Table 4.
Cycles
Am2F010 Command Definitions
Bus Cycles (Notes 2-3)
Command
Sequence
(Note 1)
Read (Note 4)
Reset (Note 5)
Manufacturer ID
Autoselect
(Note 6)
Device ID
Sector Protect Verify
(Note 7)
First
Addr
RA
XXXX
5555
5555
5555
5555
5555
5555
Data
RD
F0
AA
AA
AA
AA
AA
AA
Second
Addr
Data
Third
Addr
Fourth
Data
Fifth
Addr Data
Sixth
Addr
Data
Data Addr
1
1
4
4
4
4
6
6
2AAA
2AAA
2AAA
2AAA
2AAA
2AAA
55
55
55
55
55
55
5555
5555
5555
5555
5555
5555
90
90
90
A0
80
80
XX00
XX01
(SA)
X02
PA
5555
5555
01
20
00
01
PD
AA
AA
2AAA
2AAA
55
55
5555
SA
10
30
Program
Chip Erase
Sector Erase
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 WE# or CE# pulse,
whichever happens later.
PD = Data to be programmed at location PA. Data latches on the
rising edge of WE# or CE# pulse, whichever happens first.
SA = Address of the sector to be verified (in autoselect mode) or
erased. Address bits A16–A14 uniquely select any sector.
Notes:
1. See Table 1 for description of bus operations.
2. All values are in hexadecimal.
3. Except when reading array or autoselect data, all command
bus cycles are write operations.
4. No unlock or command cycles required when reading array
data.
5. The Reset command is required to return to reading array
data when device is in the autoselect mode, or if DQ5 goes
high (while the device is providing status data).
6. The fourth cycle of the autoselect command sequence is a
read operation.
7. The data is 00h for an unprotected sector and 01h for a
protected sector. See “Autoselect Command Sequence” for
more information.
Am29F010
13
AMD [ ADVANCED MICRO DEVICES ]
