AMD29F010B Datasheet, PDF (15/34 Pages) Advanced Micro Devices – 1 Megabit (128 K x 8-bit) CMOS 5.0 Volt-only, Uniform Sector Flash Memory

Command Definitions
Table 4. Am29F010B Command Definitions
Command
Sequence
(Note 1)
Bus Cycles (Notes 2-3)
First
Second
Third
Fourth
Fifth
Sixth
Addr Data Addr Data Addr Data Addr Data Addr Data Addr Data
Read (Note 4)
1 RA RD
Reset (Note 5)
1 XXXX F0
Reset (Note 6)
3 555 AA 2AA 55 555 F0
Manufacturer ID
4 555 AA 2AA 55 555 90 X00 01
Autoselect
(Note 7)
Device ID
4 555 AA 2AA 55 555 90 X01 20
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 80 555 AA 2AA 55 SA 30
Erase Suspend (Note 9)
1 XXX B0
Erase Resume (Note 10)
1 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 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 device accepts the three-cycle reset command
sequence for backward compatibility.
7. The fourth cycle of the autoselect command sequence is a
read operation.
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 in non-erasing sectors, or enter the
autoselect mode, when in the Erase Suspend mode. The
Erase Suspend command is valid only during a sector erase
operation.
10. The Erase Resume command is valid only during the Erase
Suspend mode.
Am29F010B
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