m58wr064kt Numonyx, m58wr064kt Datasheet - Page 97

• Manufacturer Part Number: m58wr064kt
• Description: 16-, 32-, 64-mbit ?16, Multiple Bank, Burst 1.8 V Supply Flash Memories
• Manufacturer: Numonyx

M58WRxxxKT, M58WRxxxKB
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 device enters CFI query mode and the
data structure is read from the memory. Tables 38, 39, 40, 41, 42, 43, 44, 45,
show the addresses used to retrieve the data. The query data is always presented on the
lowest order data outputs (DQ0-DQ7), the other outputs (DQ8-DQ15) are set to 0.
The CFI data structure also contains a security area where a 64-bit unique security number
is written (see
in read mode by the final user. It is impossible to change the security number after it has
been written by Numonyx. Issue a Read Array command to return to read mode.
Table 38.
1. The Flash memory display the CFI data structure when CFI Query command is issued. In this table are
Offset
listed the main sub-sections detailed in Tables 39, 40,
lowest order data outputs.
1Bh
00h
10h
27h
80h
P
A
Security Code Area
Reserved
CFI Query Identification String
System Interface Information
Device Geometry Definition
Primary Algorithm-specific Extended Query
table
Alternate Algorithm-specific Extended
Query table
Common Flash interface
Query structure overview
Figure 7: Protection Register memory
Sub-section name
(1)
41
and 42. Query data is always presented on the
Reserved for algorithm-specific information
Command set ID and algorithm data offset
Device timing & voltage information
Flash device layout
Additional information specific to the
Primary Algorithm (optional)
Additional information specific to the
Alternate Algorithm (optional)
Lock Protection Register
Unique device Number and
User Programmable OTP
map). This area can be accessed only
Common Flash interface
Description
46
and
47
97/125