable read only memory
(EEPROM) organized as words of 8 bits each. The device is available in space saving eight-pin PDIP and is
accessed via a two-wire serial interface. The AT24C04 is guaranteed for 100,000 erase/write cycles and
100 year data retention.
Pin Configurations
56
Pin Name Function
A0 to A2 Address Inputs
SDA Serial Data
SCL Serial Clock Input
WP Write Protect
NC No Connect
8-PIN PDIP
1
2
3
5
4
6
7
8
Vcc
WP
SCL
SDA
A0
A1
A2
GND
Block Diagram
SERIAL
CONTROL
LOGIC
START
STOP
LOGIC
H.V. PUMP/TIMING
DATA RECOVERY
E²PROM
H.V. PUMP/TIMING
X DEC
D
OUT
/ACK
LOGIC
DEVICE
ADDRESS
COMPARATOR
DATA WORD
ADDR/COUNTER
Y DEC
V
CC
GND
WP
SCL
SDA
A
2
A
1
A
0
D
IN
D
OUT
R/W
LOAD
COMP
LOAD
INC
EN

NEC MultiSync V520 Specifications

General

Brand	NEC
Model	MultiSync V520
Category	Monitor
Language	English