M29W640GH, M29W640GL, M29W640GT, M29W640GB
Description
(1)
Table 2.
Signal names
Name
Description
Direction
A0-A21
DQ0-DQ7
DQ8-DQ14
Address Inputs
Inputs
Inputs/Outputs
Inputs/Outputs
Inputs/Outputs
Input
Data Inputs/Outputs
Data Inputs/Outputs
DQ15A–1 (or DQ15)
Data Input/Output or Address Input (or Data Input/Output)
E
G
Chip Enable
Output Enable
Input
W
Write Enable
Input
RP
RB
BYTE
VCC
Reset/Block Temporary Unprotect
Ready/Busy
Input
Output
Byte/Word Organization Select
Supply Voltage
Input
Supply voltage
Supply voltage
-
VPP/WP
Supply Voltage for Fast Program (optional) or Write Protect
Ground
VSS
NC
Not Connected Internally
-
1. VPP/WP may be left floating since it is internally connected to an pull-up resistor to enable Program/Erase operations,
Table 3.
Block
Protection granularity on the M29W640GH and M29W640GL
Kbytes/Kwords Protection Block Group
(x8)
(x16)
000000h–03FFFFh(1)
040000h–07FFFFh
--
000000h–01FFFFh(1)
020000h–03FFFFh
--
0 to 3
4 to 7
4 x 64/32
4 x 64/32
--
Block level
Protection Group
--
--
120 to 123
124 to 127
4 x 64/32
4x 64/32
Protection Group
Block level
780000h–7BFFFFh
7C0000h–7FFFFFh
3C0000h–3DFFFFh
3E0000h–3FFFFFh
1. Used as the Extended Block Addresses in Extended Block mode.
Table 4.
Block
Protection granularity on the M29W640GT
Kbytes/Kwords Protection Block Group
(x8)
(x16)
000000h–03FFFFh(1)
040000h–07FFFFh
--
000000h–01FFFFh(1)
020000h–03FFFFh
--
0 to 3
4 to 7
4 x 64/32
4 x 64/32
--
Protection Group
Protection Group
--
--
120 to 123
124 to 126
127 to 134
4 x 64/32
3 x 64/32
Protection Group
Protection Group
Block level
780000h–7BFFFFh
7C0000h–7EFFFFh
7F0000h–7FFFFFh
3C0000h–3DFFFFh
3E0000h–3F7FFFh
3F8000h–3FFFFFh
8x 8/4(2)
1. Used as the Extended Block Addresses in Extended Block mode.
2. Boot blocks.
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