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參數(shù)資料
| 型號(hào)： | 20V8 |
| 廠商： | Cypress Semiconductor Corp. |
| 元件分類(lèi)： | PAL |
| 英文描述： | Flash Erasable, Reprogrammable CMOS PAL Device |
| 中文描述： | 閃光可擦除，可再編程的CMOS PAL制式設(shè)備 |
| 文件頁(yè)數(shù)： | 1/14頁(yè) |
| 文件大?。?/td> | 352K |
| 代理商： | 20V8 |
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Flash Erasable,
Reprogrammable CMOS PAL
Device
PALCE20V8
Cypress Semiconductor Corporation
Document #: 38-03026 Rev. **
3901 North First Street
San Jose
CA 95134
408-943-2600
Revised March 26, 1997
20V8
Features
Active pull-up on data input pins
Low power version (20V8L)
—55 mA max. commercial (15, 25 ns)
—65 mA max. military/industrial
(15, 25 ns)
Standard version has low power
—90 mA max. commercial
(15, 25 ns)
—115 mA max. commercial (10 ns)
—130 mA max. military/industrial (15, 25 ns)
CMOS Flash technology for electrical erasability and
reprogrammability
User-programmable macrocell
—Output polarity control
—Individually selectable for registered or combinato-
rial operation
QSOP package available
—10, 15, and 25 ns com’l version
—15, and 25 ns military/industrial versions
High reliability
—Proven Flash technology
—100% programming and functional testing
Functional Description
The Cypress PALCE20V8 is a CMOS Flash Erasable sec-
ond-generation programmable array logic device. It is imple-
mented with the familiar sum-of-product (AND-OR) logic struc-
ture and the programmable macrocell.
The PALCE20V8 is executed in a 24-pin 300-mil molded DIP,
a 300-mil cerdip, a 28-lead square ceramic leadless chip car-
rier, a 28-lead square plastic leaded chip carrier, and a 24-lead
quarter size outline. The device provides up to 20 inputs and
8 outputs. The PALCE20V8 can be electrically erased and re-
programmed. The programmable macrocell enables the de-
vice to function as a superset to the familiar 24-pin PLDs such
as 20L8, 20R8, 20R6, 20R4.
PAL is a registered trademark of Advanced Micro Devices, Inc.
LogicBlockDiagram(PDIP/CDIP/QSOP)
20V8
–
1
8
8
8
8
8
8
8
8
10
9
8
7
6
5
4
3
2
1
13
15
16
17
18
19
20
21
22
23
PRAND ARRAY
(64 x 40)
Macrocell
Macrocell
Macrocell
Macrocell
Macrocell
Macrocell
Macrocell
Macrocell
I
9
I
8
I
7
I
6
I
5
I
4
I
3
I
2
I
1
CLK/I
0
OE/I
11
I/O
0
I/O
1
I/O
2
I/O
3
I/O
4
I/O
5
I/O
6
I/O
7
I
13
12
GND
11
I
10
MUX
24
V
CC
MUX
14
I
12
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