M29W128 View Datasheet(PDF) - Numonyx -> Micron
Part Name
Description
MFG CO.
'M29W128' PDF : 78 Pages View PDF
Bus operations
M29W128FH, M29W128FL
3.6.5 Temporary Unprotect of high voltage Protected Blocks
The RP pin can be used to temporarily unprotect all the blocks previously protected using the In-System
or the Programmer protection technique (High Voltage techniques).
Refer to Section 2.9: Reset/Block Temporary Unprotect (RP).
Table 2. Bus operations, 8-bit mode
Operation(1)
Address Inputs
E G W RP VPP/WP
A22-A0, DQ15A-1
Data Inputs/Outputs
DQ14-DQ8
DQ7-DQ0
Bus Read
VIL VIL VIH VIH
VIH
Bus Write
VIL VIH VIL VIH
VIH
Output Disable
X VIH VIH VIH
VIH
Standby
VIH X X VIH
VIH
1. X = VIL or VIH.
Cell Address
Command Address
X
X
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Data Output
Data Input
Hi-Z
Hi-Z
Table 3. Read Electronic Signature, 8-bit mode
Read
Cycle(1)
Address Inputs
Data Inputs/Outputs
E
G
W
A22-A10 A9 A8-A7 A6 A5-A4 A3
A2
A1
A0
DQ15A-1
DQ14-
DQ8
DQ7-DQ0
Manufacturer
Code
VIL VIL VIL VIL
X
Device Code
(Cycle 1)
VIL VIL VIL VIH
X
Device Code VIL VIL VIH
X
VID X VIL X
(Cycle 2)
VIH VIH VIH VIL
X
Device Code
(Cycle 3)
VIH VIH VIH VIH
X
Hi-Z
20h
Hi-Z 7Eh (Both Devices)
Hi-Z 12h (Both Devices)
8Ah (M29W128FH)
Hi-Z
8Bh (M29W128FL)
1. X = VIL or VIH.
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