SPI bus 256Kbit Serial CMOS EEPROM

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The AK6516C is a 262144-bit, serial, read/write, non-volatile memory device fabricated using an advanced CMOS EEPROM technology.

The AK6516C has 262144-bits of memory organized as 32768 registers of 8 bits each.

The AK6516C can operate all function under wide operating voltage range: 1.6V to 5.5V. The charge up circuit for high voltage

generation needed for write operations is integrated.

The AK6516C serial interface is compatible to a SPI bus. The AK6516C has 6 instructions: READ, WRITE, WREN (write enable),

WRDI (write disable), RDSR (read status register), and WRSR (write status register).

Each instruction is organized by an op-code (8bits), address (16bits), and data (8bits). When input level of CSB pin changed from

high level to low level, AK6516C can receive instructions.

Key Features

□ Single Voltage Supply: 1.6V to 5.5V

□ 256Kbits; 32768 × 8 organization

□ SPI Serial Interface Compatible

□ Low Power Consumption

    0.8μA Max. (Standby mode)

□ High Reliability

    Endurance: 100K E/W cycles / Address

    Data Retention: 10 Years

□ Special Features

    64 byte Page Write Mode

    Block Write Protection (Protect 1/4,1/2 or Entire Array)

    Automatic write cycle time-out with auto-ERASE

□ Software and Hardware controlled Write Protection

□ Self timed Programming Cycle: 5msec. Max.

□ 8pin SOP

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Block Diagram

Block Diagram

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