Am29F002/Am29F002N 15
PRELIMINARY
Table 5. Am29F002/Am29F002N Command Definitions
Legend:
X = Don’t care
RA = Address of the memory location to be read.
RD = Data read from location RA during read op eration.
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 v erified (in autoselect mode) or
erased. Address bits A17–A13 uniquely select any sector.
Notes:
1. See Table 1 for description of bus operations.
2. All values are in hexadec imal.
3. Except when reading arra y or autoselect data, all b us cycles
are write operations.
4. Address bits A17–A12 are don’t care s for unlock and
command cycles, except when PA or SA is 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 DQ5 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. The Erase Sus pend command is valid on ly during a
sector erase operation.
10. The Erase Resume command is valid only during the Erase
Suspend mode.
Command
Sequence
(Note 1)
Bus Cycles (Notes 2–4)
First Second Third Fourth Fifth Sixth
Addr Data Addr Data Addr Data Addr Data Addr Data Addr Data
Read (Note 5) 1 RA RD
Reset (Note 6) 1 XXX F0
Auto-
select
(Note 7)
Manufacturer ID 4 555 AA 2AA 55 555 90 X00 01
Device ID,
Top Boot Block
4 555 AA 2AA 55 555 9 0 X01 B0
Device ID,
Bottom Boot Block
4 555 AA 2AA 55 555 90 X01 34
Sector Protect Verify
(Note 8)
4 555 AA 2AA 55 555 90
(SA)
X02
00
01
Program 4 555 AA 2AA 55 555 A0 PA PD
Chip Erase 6 555 AA 2AA 55 555 80 555 AA 2AA 55 555 10
Sector Erase 6 555 AA 2AA 55 555 8 0 555 AA 2AA 55 S A 30
Erase Suspen d (Note 9) 1 XXX B0
Erase Resume (N ote 10) 1 XXX 30
Cycles
