PALCE20V8L-25PI Datasheet PDF - Cypress Semiconductor
| Part Number | PALCE20V8L-25PI | |
| Description | Flash Erasable/ Reprogrammable CMOS PAL Device | |
| Manufacturers | Cypress Semiconductor | |
| Logo |  |
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20V8
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)
• 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.
Logic Block Diagram (PDIP/CDIP/QSOP)
GND
12
I10
11
I9
10
I8 I7 I6
9 87
I5 I4
65
I3 I2 I1 CLK/I0
4 3 21
PROGRAMMABLE
AND ARRAY
(64 x 40)
8 8 8 88 8 8
8
MUX
Macrocell
Macrocell
Macrocell
Macrocell
Macrocell
Macrocell
Macrocell
Macrocell
MUX
13 14
15
16
17
18
OE/I11
I12
I/O0
I/O1
I/O2
I/O3
PAL is a registered trademark of Advanced Micro Devices, Inc.
19
I/O4
20 21 22 23 24
I/O5 I/O6 I/O7 I13 VCC
20V8–1
Cypress Semiconductor Corporation • 3901 North First Street • San Jose • CA 95134 • 408-943-2600
Document #: 38-03026 Rev. **
Revised March 26, 1997
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AC Test Loads and Waveforms
3.0V
GND
≤ 2 ns
ALL INPUT PULSES
90%
10%
90%
10%
≤ 2 ns
20V8–5
5V
OUTPUT
S1
R1
TEST POINT
R2 CL
20V8–6
PALCE20V8
Specification
tPD, tCO
tPZX, tEA
tPXZ, tER
S1
Closed
Z ➧ H: Open
Z ➧ L: Closed
H ➧ Z: Open
L ➧ Z: Closed
CL
50 pF
5 pF
Commercial
R1
200Ω
R2
390Ω
Military
R1
390Ω
R2
750Ω
Measured Output Value
1.5V
1.5V
H ➧ Z: VOH − 0.5V
L ➧ Z: VOL + 0.5V
Document #: 38-03026 Rev. **
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Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for PALCE20V8L-25PI electronic component. |
| Information | Total 14 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ PALCE20V8L-25PI.PDF Datasheet ] | |
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| Part Number | Description | MFRS |
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| PALCE20V8L-25PI | The function is Flash Erasable/ Reprogrammable CMOS PAL Device. Cypress Semiconductor | |
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