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24LCS21IP Datasheet

  • 24LCS21IP

  • I2C Serial EEPROM

  • 12頁(yè)

  • ETC

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24LCS21
1K 2.5V Dual Mode I
2
C
鈩?/div>
Serial EEPROM
FEATURES
鈥?Completely implements DDC1
鈩?/div>
/DDC2
鈩?/div>
interface for monitor identi鏗乧ation
鈥?Hardware write-protect pin
鈥?Single supply with operation down to 2.5V
鈥?Low power CMOS technology
- 1 mA active current typical
- 10
碌
A standby current typical at 5.5V
鈥?2-wire serial interface bus, I
2
C
鈩?/div>
compatible
(SCL)
鈥?Self-timed write cycle (including auto-erase)
鈥?Page-write buffer for up to 8 bytes
鈥?100 kHz (2.5V) and 400 kHz (5V) compatibility
(SCL)
鈥?1,000,000 erase/write cycles guaranteed
鈥?Data retention > 200 years
鈥?8-pin PDIP and SOIC package
鈥?Available for extended temperature ranges
- Commercial
0擄C to +70擄C
(C):
- Industrial (I)
-40擄C to +85擄C
PACKAGE TYPES
PDIP
NC
NC
WP
V
SS
SOIC
NC
NC
WP
V
SS
1
24LCS21
24LCS21
2
3
4
8
7
6
5
V
CC
VCLK
SCL
SDA
1
2
3
4
8
7
6
5
V
CC
VCLK
SCL
SDA
DESCRIPTION
The Microchip Technology Inc. 24LCS21 is a
128 x 8-bit dual-mode Electrically Erasable PROM.
This device is designed for use in applications requiring
storage and serial transmission of con鏗乬uration and
control information. Two modes of operation have been
implemented: Transmit Only Mode and bi-directional
Mode. Upon power-up, the device will be in the
Transmit Only Mode, sending a serial bit stream of the
entire memory array contents, clocked by the VCLK
pin. A valid high to low transition on the SCL pin will
cause the device to enter the bi-directional Mode, with
byte selectable read/write capability of the memory
array in standard I
2
C protocol.
The 24LCS21 also enables the user to write-protect the
entire memory contents using its write-protect pin. The
24LCS21 is available in a standard 8-pin PDIP and
SOIC package in both commercial and industrial
temperature ranges.
BLOCK DIAGRAM
WP
HV GENERATOR
I/O
CONTROL
LOGIC
MEMORY
CONTROL
LOGIC
XDEC
EEPROM
ARRAY
PAGE LATCHES
SDA SCL
YDEC
VCLK
SENSE AMP
R/W CONTROL
V
CC
V
SS
DDC is a trademark of the Video Electronics Standards Association.
I
2
C is a trademark of Philips Corporation.
漏
1999 Microchip Technology Inc.
This Material Copyrighted by Its Respective Manufacturer
DS21127D-page 1

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