Marantz DV4100F, Service Manual

Page: 140 / 145

IC Descriptions.
GB 83 ASD-1 9.
ST24E32
ST25E32
32K SERIAL I
2
C EEPROM
with EXTENDED ADDRESSING
NOT FOR NEW DESIGN
AI01201B
3
E0-E2 SDA
VCC
ST24E32
ST25E32
WC
SCL
VSS
Figure 1. Logic Diagram
COMPATIBLE with I
2
C EXTENDED
ADDRESSING
TWO WIRE SERIAL INTERFACE,
SUPPORTS 400kHz PROTOCOL
1 MILLION ERASE/WRITE CYCLES, OVER
the FULL SUPPLY VOLTAGE RANGE
40 YEARS DATA RETENTION
SINGLE SUPPLY VOLTAGE
± 4.5V to 5.5V for ST24E32 version
± 2.5V to 5.5V for ST25E32 version
WRITE CONTROL FEATURE
BYTE and PAGE WRITE (up to 32 BYTES)
BYTE, RANDOM and SEQUENTIAL READ
MODES
SELF TIMED PROGRAMING CYCLE
AUTOMATIC ADDRESS INCREMENTING
ENHANCED ESD/LATCH UP
PERFORMANCES
ST24E32 and ST25E32 are replaced by the
M24C32
DESCRIPTION
The ST24/25E32 are 32K bit electrically erasable
programmable memories (EEPROM), organized
as 8 blocks of 512 x 8 bits. The ST25E32 operates
with a power supply value as low as 2.5V. Both
Plastic Dual-in-Line and Plastic Small Outline pack-
ages are available.
E0 - E2 Chip Enable Inputs
SDA Serial Data Address Input/Output
SCL Serial Clock
WC Write Control
V
CC
Supply Voltage
V
SS
Ground
Table 1. Signal Names
8
1
SO8 (M)
200mil Width
8
1
PSDIP8 (B)
0.25mm Frame