DESCRIPTION

× 8-bit electrically switchable configuration Access time 3.6 V power supply 90 ns MAX 3.6 V power supply 80 ns MAX Operating current 16 mA MAX (5MHz) Standby current 10 μA MAX Input/Output TTL compatible Three-state output

P2ROM stands for Production Programmed ROM. 

APPLICATION

This exclusive Oki technology utilizes factory test equipment for programming the customers code into the P2ROM prior to final production testing. Advancements in this technology allows production costs to be equivalent to MASKROM and has many advantages and added benefits over the other non-volatile technologies, which include the following;

Short lead time, since the P2ROM is programmed at the final stage of the production process, a large P2ROM inventory "bank system" of un-programmed packaged products are maintained to provide an aggressive lead-time and minimizes liability as a custom product. No mask charge, since P2ROMs do not utilize a custom mask for storing customer code, no mask charges apply. No additional programming charge, unlike Flash and OTP that require additional programming and handling costs, the P2ROM already has the code loaded at the factory with minimal effect on the production throughput. The cost is included in the unit price. Custom Marking is available at no additional charge. Pin Compatible with Mask ROM and some FLASH products.

In 8-bit output mode, these pins are placed in a high-Z state and pin D15 functions as the A-1 address pin.

Pin name to D14 CE# OE# BYTE# VCC VSS NC Functions Data output / Address input Address inputs Data outputs Chip enable input Output enable input Word / Byte select input Power supply voltage Ground No connect

Mode Read (16-Bit) Read (8-Bit) Output disable Standby CE# OE# L H BYTE# VCC to D7 DOUT to D14 DOUT Hi-Z D15/A-1 L/H

Parameter Operating temperature under bias Storage temperature Input voltage Output voltage Power supply voltage Power dissipation per package Output short circuit current Symbol Ta Tstg VI VO VCC PD IOS Condition Value 1.0 10 Unit °C mA

Parameter VCC power supply voltage Input "H" level Input "L" level

Voltage is relative to VSS. : Vcc+1.5V(Max.) when pulse width of overshoot is less than : -1.5V(Min.) when pulse width of undershoot is less than 10ns.

FEATURES

·8,388,608-word × 16-bit/16,777,216-word × 8-bit electrically

switchable configuration

· Access time

· MR27T12800J-xxxTN, MR27T12800J-xxxTY

· 2.7 V to 3.6 V power supply 90 ns MAX

· MR27T12800J-xxxTNE , MR27T12800J-xxxTYE

· 2.7 V to 3.0 V power supply 120 ns MAX

· 3.0 V to 3.6 V power supply 100 ns MAX

· Operating current 25 mA MAX(5MHz)

· Standby current 10 µA MAX

· Input/Output TTL compatible

· Three-state output 

SPECIFICATION

RELEVANT POPULAR RESEARCHES

PICTURE

MR27T12800J image