DataSheet26.com

49LF008A PDF даташит

Спецификация 49LF008A изготовлена ​​​​«Silicon Storage Technology» и имеет функцию, называемую «SST49LF008A».

Детали детали

Номер произв 49LF008A
Описание SST49LF008A
Производители Silicon Storage Technology
логотип Silicon Storage Technology логотип 

30 Pages
scroll

No Preview Available !

49LF008A Даташит, Описание, Даташиты
A Microchip Technology Company
8 Mbit Firmware Hub
SST49LF008A
Data Sheet
The SST49LF008A flash memory devices are designed to be read-compatible
with the Intel® 82802 Firmware Hub (FWH) device for PC-BIOS application.
These devices provide protection for the storage and update of code and data in
addition to adding system design flexibility through five general purpose inputs.
Two interface modes are supported by the SST49LF008A: Firmware Hub (FWH)
Interface mode for in-system programming and Parallel Programming (PP) mode
for fast factory programming of PC-BIOS applications.
Features
• Firmware Hub for Intel 8xx Chipsets
• 8 Mbit SuperFlash memory array for code/data
storage
– 1024K x8
• Flexible Erase Capability
– Uniform 4 KByte Sectors
– Uniform 64 KByte overlay blocks
– 64 KByte Top Boot Block protection
– Chip-Erase for PP Mode Only
• Single 3.0-3.6V Read and Write Operations
• Superior Reliability
– Endurance:100,000 Cycles (typical)
– Greater than 100 years Data Retention
• Low Power Consumption
– Active Read Current: 6 mA (typical)
– Standby Current: 10 µA (typical)
• Fast Sector-Erase/Byte-Program Operation
– Sector-Erase Time: 18 ms (typical)
– Block-Erase Time: 18 ms (typical)
– Chip-Erase Time: 70 ms (typical)
– Byte-Program Time: 14 µs (typical)
– Chip Rewrite Time: 15 seconds (typical)
– Single-pulse Program or Erase
– Internal timing generation
• Two Operational Modes
– Firmware Hub Interface (FWH) Mode for
In-System operation
– Parallel Programming (PP) Mode for fast
production programming
• Firmware Hub Hardware Interface Mode
– 5-signal communication interface supporting byte Read
and Write
– 33 MHz clock frequency operation
– WP# and TBL# pins provide hardware write
protect for entire chip and/or top Boot Block
– Block Locking Register for all blocks
– Standard SDP Command Set
– Data# Polling and Toggle Bit for End-of-Writedetection
– 5 GPI pins for system design flexibility
– 4 ID pins for multi-chip selection
• Parallel Programming (PP) Mode
– 11-pin multiplexed address and
8-pin data I/O interface
– Supports fast In-System or PROM programming for
manufacturing
• CMOS and PCI I/O Compatibility
• Packages Available
– 32-lead PLCC
– 32-lead TSOP (8mm x 14mm)
– 40-lead TSOP (10mm x 20mm)
– Non-Pb (lead-free) packages available
• All non-Pb (lead-free) devices are RoHS compliant
©2011 Silicon Storage Technology, Inc.
www.microchip.com
DS25085A
10/11









No Preview Available !

49LF008A Даташит, Описание, Даташиты
A Microchip Technology Company
8 Mbit Firmware Hub
SST49LF008A
Product Description
Data Sheet
The SST49LF008A flash memory devices are designed to be read-compatible with the Intel® 82802
Firmware Hub (FWH) device for PC-BIOS application. These devices provide protection for the storage
and update of code and data in addition to adding system design flexibility through five general pur-
pose inputs. Two interface modes are supported by the SST49LF008A: Firmware Hub (FWH) Interface
mode for in-system programming and Parallel Programming (PP) mode for fast factory programming of
PC-BIOS applications.
The SST49LF008A flash memory devices are manufactured with SST’s proprietary, high performance
SuperFlash technology. The split-gate cell design and thick-oxide tunneling injector attain better reli-
ability and manufacturability compared with alternate approaches. The SST49LF008A devices signifi-
cantly improve performance and reliability, while lowering power consumption.
The SST49LF008A devices write (Program or Erase) with a single 3.0-3.6V power supply. They use
less energy during Erase and Program than alternative flash memory technologies. The total energy
consumed is a function of the applied voltage, current and time of application. Since for any given volt-
age range, the SuperFlash technology uses less current to program and has a shorter Erase time, the
total energy consumed during any Erase or Program operation is less than alternative flash memory
technologies. The SST49LF008A products provide a maximum Byte-Program time of 20 µsec. The
entire memory can be erased and programmed byte-by-byte typically in 15 seconds when using status
detection features such as Toggle Bit or Data# Polling to indicate the completion of Program operation.
The SuperFlash technology provides fixed Erase and Program times independent of the number of
Erase/Program cycles performed. Therefore the system software or hardware does not have to be cal-
ibrated or correlated to the cumulated number of Erase/Program cycles as is necessary with alterna-
tive flash memory technologies, whose Erase and Program time increase with accumulated Erase/
Program cycles.
To protect against inadvertent write, the SST49LF008A devices employ hardware and software data
(SDP) protection schemes. It is offered with typical endurance of 100,000 cycles. Data retention is
rated at greater than 100 years.
To meet high density, surface mount requirements, the SST49LF008A devices are offered in a 32-lead
TSOP package. In addition, the SST49LF008A is offered in 32-lead PLCC and 40-lead TSOP pack-
ages. See Figures 2, 3, and 4 for pin assignments and Table 1 for pin descriptions.
©2011 Silicon Storage Technology, Inc.
2
DS25085A
10/11









No Preview Available !

49LF008A Даташит, Описание, Даташиты
A Microchip Technology Company
Functional Block Diagram
8 Mbit Firmware Hub
SST49LF008A
Data Sheet
FWH[3:0]
CLK
FWH4
ID[3:0]
FGPI[4:0]
R/C#
A[10:0]
DQ[7:0]
OE#
WE#
TBL#
WP#
INIT#
FWH
Interface
X-Decoder
Address Buffers Latches
Programmer
Interface
Control Logic
IC RST#
SuperFlash
Memory
Y-Decoder
I/O Buffers and Data Latches
1161 B1.2
Figure 1: Functional Block Diagram
©2011 Silicon Storage Technology, Inc.
3
DS25085A
10/11










Скачать PDF:

[ 49LF008A.PDF Даташит ]

Номер в каталогеОписаниеПроизводители
49LF008ASST49LF008ASilicon Storage Technology
Silicon Storage Technology

Номер в каталоге Описание Производители
TL431

100 мА, регулируемый прецизионный шунтирующий регулятор

Unisonic Technologies
Unisonic Technologies
IRF840

8 А, 500 В, N-канальный МОП-транзистор

Vishay
Vishay
LM317

Линейный стабилизатор напряжения, 1,5 А

STMicroelectronics
STMicroelectronics

DataSheet26.com    |    2020    |

  Контакты    |    Поиск