PALCE20V8 Datasheet

  • PALCE20V8

  • Flash Erasable,Reprogrammable CMOS PAL Device

  • 286.67KB

  • Cypress

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20V8
PALCE20V8
Flash Erasable,
Reprogrammable CMOS PAL
铮?/div>
Device
Features
鈥?Active pull-up on data input pins
鈥?Low power version (20V8L)
鈥?55 mA max. commercial (15, 25 ns)
鈥?65 mA max. military/industrial
(15, 25 ns)
鈥?Standard version has low power
鈥?90 mA max. commercial
(15, 25 ns)
鈥?115 mA max. commercial (10 ns)
鈥?130 mA max. military/industrial (15, 25 ns)
鈥?CMOS Flash technology for electrical erasability and
reprogrammability
鈥?User-programmable macrocell
鈥?Output polarity control
鈥?Individually selectable for registered or combinato-
rial operation
鈥?QSOP package available
鈥?10, 15, and 25 ns com鈥檒 version
鈥?15, and 25 ns military/industrial versions
鈥?High reliability
鈥?Proven Flash technology
鈥?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.
Logic Block Diagram (PDIP/CDIP/QSOP)
GND
12
I
10
11
I
9
10
I
8
9
I
7
8
I
6
7
I
5
6
I
4
5
I
3
4
I
2
3
I
1
2
CLK/I
0
1
PROGRAMMABLE
AND ARRAY
(64 x 40)
8
8
8
8
8
8
8
8
MUX
Macrocell
Macrocell
Macrocell
Macrocell
Macrocell
Macrocell
Macrocell
Macrocell
MUX
13
OE/I
11
14
I
12
15
I/O
0
16
I/O
1
17
I/O
2
18
I/O
3
19
I/O
4
20
I/O
5
21
I/O
6
22
I/O
7
23
I
13
24
V
CC
20V8鈥?
PAL is a registered trademark of Advanced Micro Devices, Inc.
Cypress Semiconductor Corporation
Document #: 38-03026 Rev. **
鈥?/div>
3901 North First Street
鈥?/div>
San Jose
鈥?/div>
CA 95134 鈥?408-943-2600
Revised March 26, 1997

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