M29W256GH7AN6E NUMONYX, M29W256GH7AN6E Datasheet - Page 86

• Manufacturer Part Number: M29W256GH7AN6E
• Description: Flash Mem Parallel 3V/3.3V 256M-Bit 32M x 8/16M x 16 70ns 56-Pin TSOP Tray
• Manufacturer: NUMONYX

Specifications of M29W256GH7AN6E

• Package: 56TSOP
• Cell Type: NOR
• Density: 256 Mb
• Architecture: Sectored
• Block Organization: Symmetrical
• Location Of Boot Block: Bottom|Top
• Typical Operating Supply Voltage: 3|3.3 V
• Sector Size: 128KByte x 256
• Timing Type: Asynchronous
• Operating Temperature: -40 to 85 °C
• Interface Type: Parallel

Appendix B
The common flash interface is a JEDEC approved, standardized data structure that can be read from the
flash memory device. It allows a system software to query the device to determine various electrical and
timing parameters, density information and functions supported by the memory. The system can interface
easily with the device, enabling the software to upgrade itself when necessary.
When the Read CFI Query command is issued, the memory enters read CFI query mode and read
operations output the CFI data.
addresses (A-1, A0-A7) used to retrieve the data. The CFI data structure also contains a security area
where a 64-bit unique security number is written (see
accessed only in read mode by the final user. It is impossible to change the security number after it has
been written by Numonyx.
Table 39.
1. Query data are always presented on the lowest order data outputs.
Table 40.
1. Query data are always presented on the lowest order data outputs (DQ7-DQ0) only. DQ8-DQ15 are ‘0’.
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1Ah
x16
10h
12h
13h
14h
15h
16h
17h
18h
19h
1Bh
11h
x16
10h
27h
40h
61h
Address
Address
2Ah
2Ch
2Eh
20h
22h
24h
26h
28h
30h
32h
34h
4Eh
C2h
20h
36h
80h
x8
x8
Query structure overview
CFI query identification string
CFI query identification string
System interface information
Device geometry definition
Primary algorithm-specific extended query table
Security code area
0051h
0052h
0059h
0002h
0000h
0040h
0000h
0000h
0000h
0000h
0000h
Data
Query unique ASCII string ‘QRY’
Primary algorithm command set and control interface ID code 16 bit
ID code defining a specific algorithm
Address for primary algorithm extended query table (see
Alternate vendor command set and control interface ID code second
vendor - specified algorithm supported
Address for alternate algorithm extended query table
Common flash interface (CFI)
Sub-section name
Table
39,
(1)
Table
(1)
40,
Description
Table
Table 44: Security code
41,
Table
Command set ID and algorithm data offset
Device timing & voltage information
Flash device layout
Additional information specific to the primary
algorithm (optional)
64-bit unique device number
42,
Table 43
Table
Description
area). This area can be
and
43)
Table 44
compatible
Spansion
P = 40h
Value
show the
NA
NA
‘Q’
‘R’
‘Y’