24LC41A
24LC41A is Serial EEPROM manufactured by Microchip Technology.
Features
- Single supply with operation down to 2.5V
- pletely 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 m A active current typical
- 20 µA standby current typical at 5.5V
- Dual 2-wire serial interface bus, I2C™ patible
- 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 k Hz (2.5V) and 400 k Hz (5V) patibility
- 1,000,000 erase/write cycles
- Data retention > 40 years
- 8-pin PDIP package
- Available for extended temperature ranges
- mercial (C):
- Industrial (I):
0°C to +70°C -40°C to +85°C
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 applications 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 I2C 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.
The 4K-bit...
