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28F640C3

Intel Advanced+ Boot Block Flash Memory (C3)

Intel 

Intel£ Advanced+ Boot Block Flash Memory (C3)

Offset

0x1E

0x1F

0x20

0x21

0x22

0x23

0x24

0x25

0x26

Length

Description

VPP [programming] supply maximum program/erase voltage

1

bits 0–3 BCD 100 mV

bits 4–7 HEX volts

1

“n” such that typical single word program time-out =2n µs

1

“n” such that typical max. buffer write time-out = 2n µs

1

“n” such that typical block erase time-out = 2n ms

1

“n” such that typical full chip erase time-out = 2n ms

1

“n” such that maximum word program time-out = 2n times typical

1

“n” such that maximum buffer write time-out = 2n times typical

1

“n” such that maximum block erase time-out = 2n times typical

1

“n” such that maximum chip erase time-out = 2n times typical

Add. Hex Code Value

1E:

--C6

12.6 V

1F:

--05

32 µs

20:

--00

NA

21:

--0A

1s

22:

--00

NA

23:

--04

512µs

24:

--00

NA

25:

--03

8s

26:

--00

NA

C.5

Device Geometry Definition

Table 30. Device Geometry Definition

Offset

0x27

0x28

0x2A

0x2C

0x2D

0x2D

Length

Description

1

“n” such that device size = 2n in number of bytes

x8 async x16 async x8/x16 async

2

Flash device interface:

28:00,29:00 28:01,29:00 28:02,29:00

2

“n” such that maximum number of bytes in write buffer = 2n

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

1

with one or more contiguous same-size erase blocks.

3. Symmetrically blocked partitions have one blocking region

4. Partition size = (total blocks) x (individual block size)

Erase Block Region 1 Information

bits 0–15 = y, y+1 = number of identical-size erase blocks

4

bits 16–31 = z, region erase block(s) size are z x 256 bytes

Erase Block Region 2 Information

bits 0–15 = y, y+1 = number of identical-size erase blocks

14

bits 16–31 = z, region erase block(s) size are z x 256 bytes

Add.

27

28:

29:

2A:

2B:

2C:

2D:

2E:

2F:

30:

31:

32:

33:

34:

Hex

Code

Value

See Table 31

--01

x16

--00

--00

0

--00

--02

2

See Table 31

See Table 31

Datasheet

61

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