W49V002FA

Publication Release Date: February 19, 2002

- 5 -

Revision A2

In addition to data polling, the W49V002FA provides another method for determining the end of a

produce alternating 0's and 1's. When the program or erase cycle is completed, this toggling between

0's and 1's will stop. The device is then ready for the next operation.

General Purpose Inputs Register

This register reads the FGPI[4:0] pins on the W49V002FA.This is a pass-through register which can

read via memory address FFBC0100(hex). Since it is pass-through register, there is no default value.

BIT

FUNCTION

7

− 5

Reserved

4

Read FGPI4 pin status

3

Read FGPI3 pin status

2

Read FGPI2 pin status

1

Read FGPI1 pin status

0

Read FGPI0 pin status

Product Identification

The product ID operation outputs the manufacturer code and device code. Programming equipment

automatically matches the device with its proper erase and programming algorithms.

The manufacturer and device codes can be accessed by software operation. In the software access

mode, a six-byte (or JEDEC 3-byte) command sequence can be used to access the product ID for

programmer interface mode. A read from address 0000(hex) outputs the manufacturer code, DA(hex).

A read from address 0001(hex) outputs the device code, 32(hex).” The product ID operation can be

terminated by a three-byte command sequence or an alternate one-byte command sequence (see

Command Definition table).

As for FWH interface mode, a read from FFBC, 0000(hex) can output the manufacturer code,

DA(hex). A read from FFBC, 0001(hex) can output the device code 32(hex).

TABLE OF OPERATING MODES

Operating Mode Selection - Programmer Mode

± 5%)

MODE

PINS

#OE

#WE

#RESET

ADDRESS

DQ.

Read

AIN

Dout

Write

AIN

Din

Standby

X

X

X

High Z

Write Inhibit

X

X

High Z/DOUT

X

X

High Z/DOUT

Output Disable

X

X

High Z