TK29H400AT Flash Memory

General Description

The TK29H400A is a 4-Megabit, electrically erasable, read/write non-volatile flash memory, organized as 524,288 bytes or 256,144 words.

This part is an up-screen of a flash memory made by ESMT. Functionally, the Tekmos part behaves identically to the ESMT flash memory. Physically, the ESMT die have been packaged in a 56-pin ceramic flat pack, using aluminum wire for increased reliability, and using high temperature assembly techniques. Electrically, each part is completely tested at 175oC to insure that all electrical parameters are met.

The TK29H400A has also been qualified according to the procedures in the JESD-22_A117E specification. The operation at elevated temperatures reduces both the data retention time and the number of Erase / Program cycles. However, the data retention time can be extended indefinitely through the use of periodic refresh cycles.

The TK29H400A is offered in a 56-pin ceramic flatpack, using a JEDEC standard pinout.

Features

4MB Non-volatile Flash Memory
-40ºC to +175ºC operation
Organized as 512Kx8 or 256kx18
Fast Read access Time = 90 ns.
Flash Electrical Chip-Erase
- 3 Second Typical Chip-Erase
Quick Programming Algorithm
- 10 μs Typical Byte-Program
- 12.5 Second Chip-Program
2.7-3.6V single power supply operation
100,000 Erase/Program Cycles at 85ºC
Flexible sector architecture
- One 16 K-Byte, two 8K-byte, one 32K byte, and seven 64K-byte sectors in byte mode
- One 8 K-word, two 4K-word, one 16K word, and seven 32K-word sectors in word mode
10 year data retention @ 85ºC
CMOS Low Power Consumption
- 10 mA Typical Active Current
- 50 μA Typical Standby Current
Command Register Architecture for Microprocessor/Microcontroller Compatible Write Interface
Great Noise Immunity Features
- ±10% VCC Tolerance
Safely abort Erase or Program sequence at any time including Integrated Program/Erase Stop Timer
Protection against inadvertent programming during power up
JEDEC-Standard Pinouts
- 56-Pin Ceramic Flat-Pack