a29801tg-70uf AMIC Technology Corporation, a29801tg-70uf Datasheet - Page 16

• Manufacturer Part Number: a29801tg-70uf
• Description: 1m X 8 Bit / 512k X 16 Bit Cmos 5.0 Volt-only, Boot Sector Flash Memory
• Manufacturer: AMIC Technology Corporation

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
PD = Data to be programmed at location PA. Data latches on the rising edge of
SA = Address of the sector to be verified (in autoselect mode) or erased. Address bits A18 - 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 A18 - 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/O
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
9. The data is 00h for an unprotected sector and 01h for a protected sector. See “Autoselect Command Sequence” for more
10. Command is valid when device is ready to read array data or when device is in autoselect mode.
11. The Unlock Bypass command is required prior to the Unlock Bypass Program command.
12. The Unlock Bypass Reset command is required to return to reading array data when the device is in the unlock bypass
13. The system may read and program in non-erasing sectors, or enter the autoselect mode, when in the Erase Suspend mode.
14. The Erase Resume command is valid only during the Erase Suspend mode.
(April, 2010, Version 0.1)
Read (Note 6)
Reset (Note 7)
Unlock Bypass Program (Note
11)
Unlock Bypass Reset (Note 12)
Erase Suspend (Note 13)
Erase Resume (Note 14)
Program
Unlock Bypass
Chip Erase
Sector Erase
Continuation ID
Sector Protect Verify
(Note 9)
Device ID,
Top Boot Block
Device ID,
Bottom Boot Block
(while the device is providing status data).
information.
information.
mode.
Manufacturer ID
whichever happens later.
Command
Sequence
(Note 1)
Word
Byte
Word
Byte
Word
Word
Word
Word
Word
Word
Word
Byte
Byte
Byte
Byte
Byte
Byte
Byte
4
4
4
4
4
4
3
6
6
1
1
2
2
1
1
Addr Data
555
AAA
XXX
XXX
XXX
555
AAA
555
AAA
555
AAA
555
AAA
555
AAA
555
AAA
555
AAA
555
AAA
RA
XXX A0
XXX 90
Table 9. A29801 Command Definitions
First
AA
AA
AA
AA
AA
RD
AA
AA
AA
F0
B0
30
AA
2AA
555
Addr Data
XXX
2AA
555
2AA
555
2AA
555
2AA
555
2AA
555
2AA
555
2AA
555
2AA
555
PA
Second
55
55
55
55
55
55
55
55
PD
00
55
15
555
AAA
Bus Cycles (Notes 2 - 5)
Addr Data Addr Data Addr Data
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
555
555
555
555
555
555
555
555
Third
90
90
90
90
90
A0
20
80
WE
80
or
(SA)
(SA)
X00
X03
X06
X04
X01 22D6
X02 XX01
PA
555
AAA
555
AAA
X02
X01 2258
X02
CE
Fourth
pulse, whichever happens first.
XX00
PD
AA
D6
AA
00
01
58
37
7F
AMIC Technology, Corp.
2AA
555
2AA
555
Fifth
A29801 Series
55
55
WE
Addr
SA
555
AAA
or
5
CE
goes high
Sixth
Data
10
30
pulse,