M28W320FCT70N6F NUMONYX, M28W320FCT70N6F Datasheet - Page 51

• Manufacturer Part Number: M28W320FCT70N6F
• Description: IC FLASH 32MBIT 70NS 48TSOP
• Manufacturer: NUMONYX

Specifications of M28W320FCT70N6F

• Format - Memory: FLASH
• Memory Type: FLASH - Nor
• Memory Size: 32M (2M 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
Table 26.
1. Query data are always presented on the lowest order data outputs.
Table 27.
02h-0Fh reserved Reserved
Offset
Offset
00h
10h
1Bh
27h
00h
01h
10h
11h
12h
13h
14h
15h
16h
P
A
Reserved
CFI Query Identification String
System Interface Information
Device Geometry Definition
Primary Algorithm-specific Extended Query table
Alternate Algorithm-specific Extended Query table
88BAh
88BBh
0020h
0051h
0052h
0059h
0003h
0000h
0035h
0000h
Data
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 (RCFI) is issued the device enters CFI Query mode and the
data structure is read from the memory.
and
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 Numonyx. Issue a Read command to return to Read mode.
Query Structure Overview
CFI Query Identification String
Table 31
Manufacturer Code
Device Code
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
Sub-section Name
Common Flash Interface (CFI)
show the addresses used to retrieve the data.
Table 31: Security Code
(1)
(1)
Description
Area). This area can be accessed only in Read
Table
26,
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)
Table
27,
Table
Table
Description
29)
28,
Table
Intel compatible
29,
Numonyx
P = 35h
Bottom
Value
Table 30
Top
"Q"
"R"
"Y"
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