24LCS22A-I/SN Microchip Technology Inc., 24LCS22A-I/SN Datasheet

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24LCS22A-I/SN

Manufacturer Part Number
24LCS22A-I/SN
Description
2K VESA E-EDID SERIAL EEPROM, IND
Manufacturer
Microchip Technology Inc.
Datasheet

Specifications of 24LCS22A-I/SN

Capacitance, Input
10 pF
Capacitance, Output
10 pF
Current, Input, Leakage
±1 μA
Current, Operating
1 mA (Read), 3 mA (Write)
Current, Output, Leakage
±1
Data Retention
>200 yrs.
Density
2K
Interface
2-Wire
Memory Type
Serial EEPROM
Organization
256×8
Package Type
SOIC
Temperature, Operating
-40 to +85 °C
Time, Access
3500 ns
Time, Fall
300 ns
Time, Rise
1000 ns
Voltage, Esd
≥4 kV
Voltage, Input, High
1.75 V
Voltage, Input, Low
0.75 V
Voltage, Output, Low
0.5 V
Voltage, Supply
2.5 to 5.5 V
Lead Free Status / Rohs Status
RoHS Compliant part Electrostatic Device
Features:
• Single Supply with Operation Down to 2.5V
• Supports Enhanced EDID
• Completely Implements DDC1
• 2 Kbit Serial EEPROM Low-Power CMOS
• 2-Wire Serial Interface Bus, I
• 100 kHz (2.5V) and 400 kHz (5V) Compatibility
• Self-Timed Write Cycle (including Auto-Erase)
• Hardware Write-Protect Pin
• Page Write Buffer for up to Eight Bytes
• 1,000,000 Erase Write Cycles
• Data Retention >200 years
• ESD Protection >4000V
• 8-pin PDIP and SOIC Packages
• Available Temperature Ranges:
• Pb-Free and RoHS Compliant
Description:
The Microchip Technology Inc. 24LCS22A is a 256 x 8-bit
dual-mode Electrically Erasable PROM (EEPROM). This
device is designed for use in applications requiring
storage and serial transmission of configuration and
control information. Two modes of operation have been
implemented:
Bidirectional mode (2 Kbit). Upon power-up, the device
will be in the Transmit-Only mode, sending a serial bit
stream of the memory array from 00h to 7Fh, clocked by
the VCLK pin. A valid high-to-low transition on the SCL pin
will cause the device to enter the Transition mode, and
look for a valid control byte on the I
valid control byte from the master, it will switch into
Bidirectional mode, with byte selectable read/write
capability of the entire 2K memory array using SCL. If no
control byte is received, the device will revert to the Trans-
mit-Only mode after it receives 128 consecutive VCLK
pulses while the SCL pin is idle. The 24LCS22A is avail-
able in standard 8-pin PDIP and SOIC packages. The
24LCS22A features a flexible write-protect pin which is
enabled by writing to address 7Fh (usually the checksum
in VESA
© 2008 Microchip Technology Inc.
face for Monitor Identification, including Recovery
to DDC1
Technology:
- 1 mA active current, typical
- 10 μA standby current, typical at 5.5V
- Industrial (I)
®
applications.
Transmit-Only
-40°C
2K VESA
to +85°C
(E-EDID
2
mode
C
2
/DDC2
C bus. If it detects a
Compatible
(1
®
) 1.3
Inter-
Kbit)
E-EDID
and
Package Types
Block Diagram
Serial EEPROM
SDA
PDIP/SOIC
Vcc
Vss
* Pins labeled ‘NC’ have no internal connection
Control
VCLK
Logic
I/O
SCL
24LCS22A
*NC
*NC
V
WP
SS
Control
Memory
Logic
WP
1
2
3
4
XDEC
8
7
6
5
DS21682D-page 1
V
VCLK
SCL
SDA
Page Latches
HV Generator
R/W Control
CC
Sense Amp.
EEPROM
Array
YDEC

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24LCS22A-I/SN Summary of contents

Page 1

... SCL control byte is received, the device will revert to the Trans- mit-Only mode after it receives 128 consecutive VCLK pulses while the SCL pin is idle. The 24LCS22A is avail- able in standard 8-pin PDIP and SOIC packages. The 24LCS22A features a flexible write-protect pin which is enabled by writing to address 7Fh (usually the checksum ® ...

Page 2

... ELECTRICAL CHARACTERISTICS (†) Absolute Maximum Ratings V .............................................................................................................................................................................7.0V CC All inputs and outputs w.r.t. V ......................................................................................................... -0. Storage temperature ...............................................................................................................................-65°C to +150°C Ambient temperature with power applied ................................................................................................-40°C to +125°C ESD protection on all pins ......................................................................................................................................................≥ † Notice: Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the device ...

Page 3

... Units Conditions 2.5V ≤ V ≤ 5.5V kHz CC 4.5V ≤ V ≤ 5.5V CC 2.5V ≤ V ≤ 5. 4.5V ≤ V ≤ 5.5V CC 2.5V ≤ V ≤ 5. 4.5V ≤ V ≤ ...

Page 4

... Microchip Technology Inc. 24LCS22A PP %RG\ >62,&@ α φ β DS21682D-page 17 ...

Page 5

... DS21682D-page 18 PP %RG\ >62,&@ © 2008 Microchip Technology Inc. ...

Page 6

... Package Plastic DIP (300 mil Body), 8-Lead SN = Plastic SOIC (3.90 mm Body), 8-Lead © 2008 Microchip Technology Inc. 24LCS22A . Examples: a) 24LCS22A-I/P: Industrial temperature, PDIP package. b) 24LCS22A-I/SN: Industrial temperature, SOIC package. c) 24LCS22AT-I/SN:Tape and Reel, Industrial temperature, SOIC package. DS21682D-page 23 ...

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