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Home - Memory Products - 2K Devices - 24LCS22A Device, download datasheet
Download Datasheets 24LCS22A Device |
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 (1Kbit) and Bi-directional Mode (2Kbit). 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 I2C bus. If it detects a valid control byte from the master, it will switch into Bi-Directional 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 Transmit-Only Mode after it receives 128 consecutive VCLK pulses while the SCL pin is idle. The 24LCS22A is available in standard 8-pin DIP 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.
Datasheet and Other Documentation |
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Specification Chart
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Operat. Voltage |
E/W Cycles |
Density (Organ.) |
Write Speed |
Clock Speed |
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1.8V to 5.5V |
1M |
2K bits (x8) |
10 ms |
400 kHz |
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Additional Features |
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Similar to 24LC21A with an additional 1K bits of memory to support high end monitors. Plug n Play compatible. |
Package Options |
8 SOIC 150mil(SN), 8 PDIP(P) |
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