24LCS22A-I/SN

Manufacturer Part Number24LCS22A-I/SN
Description2K VESA E-EDID SERIAL EEPROM, IND
ManufacturerMicrochip Technology Inc.
24LCS22A-I/SN datasheet
 


Specifications of 24LCS22A-I/SN

Capacitance, Input10 pFCapacitance, Output10 pF
Current, Input, Leakage±1 μACurrent, Operating1 mA (Read), 3 mA (Write)
Current, Output, Leakage±1Data Retention>200 yrs.
Density2KInterface2-Wire
Memory TypeSerial EEPROMOrganization256×8
Package TypeSOICTemperature, Operating-40 to +85 °C
Time, Access3500 nsTime, Fall300 ns
Time, Rise1000 nsVoltage, Esd≥4 kV
Voltage, Input, High1.75 VVoltage, Input, Low0.75 V
Voltage, Output, Low0.5 VVoltage, Supply2.5 to 5.5 V
Lead Free Status / Rohs StatusRoHS Compliant part Electrostatic Device  
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2K VESA
Features:
• Single Supply with Operation Down to 2.5V
• Supports Enhanced EDID
(E-EDID
• Completely Implements DDC1
/DDC2
face for Monitor Identification, including Recovery
to DDC1
• 2 Kbit Serial EEPROM Low-Power CMOS
Technology:
- 1 mA active current, typical
- 10 μA standby current, typical at 5.5V
2
• 2-Wire Serial Interface Bus, I
C
Compatible
• 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:
- Industrial (I)
-40°C
to +85°C
• 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:
Transmit-Only
mode
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
2
look for a valid control byte on the I
C bus. If it detects a
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
applications.
© 2008 Microchip Technology Inc.
24LCS22A
®
E-EDID
Serial EEPROM
Package Types
PDIP/SOIC
) 1.3
Inter-
*NC
*NC
WP
V
SS
* Pins labeled ‘NC’ have no internal connection
Block Diagram
I/O
Control
Logic
SDA
SCL
VCLK
Vcc
Vss
(1
Kbit)
and
1
8
V
CC
2
7
VCLK
3
6
SCL
4
5
SDA
WP
HV Generator
Memory
EEPROM
Control
Array
XDEC
Logic
Page Latches
YDEC
Sense Amp.
R/W Control
DS21682D-page 1

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 ...