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24LC41A-I/P

Description
1K/4K 2.5V Dual Mode, Dual Port I2C⑩ Serial EEPROM
Categorystorage    storage   
File Size152KB,18 Pages
ManufacturerMicrochip
Websitehttps://www.microchip.com
Environmental Compliance
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24LC41A-I/P Overview

1K/4K 2.5V Dual Mode, Dual Port I2C⑩ Serial EEPROM

24LC41A-I/P Parametric

Parameter NameAttribute value
Is it lead-free?Lead free
Is it Rohs certified?conform to
Parts packaging codeDIP
package instructionDIP, DIP8,.3
Contacts8
Reach Compliance Codecompli
ECCN codeEAR99
Other featuresALSO CONTAINS 128 X 8 BIT MEMORY BLOCK
Maximum clock frequency (fCLK)0.1 MHz
Data retention time - minimum40
Durability10000000 Write/Erase Cycles
I2C control byte1010XXMR/1010000R
JESD-30 codeR-PDIP-T8
JESD-609 codee3
length9.4 mm
memory density4096 bi
Memory IC TypeEEPROM
memory width8
Number of functions1
Number of ports2
Number of terminals8
word count512 words
character code512
Operating modeSYNCHRONOUS
Maximum operating temperature85 °C
Minimum operating temperature-40 °C
organize512X8
Package body materialPLASTIC/EPOXY
encapsulated codeDIP
Encapsulate equivalent codeDIP8,.3
Package shapeRECTANGULAR
Package formIN-LINE
Parallel/SerialSERIAL
Peak Reflow Temperature (Celsius)NOT SPECIFIED
power supply3/5 V
Certification statusNot Qualified
Maximum seat height4.06 mm
Serial bus typeI2C
Maximum standby current0.00006 A
Maximum slew rate0.003 mA
Maximum supply voltage (Vsup)5.5 V
Minimum supply voltage (Vsup)2.5 V
Nominal supply voltage (Vsup)2.7 V
surface mountNO
technologyCMOS
Temperature levelINDUSTRIAL
Terminal surfaceMatte Tin (Sn)
Terminal formTHROUGH-HOLE
Terminal pitch2.54 mm
Terminal locationDUAL
Maximum time at peak reflow temperatureNOT SPECIFIED
width7.62 mm
Maximum write cycle time (tWC)10 ms
write protectHARDWARE
Base Number Matches1
24LC41A
1K/4K 2.5V Dual Mode, Dual Port I
2
C™ Serial EEPROM
Features
• Single supply with operation down to 2.5V
• Completely implements DDC1/DDC2 interface
for monitor identification, including recovery to
DDC1
• Improved noise immunity
• Separate high speed 2-wire bus for
microcontroller access to 4K-bit Serial EEPROM
• Low-power CMOS technology
• 2 mA active current typical
• 20
µA
standby current typical at 5.5V
• Dual 2-wire serial interface bus, I
2
C
compatible
• Hardware write-protect for Microcontroller Access
Port
• Self-timed write cycle (including auto-erase)
• Page write buffer for up to 8 bytes (DDC port) or
16 bytes (4K Port)
• 100 kHz (2.5V) and 400 kHz (5V) compatibility
• 1,000,000 erase/write cycles
• Data retention > 40 years
• 8-pin PDIP package
• Available for extended temperature ranges
- Commercial (C):
0°C to
+70°C
- Industrial (I):
-40°C to
+85°C
The 4K-bit microcontroller port is completely indepen-
dent of the DDC port, therefore, it can be accessed
continuously by a microcontroller without interrupting
DDC transmission activity. The 24LC41A is available in
a standard 8-pin PDIP package in both commercial and
industrial temperature ranges.
Package Type
PDIP
DSCL
VCLK
V
SS
MSDA
1
8
DSDA
Vcc
MWP
MSCL
24LC41A
2
3
4
7
6
5
Block Diagram
DDC Monitor Port
DSDA
EDID Table
1K-Bit
VCLK
DSCL
Microcontroller Access Port
MSDA
4K-Bit
Serial
EEPROM
Description
The Microchip Technology Inc. 24LC41A is a dual port
128 x 8 and 512 x 8-bit Electrically Erasable PROM
(EEPROM). This device is designed for use in applica-
tions requiring storage and serial transmission of
configuration and control information. Three modes of
operation have been implemented:
• Transmit-only mode for the DDC Monitor Port
• Bidirectional mode for the DDC Monitor Port
• Bidirectional, industry-standard 2-wire bus for the
4K Microcontroller Access Port
Upon power-up, the DDC Monitor Port will be in the
Transmit-only mode, repeatedly sending a serial bit
stream of the entire memory array contents, clocked by
the VCLK pin. A valid high-to-low transition on the
DSCL pin will cause the device to enter the transition
mode, an look for a valid control byte on the I
2
C bus. If
it detects a valid control byte from the master, it will
switch to Bidirectional mode, with byte selectable read/
write capability of the memory array using DSCL. If no
control byte is received, the device will revert to the
Transmit-only mode after it received 128 consecutive
VCLK Package Type pulses while the DSCL pin is idle.
MSCL
Pin Function Table
Name
DSCL
DSDA
VCLK
MSCL
MSDA
MWP
V
SS
V
CC
Function
Serial Clock for DDC Bidirectional mode
(DDC2)
Serial Address and Data I/O(DDC Bus)
Serial Clock for DDC Transmit-only mode
(DDC1)
Serial clock for 4K-bit MCU port
Serial Address and Data I/O for 4K-bit MCU port
Hardware write-protect for Microcontroller
Access Port
Ground
+2.5V to +5.5V power supply
I
2
C is a trademark of Philips Corporation.
DDC is a trademark of Video Electronics Standards Association.
2003 Microchip Technology Inc.
DS21176D-page 1

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