4 Megabit (512kx8/256kx16) 5 Volt-only Flash Memory

The HY29F400 is a 4 Megabit, 5 volt only CMOS Flash memory organized as 524,288 (512K) bytes or 262,144 (256K) words. The device is offered in industry-standard 44-pin PSOP and 48-pin TSOP packages. The HY29F400 CAN be programmed and erased in-system with a single 5-volt VCC supply. Inter- nally generated and regulated voltages are pro- vided for program and erase operations, so that the device does not require a high voltage power supply to perform those functions. The device CAN also be programmed in standard EPROM pro- grammers. Access times as fast as 55 ns over the full operating voltage range of 5.0 volts 10% are offered for Timing compatibility with the zero wait state requirements of high speed micropro- cessors. A 55 ns version operating over 5.0 volts 5% is also available. To eliminate bus conten- tion, the HY29F400 has separate chip enable (CE#), write enable (WE#) and output enable (OE#) controls. The device is compatible with the JEDEC single power-supply Flash command set standard. Com- mands are written to the command Register using standard Microprocessor write Timings from where they are routed to an internal state-machine that controls the erase and programming circuits. Device programming is performed a byte or word at a time by executing the four-cycle Program com- mand. This initiates an internal algorithm that au- tomatically times the program pulse widths and verifies proper cell margin. By Hynix Semiconductor
HY29F400 's PackagesHY29F400 's pdf datasheet

HY29F400 Pinout, Pinouts
HY29F400 pinout,Pin out
This is one package pinout of HY29F400,If you need more pinouts please download HY29F400's pdf datasheet.

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