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M24256-WMW6T
M24256 M24128 256/128 Kbit Serial I²C Bus EEPROM Without Chip Enable Lines PRELIMINARY DATA s Compatible with I2C Extended Addressing s Two Wire I2C Serial Interface Supports 400 kHz Protocol s Single Supply Voltage: 8 – 4.5V to 5.5V for M24xxx – 2.5V to 5.5V for M24xxx-W s Hardware Write Control s BYTE and PAGE WRITE (up to 64 Bytes) s RANDOM and SEQUENTIAL READ Modes s Self-Timed Programming Cycle s Automatic Address Incrementing s Enhanced ESD/Latch-Up Behavior s 100,000 Erase/Write Cycles (minimum) s 40 Year Data Retention (minimum) DESCRIPTION These I 2C-compatible electrically erasable programmable memory (EEPROM) devices are organized as 32Kx8 bits (M24256) and 16Kx8 bits (M24128), and operate down to 2.5 V (for the -W version of each device). The M24256 and M24128 are available in Plastic Dual-in-Line and Plastic Small Outline packages. These memory devices are compatible with the I2C extended memory standard. This is a two wire serial interface that uses a bi-directional data bus and serial clock. The memory carries a built-in 4bit unique Device Type Identifier code (1010) in accordance with the I2C bus definition. 1 PSDIP8 (BN) 0.25 mm frame 8 8 1 1 SO8 (MN) 150 mil width SO8 (MW) 200 mil width Figure 1. Logic Diagram VCC SDA SCL M24256 M24128 Table 1. Signal Names SDA Serial Data/Address Input/ Output SCL Serial Clock WC Write Control VCC Supply Voltage VSS WC Ground VSS AI01882 November 1999 This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice. 1/16
STM
STMicroelectronics NV
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