ACE25AA800G datasheet(36/50 Pages) ACE

36 / 50 page

ACE25AA800G

Serial NOR Flash Memory 3.0V Multi I/O with 4KB,32KB & 64KB Sector/Block Erase

VER 1.1

Table 3. Signature and Parameter Identification Data Values

Description

Comment

Add(H)

(Byte)

DW Add

(Bit)

Data

SFDP Signature

Fixed:50444653H

00H

07:00

53H

01H

15:08

46H

02H

23:16

44H

03H

31:24

50H

SFDP Minor Revision Number

Start from 00H

04H

07:00

00H

SFDP Major Revision Number

Start from 01H

05H

15:08

01H

Number of Parameters Headers

Start from 00H

06H

23:16

01H

Unused

Contains0xFFH and can never be

changed

07H

31:24

FFH

ID number (JEDEC)

00H: It indicates a JEDEC specified

header

08H

07:00

00H

Parameter Table Minor Revision

Number

Start from 0x00H

09H

15:08

00H

Parameter Table Major Revision

Number

Start from 0x01H

0AH

23:16

01H

Parameter Table Length

(in double word)

How many DWORDs in the

Parameter table

0BH

31:24

09H

Parameter Table Pointer (PTP)

First address of JEDEC Flash

Parameter table

0CH

07:00

30H

0DH

15:08

00H

0EH

23:16

00H

Unused

Contains 0xFFH and can never be

changed

0FH

31:24

FFH

ID Number(ACE Manufacturer ID) Itis indicatesACEmanufacturerID

10H

07:00

0BH

Parameter Table Minor Revision

Number

Start from 0x00H

11H

15:08

00H

Parameter Table Major Revision

Number

Start from 0x01H

12H

23:16

01H

Parameter Table Length

(in double word)

How many DWORDs in the

Parameter table

13H

31:24

03H

Parameter Table Pointer (PTP)

First address of Flash Parameter

table

14H

07:00

60H

15H

15:08

00H

16H

23:16

00H

Unused

Contains0xFFH and can never be

changed

17H

31:24

FFH

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