
W39L040 Data Sheet
512K
× 8 CMOS FLASH MEMORY
Publication Release Date: April 14, 2005
- 1 -
Revision A6
Table of Contents-
1.
GENERAL DESCRIPTION................................................................................................................. 2
2.
FEATURES ........................................................................................................................................ 2
3.
PIN CONFIGURATIONS .................................................................................................................... 3
4.
BLOCK DIAGRAM.............................................................................................................................. 3
5.
PIN DESCRIPTION ............................................................................................................................ 3
6.
FUNCTIONAL DESCRIPTION ........................................................................................................... 4
6.1
Device Bus Operation ............................................................................................................. 4
6.2
Data Protection........................................................................................................................ 5
6.3
Command Definitions .............................................................................................................. 6
6.4
Write Operation Status ............................................................................................................ 8
6.5
Table of Operating Modes....................................................................................................... 9
6.6
Embedded Programming Algorithm ...................................................................................... 11
6.7
Embedded Erase Algorithm .................................................................................................. 12
6.8
Embedded #Data Polling Algorithm ...................................................................................... 13
6.9
Embedded Toggle Bit Algorithm ........................................................................................... 13
6.10
Boot Block Lockout Enable Flow Chart ................................................................................. 14
6.11
Software Product Identification and Boot Block Lockout Detection Flow Chart .................... 15
7.
ELECTRICAL CHARACTERISTICS ................................................................................................ 16
7.1
Absolute maximum Ratings................................................................................................... 16
7.2
DC Operating Characteristics................................................................................................ 16
7.3
Pin Capacitance .................................................................................................................... 16
7.4
AC Characteristics................................................................................................................. 17
7.5
AC Test Load and Waveform ................................................................................................ 17
8.
TIMING WAVEFORMS .................................................................................................................... 20
8.1
Read Cycle Timing Diagram ................................................................................................. 20
8.2
#WE Controlled Command Write Cycle Timing Diagram...................................................... 20
8.3
#CE Controlled Command Write Cycle Timing Diagram....................................................... 21
8.4
Chip Erase Timing Diagram .................................................................................................. 21
8.5
Sector/Page Erase Timing Diagram...................................................................................... 22
8.6
#DATA Polling Timing Diagram............................................................................................. 22
8.7
Toggle Bit Timing Diagram.................................................................................................... 23
9.
ORDERING INFORMATION ............................................................................................................24
10.
HOW TO READ THE TOP MARKING ............................................................................................. 25
11.
PACKAGE DIMENSIONS ................................................................................................................ 26
11.1
32L PLCC.............................................................................................................................. 26
11.2
32L TSOP (8 x 20 mm) ......................................................................................................... 26
11.3
32L STSOP (8 x 14 mm)....................................................................................................... 27
12.
VERSION HISTORY ........................................................................................................................ 28