28F320J5 and 28F640J5
4.2.6
Device Geometry Definition
This field provides critical details of the flash device geometry.
Table 11. Device Geometry Definition
Code See Table
Below
Offset Length
27h
28h
Description
“n” such that device size = 2n in number of bytes
1
27:
x8/
x16
2
Flash device interface: x8 async x16 async x8/x16 async
28:
--02
28:00,29:00 28:01,29:00 28:02,29:00
29:
2A:
2B:
--00
--05
--00
2Ah
2
“n” such that maximum number of bytes in write buffer = 2n
32
Number of erase block regions within device:
1. x = 0 means no erase blocking; the device erases in “bulk”
2. x specifies the number of device or partition regions with one or
more contiguous same-size erase blocks
3. Symmetrically blocked partitions have one blockingregion
4. Partition size = (total blocks) x (individual block size)
2Ch
2Dh
1
4
2C:
--01
1
Erase Block Region 1 Information
2D:
2E:
2F:
30:
bits 0–15 = y, y+1 = number of identical-size erase blocks
bits 16–31 = z, region erase block(s) size are z x 256 bytes
Table 12. Device Geometry Definition
128 Mbit
(Info Only
Address
32 Mbit
64 Mbit
27:
28:
29:
2A:
2B:
2C:
2D:
2E:
2F:
30:
--16
--02
--00
--05
--00
--01
--1F
--00
--00
--02
--17
--02
--00
--05
--00
--01
--3F
--00
--00
--02
--18
--02
--00
--05
--00
--01
--7F
--00
--00
--02
4.2.7
Primary-Vendor Specific Extended Query Table
Certain flash features and commands are optional. The Primary Vendor-Specific Extended Query
table specifies this and other similar information.
Datasheet
23
INTEL [ INTEL ]
