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49LF003A の電気的特性と機能

49LF003AのメーカーはSilicon Storage Technologyです、この部品の機能は「SST49LF003A」です。


製品の詳細 ( Datasheet PDF )

部品番号 49LF003A
部品説明 SST49LF003A
メーカ Silicon Storage Technology
ロゴ Silicon Storage Technology ロゴ 




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49LF003A Datasheet, 49LF003A PDF,ピン配置, 機能
2 Mbit / 3 Mbit / 4 Mbit / 8 Mbit Firmware Hub
SST49LF002A / SST49LF003A / SST49LF004A / SST49LF008A
SST49LF002A / 003A / 004A / 008A2 Mb / 3 Mb / 4 Mb / 8 Mb Firmware Hub for Intel 8xx Chipsets
FEATURES:
Advance Information
• Firmware Hub for Intel 8xx Chipsets
• 2 Mbit, 3 Mbit, 4 Mbit, or 8 Mbit SuperFlash
memory array for code/data storage
– SST49LF002A: 256K x8 (2 Mbit)
– SST49LF003A: 384K x8 (3 Mbit)
– SST49LF004A: 512K x8 (4 Mbit)
– SST49LF008A: 1024K x8 (8 Mbit)
• Flexible Erase Capability
– Uniform 4 KByte Sectors
– Uniform 16 KByte overlay blocks for
SST49LF002A
– Uniform 64 KByte overlay blocks for
SST49LF003A/004A/008A
– Top Boot Block protection
- 16 KByte for SST49LF002A
- 64 KByte for SST49LF003A/004A/008A
– 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:
SST49LF002A: 4 seconds (typical)
SST49LF003A: 6 seconds (typical)
SST49LF004A: 8 seconds (typical)
SST49LF008A: 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-Write
detection
– 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)
PRODUCT DESCRIPTION
The SST49LF00xA flash memory devices are designed
to be read-compatible with the Intel 82802 Firmware Hub
(FWH) device for PC-BIOS application. It provides pro-
tection 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 sup-
ported by the SST49LF00xA: Firmware Hub (FWH)
Interface Mode for In-System programming and Parallel
Programming (PP) Mode for fast factory programming of
PC-BIOS applications.
The SST49LF00xA flash memory devices are manufac-
tured with SST’s proprietary, high performance Super-
Flash Technology. The split-gate cell design and thick
oxide tunneling injector attain better reliability and manu-
facturability compared with alternate approaches. The
SST49LF00xA devices significantly improve performance
and reliability, while lowering power consumption. The
SST49LF00xA devices write (Program or Erase) with a
single 3.0-3.6V power supply. It uses less energy during
Erase and Program than alternative flash memory tech-
nologies. The total energy consumed is a function of the
applied voltage, current and time of application. Since for
©2001 Silicon Storage Technology, Inc.
S71161-06-000 9/01
504
1
The SST logo and SuperFlash are registered trademarks of Silicon Storage Technology, Inc.
MPF is a trademark of Silicon Storage Technology, Inc. Intel is a registered trademark of Intel Corporation.
These specifications are subject to change without notice.

1 Page





49LF003A pdf, ピン配列
2 Mbit / 3 Mbit / 4 Mbit / 8 Mbit Firmware Hub
SST49LF002A / SST49LF003A / SST49LF004A / SST49LF008A
Advance Information
TABLE 1: FWH READ CYCLE
Clock
Cycle
Field
Name
Field Contents
FWH[3:0]1
FWH[3:0]
Direction Comments
1 START
1101
IN FWH4 must be active (low) for the part to respond. Only the
last start field (before FWH4 transitioning high) should be
recognized. The START field contents indicate a FWH
memory read cycle.
2
IDSEL
0000 to 1111
IN Indicates which FWH device should respond. If the to IDSEL (ID
select) field matches the value ID[3:0], then that particular device
will respond to the whole bus cycle.
3-9 IMADDR
YYYY
IN These seven clock cycles make up the 28-bit memory
address. YYYY is one nibble of the entire address.
Addresses are transferred most-significant nibble first.
10
IMSIZE
0000 (1 byte)
IN A field of this size indicates how many bytes will be or trans-
ferred during multi-byte operations. The SST49LF00xA will
only support single-byte operation. IMSIZE=0000b
11 TAR0
1111
IN
then Float
In this clock cycle, the master (Intel ICH) has driven the bus
then float to all ‘1’s and then floats the bus, prior to the next
clock cycle. This is the first part of the bus “turnaround
cycle.”
12
TAR1
1111 (float)
Float
The SST49LF00xA takes control of the bus during this
then OUT cycle. During the next clock cycle, it will be driving “sync
data.”
13
RSYNC
0000 (READY)
OUT
During this clock cycle, the FWH will generate a “ready-
sync” (RSYNC) indicating that the least-significant nibble of
the least-significant byte will be available during the next
clock cycle.
14 DATA
YYYY
OUT
YYYY is the least-significant nibble of the least-significant
data byte.
15 DATA
YYYY
OUT
YYYY is the most-significant nibble of the least-significant
data byte.
16 TAR0
1111
OUT
then Float
In this clock cycle, the SST49LF00xA has driven the bus to
all ones and then floats the bus prior to the next clock cycle.
This is the first part of the bus “turnaround cycle.”
17
TAR1
1111 (float)
Float then The master (Intel ICH) resumes control of the bus during
IN this cycle.
1. Field contents are valid on the rising edge of the present clock cycle.
T1.3 504
CLK
FWH4
FWH[3:0]
STR IDS
IMADDR
FIGURE 1: SINGLE-BYTE READ WAVEFORMS
IMS TAR RSYNC DATA
TAR
504 ILL F59.1
©2001 Silicon Storage Technology, Inc.
3
S71161-06-000 9/01 504


3Pages


49LF003A 電子部品, 半導体
2 Mbit / 3 Mbit / 4 Mbit / 8 Mbit Firmware Hub
SST49LF002A / SST49LF003A / SST49LF004A / SST49LF008A
Advance Information
Write Operation Status Detection
The SST49LF00xA device provides two software means to
detect the completion of a Write (Program or Erase) cycle,
in order to optimize the system write cycle time. The soft-
ware detection includes two status bits: Data# Polling
(DQ7) and Toggle Bit (DQ6). The End-of-Write detection
mode is incorporated into the FWH Read Cycle. The actual
completion of the nonvolatile write is asynchronous with the
system; therefore, either a Data# Polling or Toggle Bit read
may be simultaneous with the completion of the Write
cycle. If this occurs, the system may possibly get an errone-
ous result, i.e., valid data may appear to conflict with either
DQ7 or DQ6. In order to prevent spurious rejection, if an
erroneous result occurs, the software routine should
include a loop to read the accessed location an additional
two (2) times. If both reads are valid, then the device has
completed the Write cycle, otherwise the rejection is valid.
Data# Polling (DQ7)
When the SST49LF00xA device is in the internal Program
operation, any attempt to read DQ7 will produce the com-
plement of the true data. Once the Program operation is
completed, DQ7 will produce true data. Note that even
though DQ7 may have valid data immediately following the
completion of an internal Write operation, the remaining
data outputs may still be invalid: valid data on the entire
data bus will appear in subsequent successive Read
cycles. During internal Erase operation, any attempt to
read DQ7 will produce a ‘0’. Once the internal Erase opera-
tion is completed, DQ7 will produce a ‘1’. Proper status will
not be given using Data# Polling if the address is in the
invalid range.
Toggle Bit (DQ6)
During the internal Program or Erase operation, any con-
secutive attempts to read DQ6 will produce alternating
‘0’s and ‘1’s, i.e., toggling between 0 and 1. When the
internal Program or Erase operation is completed, the
toggling will stop.
Multiple Device Selection
The four ID pins, ID[3:0], allow multiple devices to be
attached to the same bus by using different ID strapping in
a system. When the SST49LF00xA is used as a boot
device, ID[3:0] must be strapped as 0000, all subsequent
devices should use a sequential up-count strapping (i.e.
0001, 0010, 0011, etc.). The SST49LF00xA will compare
the strapping values, if there is a mismatch, the device will
ignore the remainder of the cycle and go into standby
mode. For further information regarding FWH device map-
ping and paging, please refer to the Intel 82801(ICH) I/O
Controller Hub documentation. Since there is no ID support
in PP Mode, to program multiple devices a stand-alone
PROM programmer is recommended.
REGISTERS
There are three types of registers available on the
SST49LF00xA, the General Purpose Inputs Register,
Block Locking Registers and the JEDEC ID Registers.
These registers appear at their respective address location
in the 4 GByte system memory map. Unused register loca-
tions will read as 00H. Any attempt to read or write any reg-
isters during internal Write operation will be ignored.
General Purpose Inputs Register
The GPI_REG (General Purpose Inputs Register) passes
the state of FGPI[4:0] pins at power-up on the
SST49LF00xA. It is recommended that the FGPI[4:0] pins
are in the desired state before FWH4 is brought low for the
beginning of the bus cycle, and remain in that state until the
end of the cycle. There is no default value since this is a
pass-through register. The GPI register for the boot device
appears at FFBC0100H in the 4 GByte system memory
map, and will appear elsewhere if the device is not the boot
device. Register is not available for read when the device is
in Erase/Program operation. See Table 3 for the GPI_REG
bits and function.
TABLE 3: GENERAL PURPOSE INPUTS REGISTER
Pin #
Bit Function
7:5 Reserved
4 FGPI[4]
Reads status of general
purpose input pin
3 FGPI[3]
Reads status of general
purpose input pin
2 FGPI[2]
Reads status of general
purpose input pin
1 FGPI[1]
Reads status of general
purpose input pin
0 FGPI[0]
Reads status of general
purpose input pin
32-PLCC
-
30
32-TSOP
-
6
3 11
4 12
5 13
6 14
T3.2 504
©2001 Silicon Storage Technology, Inc.
6
S71161-06-000 9/01 504

6 Page



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部品番号部品説明メーカ
49LF003A

SST49LF003A

Silicon Storage Technology
Silicon Storage Technology


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