- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄370628 > HM628128A (Hitachi,Ltd.) 131,072-word X 8-bit High Speed CMOS Static RAM PDF資料下載
參數(shù)資料
Write Timing Waveform (2)
(
OE
low Fixed)
Notes: 1. A write occurs during the overlap of a low
CS1
, a high CS2, and a low
WE
. A write begins at the
latest transition among
CS1
going low, CS2 going high, and
WE
going low. A write ends at the
earliest transition among
CS1
going high, CS2 going low, and
WE
going high. t
WP
is measured
from the beginning of write to the end of write.
2. t
CW
is measured from the later of
CS1
going low or CS2 going high to the end of write.
3. t
AS
is measured from the address valid to the beginning of write.
4. t
WR
is measured from the earliest of
CS1
or
WE
going high or CS2 going low to the end of write
cycle.
5. During this period, I/O pins are in the output state; therefore, the input signals of the opposite
phase to the outputs must not be applied.
6. If the
CS1
goes low simultaneously with
WE
going low or after the
WE
going low, the outputs
remain in a high impedance state.
7. Dout is the same phase of the latest written data in this write cycle.
8. Dout is the read data of next address.
9. If
CS1
is low and CS2 high during this period, I/O pins are in the output state. Therefore, the
input signals of opposite phase to the outputs must not be applied to them.
10.This parameter is sampled and not 100% tested.
11.In the write cycle with
OE
low fixed, t
WP
must satisfy the following equation to avoid a problem of
11
HM628128A Series
Address
CS1
WE
Dout
Din
t
WC
t
CW
t
WR
t
AW
t
WP
t
AS
t
WHZ
t
OW
t
OH
t
DW
t
DH
*9
*7
*8
*5
*1 *11
*6
*4
Address Valid
Data Valid
CS2
*2
*3
High Impedance
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| HM628128ALFP-10 | 131,072-word X 8-bit High Speed CMOS Static RAM |
| HM628128ALFP-10L | 131,072-word X 8-bit High Speed CMOS Static RAM |
| HM628128ALFP-10SL | 131,072-word X 8-bit High Speed CMOS Static RAM |
| HM628128ALFP-5 | 131,072-word X 8-bit High Speed CMOS Static RAM |
| HM628128ALFP-5L | 131,072-word X 8-bit High Speed CMOS Static RAM |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HM628128ALFP-10 | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:131,072-word X 8-bit High Speed CMOS Static RAM |
| HM628128ALFP-10L | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:131,072-word X 8-bit High Speed CMOS Static RAM |
| HM628128ALFP-10SL | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:131,072-word X 8-bit High Speed CMOS Static RAM |
| HM628128ALFP-5 | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:131,072-word X 8-bit High Speed CMOS Static RAM |
| HM628128ALFP-5L | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:131,072-word X 8-bit High Speed CMOS Static RAM |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。