AM29F400BB-70EF Spansion Inc., AM29F400BB-70EF Datasheet - Page 19

• Manufacturer Part Number: AM29F400BB-70EF
• Description: IC, FLASH, 4MBIT, 70NS, TSOP-48
• Manufacturer: Spansion Inc.

Specifications of AM29F400BB-70EF

• Memory Type: Flash
• Memory Size: 4Mbit
• Memory Configuration: 512K X 8 / 256K X 16
• Access Time: 70ns
• Supply Voltage Range: 4.5V To 5.5V
• Memory Case Style: TSOP
• No. Of Pins: 48
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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.
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 bus cycles
4. Data bits DQ15–DQ8 are don’t cares for unlock and
5. Address bits A17–A11 are don’t cares for unlock and
6. No unlock or command cycles required when reading array
7. The Reset command is required to return to reading array
November 11, 2009 21505E8
Read (Note 6)
Reset (Note 7)
Program
Chip Erase
Sector Erase
Erase Suspend (Note 10)
Erase Resume (Note 11)
are write operations.
command cycles.
command cycles, unless PA or SA required.
data.
data when device is in the autoselect mode, or if DQ5 goes
high (while the device is providing status data).
Manufacturer ID
Device ID,
Top Boot Block
Device ID,
Bottom Boot Block
Sector Protect Verify
(Note 9)
Command
Sequence
(Note 1)
Word
Word
Word
Word
Word
Word
Word
Byte
Byte
Byte
Byte
Byte
Byte
Byte
1
1
4
4
4
4
4
6
6
1
1
Table 5. Am29F400B Command Definitions
Addr
XXX
AAA
AAA
AAA
AAA
AAA
AAA
AAA
XXX
XXX
555
555
555
555
555
555
555
RA
First
Data
RD
AA
AA
AA
AA
AA
AA
AA
B0
D A T A
F0
30
Addr
2AA
2AA
2AA
2AA
2AA
2AA
2AA
555
555
555
555
555
555
555
Am29F400B
Second
Data
S H E E T
55
55
55
55
55
55
55
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 A17–A12 uniquely select any sector.
8. The fourth cycle of the autoselect command sequence is a
9. The data is 00h for an unprotected sector and 01h for a
10. The system may read and program in non-erasing sectors, or
11. The Erase Resume command is valid only during the Erase
read cycle.
protected sector. See“Autoselect Command Sequence” for
more information.
enter the autoselect mode, when in the Erase Suspend
mode. The Erase Suspend command is valid only during a
sector erase operation.
Suspend mode.
Addr
AAA
AAA
AAA
AAA
AAA
AAA
AAA
555
555
555
555
555
555
555
Bus Cycles (Notes 2–5)
Third
Data Addr
A0
90
90
90
90
80
80
(SA)
(SA)
AAA
AAA
X00
X01
X01
X02
X04
X02
X02
555
555
PA
Fourth
22AB
XX00
XX01
Data
2223
AB
PD
AA
AA
01
23
00
01
Addr Data
2AA
2AA
555
555
Fifth
55
55
Addr
AAA
555
SA
Sixth
Data
10
30
17