M29F800DT55N1 NUMONYX, M29F800DT55N1 Datasheet - Page 42
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M29F800DT55N1
Manufacturer Part Number
M29F800DT55N1
Description
IC FLASH 8MBIT 55NS 48TSOP
Manufacturer
NUMONYX
Datasheet
1.M29F800DB70N6.pdf
(53 pages)
Specifications of M29F800DT55N1
Format - Memory
FLASH
Memory Type
FLASH - Nor
Memory Size
8M (1M x 8 or 512K x 16)
Speed
55ns
Interface
Parallel
Voltage - Supply
4.5 V ~ 5.5 V
Operating Temperature
0°C ~ 70°C
Package / Case
48-TSOP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Common Flash Interface (CFI)
Appendix B
42/53
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 26
The CFI data structure also contains a security area where a 64 bit unique security number
is written (see
mode by the final user. It is impossible to change the security number after it has been
written by ST. Issue a Read command to return to Read mode.
Table 21.
1. Query data are always presented on the lowest order data outputs.
1Bh
x16
10h
27h
40h
61h
Address
show the addresses used to retrieve the data.
Common Flash Interface (CFI)
Query structure overview
Table 26: Security Code
4Eh
C2h
20h
36h
80h
x8
CFI Query Identification String Command set ID and algorithm data offset
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
(1)
21,
Table
22,
Device timing & voltage information
Flash device layout
Additional information specific to the
Primary Algorithm (optional)
64 bit unique device number
Table
23,
Table
Description
24,
Table
M29F800DT
25, and