PAL20V8 Datasheet, PDF (1/13 Pages) Cypress Semiconductor – Flash Erasable, Reprogrammable CMOS PAL Device

1P AL CE 20 V8
fax id: 6010
PALCE20V8
Flash Erasable,
Reprogrammable CMOS PAL^® Device
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)
• 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
• 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
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
I₁₀
I₉
12
11
10
I₈
I₇
I₆
9
8
7
I₅
I₄
6
5
I₃
I₂
I₁
CLK/I₀
4
3
2
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
14
15
16
17
18
19
OE/I₁₁
I₁₂
I/O₀
I/O₁
I/O₂
I/O₃
I/O₄
PAL is a registered trademark of Advanced Micro Devices, Inc.
20
21
22
23
24
I/O₅
I/O₆
I/O₇
I₁₃
V_CC
20V8–1
Cypress Semiconductor Corporation • 3901 North First Street • San Jose • CA 95134 • 408-943-2600
June 1994 – Revised March 26, 1997