SST39VF800A-70-4I-MAQE-T Microchip Technology, SST39VF800A-70-4I-MAQE-T Datasheet - Page 9

• Manufacturer Part Number: SST39VF800A-70-4I-MAQE-T
• Description: 2.7V To 3.6V 8Mbit Multi-Purpose Flash 48 WFBGA 4x6x0.8 Mm T/R
• Manufacturer: Microchip Technology
• Series: -r

Specifications of SST39VF800A-70-4I-MAQE-T

• Format - Memory: FLASH
• Memory Type: FLASH
• Memory Size: 8M (512K x 16)
• Speed: 70ns
• Interface: Parallel
• Voltage - Supply: 2.7 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 48-WFBGA
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Designing In SST’s
Multi-Purpose Flash (39 Series) Byte-wide Products
TABLE 13: C
The Sector-Erase operations of SST and Atmel devices
use the same six-byte command sequence with the same
command data of 30H, but different sector addresses dur-
ing their sixth byte sequence. This is due to the differences
in sector architectures between SST and Atmel products.
The AT49LV008A consists of one 8 KWord, two 4 KWord,
one 16 KWord, and thirty-one 64 KByte sectors. On the
other hand, the SST39VF080 consists of 512 uniform 4
KByte sectors. This difference in sector architectures
results in the SST device having more sectors than the
Atmel device. Therefore, when a Sector-Erase operation is
performed, the SST device will use address lines A
to decode sector addresses as opposed to the Atmel
device using A
decoding should be accounted for by the software driver.
In addition to the Sector-Erase command which erases
uniform small sectors, the SST39VF080 offers a Block-
Erase command. While the Sector-Erase operation
erases 4 KByte sectors on the SST device, a Block-
Erase operation erases 64 KByte blocks. Each block
consists of sixteen 4 KByte sectors. This flexible sector/
block erasability allows a system designer to use the
Sector-Erase capability for finer software granularity and
the Block-Erase capability for faster Erase operations.
Note that the Atmel device erases 64 KByte sectors
using a Sector-Erase command (30H), while the SST
device erases 64 KByte blocks using a Block-Erase com-
mand (50H).
In summary, when an SST39VF080 is used on an existing
AT49LV008A-based design, minor modifications to the
software driver are required.
SOFTWARE DRIVERS
SST provides software drivers for its devices both in ‘C’ and
8086 assembly languages. The drivers are available on
SST’s website at www.sst.com.
©2005 Silicon Storage Technology, Inc.
Word-Program
Sector-Erase
Block-Erase
Chip-Erase
ID Entry
ID Exit
Silicon Storage Technology, Inc. • 1171 Sonora Court • Sunnyvale, CA 94086 • Telephone [phone] • Fax [phone]
19
OMMAND
-A
12.
SST
4 Cycle with A0H
6 Cycle with 30H
6 Cycle with 50H
6 Cycle with 10H
3 Cycle with 90H
1 or 3 Cycle with F0H
These differences in sector address
S
ET
C
OMPARISON
www.SuperFlash.com or www.sst.com
ATMEL
Same
Same
N/A
Same
Same
Same
T13.0 2014
19
-A
11
9
S72014-04-000
Application Note
10/05