M29W800DB70N6F NUMONYX, M29W800DB70N6F Datasheet - Page 41

• Manufacturer Part Number: M29W800DB70N6F
• Description: IC FLASH 8MBIT 70NS 48TSOP
• Manufacturer: NUMONYX
• Series: Axcell™r

Specifications of M29W800DB70N6F

• Format - Memory: FLASH
• Memory Type: FLASH - Nor
• Memory Size: 8M (1M x 8 or 512K x 16)
• Speed: 70ns
• Interface: Parallel
• Voltage - Supply: 2.7 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 48-TSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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 CFI Query command is issued the device enters CFI query mode and the data
structure is read from the memory.
Table 27
The CFI data structure also contains a security area where a 64-bit unique security number
is written (see
by the final user. It is impossible to change the security number after it has been written by
Numonyx. Issue a Read command to return to read mode.
Table 22.
1. Query data are always presented on the lowest order data outputs.
x 16
1Bh
10h
27h
40h
61h
Address
show the addresses used to retrieve the data.
C2h
20h
36h
4Eh
80h
x 8
Common flash interface (CFI)
Query structure overview
Table 27: Security code
CFI query identification string
System interface information
Device geometry definition
Primary algorithm-specific extended
query table
Security code area
Sub-section name
Table
area). This area can be accessed only in read mode
(1)
22,
Table
23,
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
Table
24,
Table
Description
25,
Table 26
and
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