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参数资料
| 型号： | EP224LC-7 |
| 厂商： | Altera Corporation |
| 英文描述： | Classic EPLDs |
| 中文描述： | 经典EPLDs |
| 文件页数： | 4/16页 |
| 文件大小： | 265K |
| 代理商： | EP224LC-7 |
4
Altera Corporation
EP220 & EP224 Classic EPLDs
Macrocells
Each macrocell includes a product-term block with 8
feeding an
OR
gate. One product term is dedicated to the Output Enable
(
OE
) control of the tri-state buffer. The global logic array allows each
product term to connect to the true or complement of each input—36
inputs for the EP220, 44 inputs for the EP224—and I/O feedback signal.
See
Figure 2
.
AND
product terms
Figure 2. EP220 & EP224 Macrocell
Macrocells can be individually configured for registered or combinatorial
operation, providing a mixed-mode operation not available in fixed-
architecture PAL devices. When registered output is selected, feedback
from the register to the logic array bypasses the output buffer. When
combinatorial output is selected, feedback comes from the I/O pin
through the output buffer, and can be used for bidirectional I/O. Unlike
PAL and GAL devices, all eight outputs on the EP220 and EP224 allow a
combinatorial feedback signal from the I/O pin to feed the logic array.
Data is clocked into the macrocell’s D register on the rising edge of the
global Clock.
Feedback
Select
D
Q
CLK
Inversion
Control
Programmable
Register
Output Enable
Feedback to
Logic Array
Pin, I/O, and
Macrocell Feedback
相关PDF资料 |
PDF描述 |
|---|---|
| EP224LC-7A | Classic EPLDs |
| EP224PC-10 | Classic EPLDs |
| EP224PC-10A | Classic EPLDs |
| EP224PC-12 | Classic EPLDs |
| EP224PC-7 | Classic EPLDs |
相关代理商/技术参数 |
参数描述 |
|---|---|
| EP224LC-7A | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| EP224PC-10 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| EP224PC-10A | 制造商:ALTERA 制造商全称:Altera Corporation 功能描述:Classic EPLDs |
| EP224PC-12 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| EP224PC-7 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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