파트넘버.co.kr ST24FW21 데이터시트 PDF


ST24FW21 반도체 회로 부품 판매점

(ST24xx21B) 1 Kbit x8 Dual Mode Serial EEPROM



STMicroelectronics 로고
STMicroelectronics
ST24FW21 데이터시트, 핀배열, 회로
ST24LC21B, ST24LW21
ST24FC21, ST24FC21B, ST24FW21
1 Kbit (x8) Dual Mode Serial EEPROM
for VESA PLUG & PLAY
1 MILLION ERASE/WRITE CYCLES
40 YEARS DATA RETENTION
3.6V to 5.5V or 2.5V to 5.5V SINGLE SUPPLY
VOLTAGE
HARDWARE WRITE CONTROL (ST24LW21
and ST24FW21)
TTL SCHMITT-TRIGGER on VCLK INPUT
100k / 400k Hz COMPATIBILITY with the I2C
BUS BIT TRANSFER RANGE
TWO WIRE SERIAL INTERFACE I2C BUS
COMPATIBLE
I2C PAGE WRITE (up to 8 Bytes)
I2C BYTE, RANDOM and SEQUENTIAL READ
MODES
SELF TIMED PROGRAMMING CYCLE
AUTOMATIC ADDRESS INCREMENTING
ENHANCED ESD/LATCH UP
PERFORMANCES
ERROR RECOVERY MECHANISM
(ST24FC21 and ST24FW21) VESA 2
COMPATIBLE
DESCRIPTION
The ST24LC21B, ST24LW21, ST24FC21,
ST24FC21B and ST24FW21 are 1K bit electrically
erasable programmable memory (EEPROM), or-
ganized in 128x8 bits. In the text, products are
referred as ST24xy21, where "x" is either "L" for
VESA 1 or "F" for VESA 2 compatible memories
and where "y" indicates the Write Control pin con-
nection: "C" means WC on pin 7 and "W" means
WC on pin 3.
8
1
PSDIP8 (B)
0.25mm Frame
8
1
SO8 (M)
150mil Width
Figure 1. Logic Diagram
VCC
SCL
VCLK
WC
ST24xy21
SDA
Table 1. Signal Names
SDA
SCL
Serial Data Address Input/Output
Serial Clock (I2C mode)
VCC
VSS
VCLK
Supply Voltage
Ground
Clock Transmit only mode
WC Write Control
June 2002
VSS
AI01741
Note: WC signal is only available for ST24LW21 and ST24FW21
products.
1/22
Free Datasheet http://www.datasheet4u.net/


ST24FW21 데이터시트, 핀배열, 회로
ST24LC21B, ST24LW21, ST24FC21, ST24FC21B, ST24FW21
Figure 2A. DIP Pin Connections
Figure 2B. SO Pin Connections
ST24LC21B
NC
NC
NC
VSS
1
2
3
4
8 VCC
7 VCLK
6 SCL
5 SDA
AI01742
ST24LC21B
NC
NC
NC
VSS
18
27
36
45
AI01743
VCC
VCLK
SCL
SDA
Warning: NC = Not Connected.
Figure 2C. DIP Pin Connections
Warning: NC = Not Connected.
Figure 2D. SO Pin Connections
ST24FC21
ST24FC21B
NC
NC
DU
VSS
1
2
3
4
8 VCC
7 VCLK
6 SCL
5 SDA
AI01744
NC
NC
DU
VSS
ST24FC21
ST24FC21B
18
27
36
45
AI01745
VCC
VCLK
SCL
SDA
Warning: NC = Not Connected. DU = Don’t Use, must
be left open or connected to VCC or VSS.
Figure 2E. DIP Pin Connections
Warning: NC = Not Connected. DU = Don’t Use, must
be left open or connected to VCC or VSS.
Figure 2F. SO Pin Connections
ST24FW21
ST24LW21
NC
NC
WC
VSS
1
2
3
4
8 VCC
7 VCLK
6 SCL
5 SDA
AI01746
Warning: NC = Not Connected.
ST24FW21
ST24LW21
NC
NC
WC
VSS
18
27
36
45
AI01747
VCC
VCLK
SCL
SDA
Warning: NC = Not Connected.
2/22
Free Datasheet http://www.datasheet4u.net/




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1 Kbit x8 Dual Mode Serial EEPROM for VESA PLUG & PLAY - ST Microelectronics



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(ST24xx21B) 1 Kbit x8 Dual Mode Serial EEPROM - STMicroelectronics