PIN DESCRIPTION
LOGIC SYMBOL
A21–A0
= 22 Addresses
22
DQ14–DQ0 = 15 Data Inputs/Outputs (x16-only de-
vices)
A21–A0
16 or 8
DQ15–DQ0
(A-1)
DQ15/A-1
= DQ15 (Data Input/Output, word
mode), A-1 (LSB Address Input, byte
mode)
CE#
OE#
CE#
OE#
WE#
= Chip Enable
= Output Enable
= Write Enable
WE#
WP#/ACC
RESET#
BYTE#
RY/BY#
WP#/ACC = Hardware Write Protect/
Acceleration Pin
RESET#
BYTE#
RY/BY#
VCC
= Hardware Reset Pin, Active Low
= Selects 8-bit or 16-bit mode
= Ready/Busy Output
= 3.0 volt-only single power supply
(see Product Selector Guide for speed
options and voltage supply tolerances)
VSS
NC
= Device Ground
= Pin Not Connected Internally
6
Am29DL640H
June 7, 2005