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PALCE20V8_04 Datasheet, PDF (1/14 Pages) Cypress Semiconductor – Flash-Erasable Reprogrammable CMOS PAL® Device | |||
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PALCE20V8
Flash-Erasable Reprogrammable
CMOS PAL® Device
Features
⢠Active pull-up on data input pins
⢠Low power version (20V8L)
â 55 mA max. commercial (15, 25 ns)
â 65 mA max. military/industrial
(15, 25 ns)
⢠Standard version has low power
â 90 mA max. commercial
(15, 25 ns)
â 115 mA max. commercial (10 ns)
â 130 mA max. military/industrial (15, 25 ns)
⢠CMOS Flash technology for electrical erasability and
reprogrammability
⢠User-programmable macrocell
â Output polarity control
â Individually selectable for registered or combina-
torial operation
⢠QSOP package available
â 10, 15, and 25 ns comâl version
â 15, and 25 ns military/industrial versions
⢠High reliability
â Proven Flash technology
â 100% programming and functional testing
Functional Description
The Cypress PALCE20V8 is a CMOS Flash Erasable
second-generation programmable array logic device. It is
implemented with the familiar sum-of-product (AND-OR) logic
structure 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
carrier, 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 reprogrammed. The programmable macrocell
enables the device 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
20
21
22
23
24
OE/I11
I12
I/O0
I/O1
I/O2
I/O3
I/O4
I/O5
I/O6
I/O7
I13
VCC
Cypress Semiconductor Corporation ⢠3901 North First Street ⢠San Jose, CA 95134 ⢠408-943-2600
Document #: 38-03026 Rev. *B
Revised April 19, 2004
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