参数资料
型号: ATF16V8B-15JU
厂商: Atmel
文件页数: 25/26页
文件大小: 0K
描述: IC PLD 15NS 20PLCC
标准包装: 48
系列: 16V8
可编程类型: EE PLD
宏单元数: 8
输入电压: 5V
速度: 15ns
安装类型: 表面贴装
封装/外壳: 20-LCC(J 形引线)
供应商设备封装: 20-PLCC
包装: 管件
8
0364J–PLD–7/05
ATF16V8B/BQ/BQL
6.
Electronic Signature Word
There are 64 bits of programmable memory that are always available to the user, even if the
device is secured. These bits can be used for user-specific data.
7.
Programming/Erasing
Programming/erasing is performed using standard PLD programmers. See CMOS PLD Pro-
gramming Hardware and Software Support for information on software/programming.
8.
Input and I/O Pull-ups
All ATF16V8B family members have internal input and I/O pull-up resistors. Therefore, when-
ever inputs or I/Os are not being driven externally, they will float to V
CC. This ensures that all
logic array inputs are at known states. These are relatively weak active pull-ups that can easily
be overdriven by TTL-compatible drivers (see input and I/O diagrams below).
Figure 8-1.
Input Diagram
Figure 8-2.
I/O Diagram
9.
Functional Logic Diagram Description
The Logic Option and Functional Diagrams describe the ATF16V8B architecture. Eight config-
urable macrocells can be configured as a registered output, combinatorial I/O, combinatorial
output, or dedicated input.
The ATF16V8B can be configured in one of three different modes. Each mode makes the
ATF16V8B look like a different device. Most PLD compilers can choose the right mode automat-
ically. The user can also force the selection by supplying the compiler with a mode selection.
The determining factors would be the usage of register versus combinatorial outputs and dedi-
cated outputs versus outputs with output enable control.
The ATF16V8B universal architecture can be programmed to emulate many 20-pin PAL
devices. These architectural subsets can be found in each of the configuration modes described
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ATF16V8B-15PI 功能描述:EEPLD - 电子擦除可编程逻辑设备 10NS250 GATES 20 PIN5V - 15NS RoHS:否 制造商:Atmel 逻辑系列:ATF16V8BQL 最大工作频率:62 MHz 可编程输入/输出端数量:20 电源电流:20 mA 延迟时间:15 ns 每个宏指令的积项数:8 电源电压-最大:5.5 V 电源电压-最小:4.5 V 大电池数量:8 最小工作温度:- 40 C 最大工作温度:+ 85 C 安装风格:Through Hole 封装 / 箱体:PDIP-20
ATF16V8B-15PU 功能描述:EEPLD - 电子擦除可编程逻辑设备 15 ns 20 I/O Pins 8 macorcells 8 reg RoHS:否 制造商:Atmel 逻辑系列:ATF16V8BQL 最大工作频率:62 MHz 可编程输入/输出端数量:20 电源电流:20 mA 延迟时间:15 ns 每个宏指令的积项数:8 电源电压-最大:5.5 V 电源电压-最小:4.5 V 大电池数量:8 最小工作温度:- 40 C 最大工作温度:+ 85 C 安装风格:Through Hole 封装 / 箱体:PDIP-20