Preliminary
K5A3x80YT(B)C
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
1st Cycle
2nd Cycle
3rd Cycle
4th Cycle
5th Cycle
6th Cycle
Command Sequence
Cycle
Word Byte
Word
Byte
Word
Byte
Word
Byte
Word
Byte
Word
Byte
Addr
RA
RD
Read
Data
1
1
Addr
XXXH
F0H
Reset
Data
DA/
555H
DA/
AAAH
DA/
X00H
DA/
X00H
Autoselect
Manufacturer
ID (2,3)
Addr
Data
Addr
Data
Addr
Data
Addr
555H
AAH
AAAH
AAH
AAAH
AAH
AAAH
AAAH
2AAH
55H
2AAH
55H
2AAH
55H
2AAH
555H
555H
555H
4
4
4
90H
ECH
DA/
555H
DA/
AAAH
DA/
X01H
DA/
X02H
Autoselect
Device Code
(2,3)
555H
555H
90H
(See Table 6)
Autoselect
Block Group
Protect Verify
(2,3)
DA/
555H
DA/
AAAH
BA /
X02H
BA/
X04H
(See Table 6)
90H
Auto Select
DA/
555H
DA/
AAAH
DA /
X03H
DA/
X06H
555H
555H
Secode Block
Factory Protect
Verify (2,3)
4
(See Table 6)
Data
Addr
Data
Addr
Data
Addr
Data
Addr
Data
Addr
Data
Addr
Data
Addr
Data
Addr
Data
Addr
Data
Addr
Data
AAH
AAAH
AAH
AAAH
AAH
AAAH
AAH
AAAH
AAH
55H
2AAH
55H
2AAH
55H
2AAH
55H
2AAH
55H
90H
AAAH
88H
AAAH
90H
AAAH
A0H
AAAH
20H
555H
555H
555H
555H
555H
555H
Enter Secode
BlockRegion
3
4
4
3
2
XXXH
00H
PA
Exit Secode
Block
Region
555H
555H
555H
555H
555H
555H
Program
PD
Unlock Bypass
XXXH
PA
PD
Unlock Bypass
Program
A0H
XXXH
XXXH
00H
Unlock Bypass
Reset
2
6
6
1
90H
555H
AAH
555H AAAH
AAH
AAAH
2AAH
55H
2AAH
55H
555H
555H
555H
AAAH
80H
AAAH
80H
555H
AAH
555H
AAH
AAAH
2AAH
55H
2AAH
55H
555H
555H
555H
AAAH
Chip Erase
Block Erase
10H
555H
AAAH
BA
30H
XXXH
Block Erase
Suspend (4, 5)
B0H
XXXH
Block Erase
Resume
1
30H
Revision 0.0
November 2002
- 8 -
SAMSUNG [ SAMSUNG ]
