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參數(shù)資料
| 型號(hào)： | AT27C400-90RI |
| 廠商： | ATMEL CORP |
| 元件分類： | DRAM |
| 英文描述： | 8-Channel Analog Multiplexer/Demultiplexer 16-PDIP -40 to 85 |
| 中文描述： | 256K X 16 OTPROM, 90 ns, PDSO44 |
| 封裝： | 0.525 INCH, PLASTIC, SOIC-44 |
| 文件頁(yè)數(shù)： | 2/10頁(yè) |
| 文件大?。?/td> | 184K |
| 代理商： | AT27C400-90RI |
AT27C400
2
Description
(Continued)
The AT27C400 can be organized as either word-wide or
byte-wide. The organization is selected via the BYTE/V
PP
pin. When BYTE/V
PP
is asserted high (V
IH
), the word-wide
organization is selected and the O15/A-1 pin is used for
O15 data output. When BYTE/V
PP
is asserted low (V
IL
), the
byte-wide organization is selected and the O15/A-1 pin is
used for the address pin A-1. When the AT27C400 is logi-
cally regarded as x16 (word-wide), but read in the byte-
wide mode, then with A-1 = V
IL
the lower 8 bits of the 16-bit
word are selected and with A-1 = V
IH
the upper 8 bits of the
16-bit word are selected.
In read mode, the AT27C400 typically consumes 15 mA.
Standby mode supply current is typically less than 10
μ
A
.
The AT27C400 is available in industry standard
JEDEC-approved one-time programmable (OTP) PDIP,
SOIC (SOP), and TSOP packages. The device features
two-line control (CE, OE) to eliminate bus contention in
high-speed systems.
With high density 256K word or 512K byte storage capabil-
ity, the AT27C400 allows firmware to be stored reliably and
to be accessed by the system without the delays of mass
storage media.
Atmel’s AT27C400 has additional features that ensure high
quality and efficient production use. The Rapid
Program-
ming Algorithm reduces the time required to program the
part and guarantees reliable programming. Programming
time is typically only 50
μ
s/word. The Integrated Product
Identification Code electronically identifies the device and
manufacturer. This feature is used by industry standard
programming equipment to select the proper programming
algorithms and voltages.
System Considerations
Switching between active and standby conditions via the
Chip Enable pin may produce transient voltage excursions.
Unless accommodated by the system design, these tran-
sients may exceed data sheet limits, resulting in device
non-conformance. At a minimum, a 0.1
μ
F high frequency,
low inherent inductance, ceramic capacitor should be uti-
lized for each device. This capacitor should be connected
between the V
CC
and Ground terminals of the device, as
close to the device as possible. Additionally, to stabilize the
supply voltage level on printed circuit boards with large
EPROM arrays, a 4.7
μ
F bulk electrolytic capacitor should
be utilized, again connected between the V
CC
and Ground
terminals. This capacitor should be positioned as close as
possible to the point where the power supply is connected
to the array.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AT27C400-90TC | 8-Channel Analog Multiplexer/Demultiplexer 16-PDIP -40 to 85 |
| AT27C400-90TI | 8-Channel Analog Multiplexer/Demultiplexer 16-SO -40 to 85 |
| AT27C400-70 | Circular Connector; Body Material:Aluminum; Series:PT07; Number of Contacts:10; Connector Shell Size:12; Connecting Termination:Crimp; Circular Shell Style:Jam Nut Receptacle; Circular Contact Gender:Socket; Insert Arrangement:12-10 |
| AT27C400-90 | Circular Connector; No. of Contacts:22; Series:TVS06; Body Material:Metal; Connecting Termination:Crimp; Connector Shell Size:13; Circular Contact Gender:Pin; Circular Shell Style:Straight Plug; Insert Arrangement:13-35 |
| AT27C400-12RC | 4-Megabit 256K x 16 or 512K x 8 OTP EPROM |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AT27C409610JC | 制造商:ATMEL 功能描述:New |
| AT27C4096-10PC | 制造商:Atmel Corporation 功能描述:EPROM OTP 4M-Bit 256K x 16 100ns 40-Pin PDIP |
| AT27C409612JC | 制造商:Atmel Corporation 功能描述: |
| AT27C4096-12JC | 功能描述:可擦除可編程ROM 4M bit RoHS:否 制造商:Maxim Integrated 類型: 存儲(chǔ)容量:1024 bit 組織:1 K x 1 接口類型: 工作電流:5 uA 編程電壓: 工作電源電壓:2.8 V to 6 V 最大工作溫度:+ 85 C 安裝風(fēng)格:Through Hole 封裝 / 箱體:TO-92 |
| AT27C4096-12JI | 功能描述:可擦除可編程ROM 4M bit RoHS:否 制造商:Maxim Integrated 類型: 存儲(chǔ)容量:1024 bit 組織:1 K x 1 接口類型: 工作電流:5 uA 編程電壓: 工作電源電壓:2.8 V to 6 V 最大工作溫度:+ 85 C 安裝風(fēng)格:Through Hole 封裝 / 箱體:TO-92 |
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