K5A3X80YTC Datasheet, PDF (8/45 Pages) Samsung semiconductor – MCP MEMORY

K5A3x80YT(B)C
Preliminary
MCP MEMORY
Flash MEMORY COMMAND DEFINITIONS
Flash memory operates by selecting and executing its operational modes. Each operational mode has its own command set. In order
to select a certain mode, a proper command with specific address and data sequences must be written into the command register.
Writing incorrect information which include address and data or writing an improper command will reset the device to the read mode.
The defined valid register command sequences are stated in Table 5. Note that Erase Suspend (B0H) and Erase Resume (30H)
commands are valid only while the Block Erase Operation is in progress.
Table 5. Command Sequences
Command Sequence Cycle
Read
Reset
Addr
1
Data
Addr
1
Data
1st Cycle
Word Byte
RA
RD
XXXH
F0H
Autoselect
Addr
Manufacturer
4
ID (2,3)
Data
555H AAAH
AAH
Autoselect
Device Code
(2,3)
Addr
4
Data
Autoselect
Block Group
Addr
4
Protect Verify
(2,3)
Data
Auto Select
Secode Block
Addr
4
Factory Protect
Verify (2,3)
Data
Enter Secode
Block Region
Addr
Data
3
Exit Secode
Block
Region
Program
Addr
4
Data
Addr
4
Data
Unlock Bypass ^Addr
3
Data
Unlock Bypass
Program
Addr
Data
2
Unlock Bypass
Reset
Addr
Data
2
Chip Erase
Addr
6
Data
Block Erase
Addr
6
Data
Block Erase
Suspend (4, 5)
Addr
Data
1
Block Erase
Resume
Addr
1
Data
555H AAAH
AAH
555H AAAH
AAH
555H AAAH
AAH
555H AAAH
AAH
555H AAAH
AAH
555H AAAH
AAH
555H AAAH
AAH
XXXH
A0H
XXXH
90H
555H AAAH
AAH
555H AAAH
AAH
XXXH
B0H
XXXH
30H
2nd Cycle
Word Byte
2AAH 555H
55H
2AAH 555H
55H
2AAH 555H
55H
2AAH 555H
55H
2AAH 555H
55H
2AAH 555H
55H
2AAH 555H
55H
2AAH 555H
55H
PA
PD
XXXH
00H
2AAH 555H
55H
2AAH 555H
55H
3rd Cycle
Word Byte
DA/ DA/
555H AAAH
90H
DA/ DA/
555H AAAH
90H
DA/ DA/
555H AAAH
90H
DA/ DA/
555H AAAH
90H
555H AAAH
88H
555H AAAH
90H
555H AAAH
A0H
555H AAAH
20H
555H AAAH
80H
555H AAAH
80H
4th Cycle
Word Byte
DA/
DA/
X00H X00H
ECH
DA/
DA/
X01H X02H
(See Table 6)
BA /
BA/
X02H X04H
(See Table 6)
DA / DA/
X03H X06H
(See Table 6)
XXXH
00H
PA
PD
555H AAAH
AAH
555H AAAH
AAH
5th Cycle
Word Byte
2AAH 555H
55H
2AAH 555H
55H
6th Cycle
Word Byte
555H AAAH
10H
BA
30H
-8-
Revision 0.0
November 2002