A29400 Series
Table 5. A29400 Command Definitions
Bus Cycles (Notes 2 - 5)
Third Fourth
Addr Data Addr Data Addr Data Addr Data Addr Data Addr Data
RA RD
Command
Sequence
(Note 1)
First
Second
Fifth
Sixth
Read (Note 6)
Reset (Note 7)
1
1
XXX F0
555
Word
Byte
2AA
555
2AA
555
AAA
555
Manufacturer ID
4
4
AA
55
55
90 X00
37
AAA
Word
Byte
B3B0
B0
555
AA
AAA
X01
90
Device ID,
Top Boot Block
555
2AA
555
AAA
X02
Word
Byte
B331
31
555
555 90
AAA
X01
X02
X03
Device ID,
Bottom Boot Block
AA
AA
55
4
4
AAA
Word
Byte
555
AAA
555
2AA
555
2AA
555
90
Continuation ID
55
55
7F
X06
AAA
XX00
XX01
00
(SA)
X02
555
Word
Sector Protect Verify
(Note 9)
4
AA
90
(SA)
X04
Byte
AAA
555
AAA
01
Word
Byte
555
AAA
555
AAA
555
AAA
2AA
555
2AA
555
2AA
555
555
A0
Program
4
6
6
AA
AA
AA
55
55
55
PA
PD
AA
AA
AAA
Word
Byte
555
80
555
AAA
555
AAA
2AA
555
2AA
555
555
Chip Erase
55
55
10
30
AAA
AAA
Word
Byte
555
Sector Erase
80
SA
AAA
Erase Suspend (Note 9)
Erase Resume (Note 10)
1
1
XXX B0
XXX 30
Legend:
X = Don't care
RA = Address of the memory location to be read.
RD = Data read from location RA during read operation.
PA = Address of the memory location to be programmed. Addresses latch on the falling edge of the
whichever happens later.
or
pulse,
CE
WE
PD = Data to be programmed at location PA. Data latches on the rising edge of
or
pulse, whichever happens first.
CE
WE
SA = Address of the sector to be verified (in autoselect mode) or erased. Address bits A17 - A12 select a unique sector.
Note:
1. See Table 1 for description of bus operations.
2. All values are in hexadecimal.
3. Except when reading array or autoselect data, all bus cycles are write operation.
4. Address bits A17 - A11 are don't cares for unlock and command cycles, unless SA or PA required.
5. No unlock or command cycles required when reading array data.
6. The Reset command is required to return to reading array data when device is in the autoselect mode, or if I/O5 goes high
(while the device is providing status data).
7. The fourth cycle of the autoselect command sequence is a read cycle.
8. The data is 00h for an unprotected sector and 01h for a protected sector. See "Autoselect Command Sequence" for more information.
9. The system may read and program in non-erasing sectors, or enter the autoselect mode, when in the Erase Suspend mode.
10. The Erase Resume command is valid only during the Erase Suspend mode.
11. The time between each command cycle has to be less than 50ms.
PRELIMINARY
(February, 2001, Version 0.1)
12
AMIC Technology, Inc.
AMICC [ AMIC TECHNOLOGY ]
