參數(shù)資料
型號(hào): ATF2500C-20PU
廠商: Atmel
文件頁(yè)數(shù): 22/24頁(yè)
文件大小: 0K
描述: IC CPLD EE 20NS 40DIP
標(biāo)準(zhǔn)包裝: 100
系列: ATF2500C(L)
可編程類型: 系統(tǒng)內(nèi)可編程
最大延遲時(shí)間 tpd(1): 20.0ns
電壓電源 - 內(nèi)部: 4.5 V ~ 5.5 V
宏單元數(shù): 24
輸入/輸出數(shù): 24
工作溫度: -40°C ~ 85°C
安裝類型: 通孔
封裝/外殼: 40-DIP(0.600",15.24mm)
供應(yīng)商設(shè)備封裝: 40-PDIP
包裝: 管件
產(chǎn)品目錄頁(yè)面: 608 (CN2011-ZH PDF)
7
0777K–PLD–1/24/08
ATF2500C
7.
Security Fuse Usage
A single fuse is provided to prevent unauthorized copying of ATF2500C fuse patterns. Once pro-
grammed, the outputs will read programmed during verify.
The security fuse should be programmed last, as its effect is immediate.
The security fuse also inhibits Preload and Q2 observability.
8.
Bus-friendly Pin-keeper Input and I/O
All ATF2500C family members have programmable internal input and I/O pin-keeper circuits.
The default condition, including when using the AT2500C/CQ family to replace the AT2500B/BQ
or AT2500H, is that the pin-keepers are not activated.
When pin-keepers are active, inputs or I/Os not being driven externally will maintain their last
driven state. This ensures that all logic array inputs and device outputs are known states. Pin-
keepers are relatively weak active circuits that can be easily overridden by TTL-compatible driv-
ers (see input and I/O diagrams below).
Enabling or disabling of the pin-keeper circuits is controlled by the device type chosen in the
logic compiler device selection menu. Please refer to the Software Compiler Mode Selection
table for more details. Once the pin-keeper circuits are disabled, normal termination procedures
required for unused inputs and I/Os.
Figure 8-1.
Input Diagram
PROGRAMMABLE
OPTION
相關(guān)PDF資料
PDF描述
R2S-2405-R CONV DC/DC 2W 5V OUT SMD
ACC28DRTS-S734 CONN EDGECARD 56POS DIP .100 SLD
RBB106DHFT-S621 EDGECARD 212PS .050 SMD W/O PST
MAX8885EUK25+T IC REG LDO 2.5V .15A SOT23-5
TAS106K050P1F-F CAP TANT 10UF 50V 10% AXIAL
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ATF2500CL-20JC 功能描述:IC CPLD 24 MACRO 20NS 40PLCC 制造商:microchip technology 系列:ATF2500C(L) 包裝:管件 零件狀態(tài):停產(chǎn) 可編程類型:系統(tǒng)內(nèi)可編程 延遲時(shí)間 tpd(1)最大值:20.0ns 電源電壓 - 內(nèi)部:4.75 V ~ 5.25 V 宏單元數(shù):24 I/O 數(shù):24 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:44-LCC(J 形引線) 供應(yīng)商器件封裝:44-PLCC(16.58x16.58) 基本零件編號(hào):ATF2500 標(biāo)準(zhǔn)包裝:27
ATF25100 制造商:未知廠家 制造商全稱:未知廠家 功能描述:TRANSISTOR | JFET | N-CHANNEL | 50MA I(DSS) | CHIP
ATF25170 制造商:未知廠家 制造商全稱:未知廠家 功能描述:TRANSISTOR | JFET | N-CHANNEL | 50MA I(DSS) | MICRO-XVAR
ATF-25170 制造商:AGILENT 制造商全稱:AGILENT 功能描述:0.5-10 GHz Low Noise Gallium Arsenide FET
ATF25570 制造商:未知廠家 制造商全稱:未知廠家 功能描述:TRANSISTOR | JFET | N-CHANNEL | 50MA I(DSS) | MICRO-XVAR