24LCS21A Data Sheet

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  24LCS21A Data Sheet

The Microchip Technology Inc. 24LCS21A is a 128 x 8-bit dual-mode Electrically Erasable PROM. 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 and Bidirectional mode. Upon power-up, the device will be in the Transmit-Only mode, a valid high-to-low transition on the SCLpin will cause the device to enter the Transition mode and look for a valid control byte on the I2C™Compatible 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 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 24LCS21A also enables the user to write-protect the entire memory array using its write-protect pin. The 24LCS21A is available in a standard 8-pin PDIP and SOIC package in industrial temperature range.

参数名称  数值
Density  1K bits (x8)
Max. Clock Freq.  400 kHz
Page Size (bytes)  8
Write Protect  Whole Array
Endurance  1,000,000
Op. Volt Range (V)  2.5 to 5.5
Temp Range (°C)  -40°C to +85°C  

     特性
Single Supply with Operation Down to 2.5V
Completely Implements DDC1™/DDC2™ Interface
for Monitor Identification, Including Recovery
to DDC1
Low-Power CMOS Technology:
    - 1 mA active current, typical
    - 10 uA standby current, typical at 5.5V
2-Wire Serial Interface Bus, I2C™ 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 Ensured
Data Retention > 200 years
ESD Protection > 4000V
8-pin PDIP and SOIC Package
Available for Extended Temperature Ranges:
- Industrial (I): -40°C to +70°C
Pb-Free and RoHS Compliant


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