- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄375306 > AM49BDS640AHD8I (SPANSION LLC) Stacked Multichip Package (MCP), Flash Memory and pSRAM CMOS 1.8 Volt-only Simultaneous Read/Write PDF資料下載
參數(shù)資料
| 型號： | AM49BDS640AHD8I |
| 廠商： | SPANSION LLC |
| 元件分類： | 存儲器 |
| 英文描述： | Stacked Multichip Package (MCP), Flash Memory and pSRAM CMOS 1.8 Volt-only Simultaneous Read/Write |
| 中文描述： | SPECIALTY MEMORY CIRCUIT, PBGA89 |
| 封裝： | 10 X 8 MM, FBGA-89 |
| 文件頁數(shù)： | 17/84頁 |
| 文件大小： | 763K |
| 代理商： | AM49BDS640AHD8I |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁當(dāng)前第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁
December 5, 2003
Am49BDS640AH
15
A D V A N C E I N F O R M A T I O N
“bank address” is the address bits required to uniquely
select a bank. Similarly, a “sector address” is the
address bits required to uniquely select a sector.
I
CC2
in the
“DC Characteristics” section on page 45
represents the active current specification for the write
mode. The AC Characteristics section contains timing
specification tables and timing diagrams for write oper-
ations.
Accelerated Program Operation
The device offers accelerated program operations
through the ACC function. ACC is primarily intended to
allow faster manufacturing throughput at the factory.
If the system asserts V
HH
on this input, the device auto-
matically enters the aforementioned Unlock Bypass
mode and uses the higher voltage on the input to
reduce the time required for program operations. The
system would use a two-cycle program command
sequence as required by the Unlock Bypass mode.
Removing V
HH
from the ACC input returns the device
to normal operation. Note that sectors must be
unlocked prior to raising ACC to V
HH
. Note that the
ACC pin must not be at V
HH
for operations other than
accelerated programming, or device damage may
result. In addition, the ACC pin must not be left floating
or unconnected; inconsistent behavior of the device
may result
When at V
IL
, ACC locks all sectors. ACC should be at
V
IH
for all other conditions.
Autoselect Mode
The autoselect mode provides manufacturer and de-
vice identification, and sector protection verification,
through identifier codes output from the internal regis-
ter (which is separate from the memory array) on
DQ15–DQ0. This mode is primarily intended for pro-
gramming equipment to automatically match a device
to be programmed with its corresponding program-
ming algorithm. However, the autoselect codes can
also be accessed in-system through the command
register.
When using programming equipment, the autoselect
mode requires V
ID
on address pin A9. Address pins
must be as shown in
Table 3, “Am49BDS640AH Boot
Sector/Sector Block Addresses for Protection/Unpro-
tection,” on page 16
. In addition, when verifying sector
protection, the sector address must appear on the ap-
propriate highest order address bits (see
Table 3,
“Am49BDS640AH Boot Sector/Sector Block Ad-
dresses for Protection/Unprotection,” on page 16
).
Table 3
shows the remaining address bits that are
don’t care. When all necessary bits have been set as
required, the programming equipment may then read
the corresponding identifier code on DQ15–DQ0.
However, the autoselect codes can also be accessed
in-system through the command register, for instances
when the device is erased or programmed in a system
without access to high voltage on the A9 pin. The com-
mand sequence is illustrated in
Table 15, “Command
Definitions,” on page 36
. Note that if a Bank Address
(BA) on address bits A22, A21, and A20 is asserted
during the third write cycle of the autoselect command,
the host system can read autoselect data that bank
and then immediately read array data from the other
bank, without exiting the autoselect mode.
To access the autoselect codes in-system, the host
system can issue the autoselect command via the
command register, as shown in
Table 15, “Command
Definitions,” on page 36
. This method does not require
V
ID
. Autoselect mode may only be entered and used
when in the asynchronous read mode. Refer to the
“Autoselect Command Sequence” section on page 29
for more information.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AM49BDS640AHD9I | Stacked Multichip Package (MCP), Flash Memory and pSRAM CMOS 1.8 Volt-only Simultaneous Read/Write |
| AM49BDS640AHE8I | Stacked Multichip Package (MCP), Flash Memory and pSRAM CMOS 1.8 Volt-only Simultaneous Read/Write |
| AM49BDS640AHE9I | Stacked Multichip Package (MCP), Flash Memory and pSRAM CMOS 1.8 Volt-only Simultaneous Read/Write |
| AM49DL320BGT701 | Stacked Multi-Chip Package (MCP) Flash Memory and SRAM 32 Megabit (4 M x 8-Bit/2 M x 16-Bit) CMOS 3.0 Volt-only, Simultaneous |
| AM49DL320BGB701 | Stacked Multi-Chip Package (MCP) Flash Memory and SRAM 32 Megabit (4 M x 8-Bit/2 M x 16-Bit) CMOS 3.0 Volt-only, Simultaneous |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AM49BDS640AHD9I | 制造商:SPANSION 制造商全稱:SPANSION 功能描述:Stacked Multichip Package (MCP), Flash Memory and pSRAM CMOS 1.8 Volt-only Simultaneous Read/Write |
| AM49BDS640AHE8I | 制造商:SPANSION 制造商全稱:SPANSION 功能描述:Stacked Multichip Package (MCP), Flash Memory and pSRAM CMOS 1.8 Volt-only Simultaneous Read/Write |
| AM49BDS640AHE9I | 制造商:SPANSION 制造商全稱:SPANSION 功能描述:Stacked Multichip Package (MCP), Flash Memory and pSRAM CMOS 1.8 Volt-only Simultaneous Read/Write |
| AM49DL3208G | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Am49DL3208G - Stacked Multi-Chip Package (MCP) Flash Memory and pSRAM |
| AM49DL320BG | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Am49DL320BG - Stacked Multi-Chip Package (MCP) Flash Memory and SRAM |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。