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參數(shù)資料
| 型號(hào)： | AM27C256-200DC |
| 廠商： | SPANSION LLC |
| 元件分類： | PROM |
| 英文描述： | UVPROM, CDIP28 |
| 封裝： | CERAMIC, DIP-28 |
| 文件頁數(shù)： | 9/12頁 |
| 文件大?。?/td> | 575K |
| 代理商： | AM27C256-200DC |
6
Am27C256
connection to all devices in the array and connected to
the READ line from the system control bus. This as-
sures that all deselected memory devices are in their
low-power standby mode and that the output pins are
only active when data is desired from a particular mem-
ory device.
System Applications
During the switch between active and standby condi-
tions, transient current peaks are produced on the ris-
ing and falling edges of Chip Enable. The magnitude of
these transient current peaks is dependent on the out-
put capacitance loading of the device. At a minimum, a
0.1 F ceramic capacitor (high frequency, low inherent
inductance) should be used on each device between
VCC and VSS to minimize transient effects. In addition,
to overcome the voltage drop caused by the inductive
effects of the printed circuit board traces on EPROM ar-
rays, a 4.7 F bulk electrolytic capacitor should be used
between VCC and VSS for each eight devices. The loca-
tion of the capacitor should be close to where the
power supply is connected to the array.
MODE SELECT TABLE
Notes:
1. VH = 12.0 V ± 0.5 V.
2. X = Either VIH or VIL.
3. A1–A8 and A10–14 = VIL
4. See DC Programming Characteristics for VPP voltage during programming.
Mode
CE#
OE#
A0
A9
VPP
Outputs
Read
VIL
XX
X
DOUT
Output Disable
X
VIH
X
High Z
Standby (TTL)
VIH
X
High Z
Standby (CMOS)
VCC ± 0.3 V
X
High Z
Program
VIL
VIH
XX
VPP
DIN
Program Verify
VIH
VIL
XX
VPP
DOUT
Program Inhibit
VIH
XX
VPP
High Z
Autoselect
(Note 3)
Manufacturer Code
VIL
VH
X
01h
Device Code
VIL
VIH
VH
X
10h
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AM27C4096-155LC | 256K X 16 UVPROM, 150 ns, CQCC44 |
| AM27C4096-170JC | 256K X 16 OTPROM, 170 ns, PQCC44 |
| AM27C64-305DCB | 8K X 8 UVPROM, 300 ns, CDIP28 |
| AM27F512-150DC | 64K X 8 FLASH 12V PROM, 150 ns, CDIP28 |
| AM27F512-155LI | 64K X 8 FLASH 12V PROM, 150 ns, CQCC32 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AM27C256-200DE | 制造商:Advanced Micro Devices 功能描述:EPROM, 32K x 8, 28 Pin, Ceramic, DIP |
| AM27C256200DI | 制造商:AMD 功能描述:Programmed |
| AM27C256-200DI | 制造商:Rochester Electronics LLC 功能描述: |
| AM27C256-200JC | 制造商:Advanced Micro Devices 功能描述:32K X 8 OTPROM, 200 ns, PQCC32 |
| AM27C256-200LC | 制造商:Advanced Micro Devices 功能描述:32K X 8 UVPROM, 200 ns, CQCC32 |
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