W29C040 Ver la hoja de datos (PDF) - Winbond
Número de pieza
componentes Descripción
Fabricante
W29C040 Datasheet PDF : 24 Pages
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W29C040
and 1's. When the write cycle is completed, this toggling between 0's and 1's will stop. The device is
then ready for the next operation. See Toggle Bit Timing Diagram.
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 or hardware operation. In the
software access mode, a six-byte command sequence can be used to access the product ID. A read
from address "00000 hex" outputs the manufacturer code "DA hex." A read from address "00001 hex"
outputs the device code "46 hex." The product ID operation can be terminated by a three-byte
command sequence.
In the hardware access mode, access to the product ID is activated by forcing #CE and #OE low, #WE
high, and raising A9 to 12 volts.
Note: The hardware SID read function is not included in all parts; please refer to Ordering Information for details.
TABLE OF OPERATING MODES
Operating Mode Selection
Operating Range: 0 to 70° C for normal products, -40 to 85° C for W29C040xxxxK, VDD = 5V ±10 %, VSS = 0V, VHH = 12V
MODE
Read
Write
Standby
Write Inhibit
Output Disable
Product ID
#CE
VIL
VIL
VIH
X
X
X
VIL
VIL
#OE
VIL
VIH
X
VIL
X
VIH
VIL
VIL
PINS
#WE
ADDRESS
DQ.
VIH AIN
Dout
VIL AIN
Din
XX
High Z
XX
High Z/DOUT
VIH X
High Z/DOUT
XX
High Z
VIH A0 = VIL; A1 − A18 = VIL; Manufacturer Code DA
A9 = VHH
(Hex)
VIH A0 = VIH; A1 − A18 = VIL; Device Code
A9 = VHH
46 (Hex)
Publication Release Date: May 6, 2002
-5-
Revision A9
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