Lattice GAL20V8B-25LP High performance e2cmos pld generic array logicâ ¢ Datasheet

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Lead-Fage
P a c k ns
Optio le!
b
Availa
Features
GAL20V8
High Performance E2CMOS PLD
Generic Array Logic™
Functional Block Diagram
• HIGH PERFORMANCE E2CMOS® TECHNOLOGY
— 5 ns Maximum Propagation Delay
— Fmax = 166 MHz
— 4 ns Maximum from Clock Input to Data Output
— UltraMOS® Advanced CMOS Technology
I/CLK
I
IMUX
I
8 OLMC
I/O/Q
8
OLMC
I/O/Q
8
OLMC
8
OLMC
8
OLMC
8
OLMC
I
• E2 CELL TECHNOLOGY
— Reconfigurable Logic
— Reprogrammable Cells
— 100% Tested/100% Yields
— High Speed Electrical Erasure (<100ms)
— 20 Year Data Retention
PROGRAMMABLE
AND-ARRAY
(64 X 40)
I
• ACTIVE PULL-UPS ON ALL PINS
I
I
• EIGHT OUTPUT LOGIC MACROCELLS
— Maximum Flexibility for Complex Logic Designs
— Programmable Output Polarity
— Also Emulates 24-pin PAL® Devices with Full Function/
Fuse Map/Parametric Compatibility
I
I/O/Q
I/O/Q
I/O/Q
I/O/Q
I
• PRELOAD AND POWER-ON RESET OF ALL REGISTERS
— 100% Functional Testability
8 OLMC
I/O/Q
8
I/O/Q
I
• APPLICATIONS INCLUDE:
— DMA Control
— State Machine Control
— High Speed Graphics Processing
— Standard Logic Speed Upgrade
I
OLMC
OE
I
I
IMUX
I/OE
• ELECTRONIC SIGNATURE FOR IDENTIFICATION
• LEAD-FREE PACKAGE OPTIONS
Description
Pin Configuration
The GAL20V8C, at 5ns maximum propagation delay time, combines a high performance CMOS process with Electrically Erasable (E2) floating gate technology to provide the highest speed
performance available in the PLD market. High speed erase times
(<100ms) allow the devices to be reprogrammed quickly and efficiently.
DIP
PLCC
4
The generic architecture provides maximum design flexibility by
allowing the Output Logic Macrocell (OLMC) to be configured by
the user. An important subset of the many architecture configurations possible with the GAL20V8 are the PAL architectures listed
in the table of the macrocell description section. GAL20V8 devices
are capable of emulating any of these PAL architectures with full
function/fuse map/parametric compatibility.
I
2
28
I
I
7
GAL20V8
NC
I
Top View
9
23
21
I
I/O/Q
I
Vcc
I/O/Q
I/O/Q
I/O/Q
I/O/Q
I
I/O/Q
I
NC
I
I/O/Q
I
I/O/Q
I
I/O/Q
I
I/O/Q
I/O/Q
6
18
I/O/Q
I/O/Q
I/O/Q
19
18
16
NC
14
I
I
12
I/OE
Unique test circuitry and reprogrammable cells allow complete AC,
DC, and functional testing during manufacture. As a result, Lattice
Semiconductor delivers 100% field programmability and functionality of all GAL products. In addition, 100 erase/write cycles and
data retention in excess of 20 years are specified.
11
GAL
20V8
I
I/O/Q
GND
I
24
I
I
26
25
5
1
I
I/O/Q
I
Vcc
I/CLK
NC
I
I
I/CLK
Select devices have been discontinued.
See Ordering Information section for product status.
• 50% to 75% REDUCTION IN POWER FROM BIPOLAR
— 75mA Typ Icc on Low Power Device
— 45mA Typ Icc on Quarter Power Device
CLK
I
I
GND
12
13
I/OE
Copyright © 2006 Lattice Semiconductor Corp. All brand or product names are trademarks or registered trademarks of their respective holders. The specifications and information herein are subject
to change without notice.
LATTICE SEMICONDUCTOR CORP., 5555 Northeast Moore Ct., Hillsboro, Oregon 97124, U.S.A.
Tel. (503) 268-8000; 1-800-LATTICE; FAX (503) 268-8556; http://www.latticesemi.com
20v8_07
1
August 2006
Specifications GAL20V8
GAL20V8 Ordering Information
Conventional Packaging
Commercial Grade Specifications
Tpd (ns)
Tsu (ns)
Tco (ns)
Icc (mA)
Ordering #
1
5
3
4
115
GAL20V8C-5LJ
7.5
7
5
115
GAL20V8C-7LJ
15
25
10
12
15
7
10
12
28-Lead PLCC
28-Lead PLCC
1
115
GAL20V8B-7LP
24-Pin Plastic DIP
115
GAL20V8C-10LJ
28-Lead PLCC
115
GAL20V8B-10LP
24-Pin Plastic DIP
55
GAL20V8B-15QP
24-Pin Plastic DIP
55
GAL20V8B-15QJ
28-Lead PLCC
90
GAL20V8B-15LP
24-Pin Plastic DIP
90
GAL20V8B-15LJ
28-Lead PLCC
55
GAL20V8B-25QP
24-Pin Plastic DIP
55
GAL20V8B-25QJ
28-Lead PLCC
90
GAL20V8B-25LP
24-Pin Plastic DIP
90
GAL20V8B-25LJ
28-Lead PLCC
Industrial Grade Specifications
Tpd (ns)
Tsu (ns)
Tco (ns)
Icc (mA)
10
10
7
130
GAL20V8C-10LJI
28-Lead PLCC
130
GAL20V8B-10LPI1
24-Pin Plastic DIP
130
GAL20V8B-10LJI
28-Lead PLCC
15
20
25
12
13
15
10
11
12
Ordering #
Package
13 0
GAL20V8B-15LPI
24-Pin Plastic DIP
130
GAL20V8B-15LJI
28-Lead PLCC
65
GAL20V8B-20QPI
24-Pin Plastic DIP
65
GAL20V8B-20QJI
28-Lead PLCC
65
GAL20V8B-25QPI
24-Pin Plastic DIP
65
GAL20V8B-25QJI
28-Lead PLCC
130
GAL20V8B-25LPI
24-Pin Plastic DIP
130
GAL20V8B-25LJI
28-Lead PLCC
1. Discontinued per PCN #06-07. Contact Rochester Electronics for available inventory.
2
Select devices have been discontinued.
See Ordering Information section for product status.
10
Package
Specifications GAL20V8
Lead-Free Packaging
Commercial Grade Specifications
Tpd (ns)
Tsu (ns)
Tco (ns)
Icc (mA)
5
3
4
115
GAL20V8C-5LJN1
7.5
7
5
115
GAL20V8C-7LJN
Lead-Free 28-Lead PLCC
115
GAL20V8B-7LPN1
Lead-Free 24-Pin Plastic DIP
115
GAL20V8C-10LJN
Lead-Free 28-Lead PLCC
115
GAL20V8B-10LPN
Lead-Free 24-Pin Plastic DIP
55
GAL20V8B-15QJN
Lead-Free 28-Lead PLCC
55
GAL20V8B-15QPN
Lead-Free 24-Pin Plastic DIP
90
GAL20V8B-15LJN
Lead-Free 28-Lead PLCC
90
GAL20V8B-15LPN
Lead-Free 24-Pin Plastic DIP
55
GAL20V8B-25QJN
Lead-Free 28-Lead PLCC
55
GAL20V8B-25QPN
Lead-Free 24-Pin Plastic DIP
90
GAL20V8B-25LJN
Lead-Free 28-Lead PLCC
90
GAL20V8B-25LPN
Lead-Free 24-Pin Plastic DIP
10
7
15
12
10
25
15
12
Package
Lead-Free 28-Lead PLCC
Industrial Grade Specifications
Tpd (ns)
Tsu (ns)
Tco (ns)
Icc (mA)
10
10
7
130
15
12
10
20
13
11
25
15
12
Ordering #
Package
Lead-Free 28-Pin Plastic DIP
GAL20V8C-10LJNI
1
Lead-Free 24-Pin Plastic DIP
130
GAL20V8B-10LPNI
13 0
GAL20V8B-15LJNI
Lead-Free 28-Lead PLCC
130
GAL20V8B-15LPNI
Lead-Free 24-Pin Plastic DIP
65
GAL20V8B-20QJNI
Lead-Free 28-Lead PLCC
65
GAL20V8B-20QPNI
Lead-Free 24-Pin Plastic DIP
65
GAL20V8B-25QJNI
Lead-Free 28-Lead PLCC
65
GAL20V8B-25QPNI
Lead-Free 24-Pin Plastic DIP
130
GAL20V8B-25LJNI
Lead-Free 28-Lead PLCC
130
GAL20V8B-25LPNI
Lead-Free 24-Pin Plastic DIP
1. Discontinued per PCN #06-07. Contact Rochester Electronics for available inventory.
Part Number Description
XXXXXXXX _ XX
X XX X
GAL20V8C Device Name
GAL20V8B
Grade
Speed (ns)
L = Low Power
Power
Q = Quarter Power
Blank = Commercial
I = Industrial
Package P = Plastic DIP
PN = Lead-free Plastic DIP
J = PLCC
JN = Lead-free PLCC
3
Select devices have been discontinued.
See Ordering Information section for product status.
10
Ordering #
Specifications GAL20V8
Output Logic Macrocell (OLMC)
The following discussion pertains to configuring the output logic
macrocell. It should be noted that actual implementation is accomplished by development software/hardware and is completely transparent to the user.
The following is a list of the PAL architectures that the GAL20V8
can emulate. It also shows the OLMC mode under which the
devices emulate the PAL architecture.
GAL20V8
Global OLMC Mode
20R8
20R6
20R4
20RP8
20RP6
20RP4
Registered
Registered
Registered
Registered
Registered
Registered
20L8
20H8
20P8
Complex
Complex
Complex
14L8
16L6
18L4
20L2
14H8
16H6
18H4
20H2
14P8
16P6
18P4
20P2
Simple
Simple
Simple
Simple
Simple
Simple
Simple
Simple
Simple
Simple
Simple
Simple
Compiler Support for OLMC
Software compilers support the three different global OLMC modes
as different device types. These device types are listed in the table
below. Most compilers have the ability to automatically select the
device type, generally based on the register usage and output
enable (OE) usage. Register usage on the device forces the software to choose the registered mode. All combinatorial outputs with
OE controlled by the product term will force the software to choose
the complex mode. The software will choose the simple mode only
when all outputs are dedicated combinatorial without OE control.
The different device types listed in the table can be used to override
the automatic device selection by the software. For further details,
refer to the compiler software manuals.
configured as clock and output enable, respectively. These pins
cannot be configured as dedicated inputs in the registered mode.
In complex mode pin 1 and pin 13 become dedicated inputs and
use the feedback paths of pin 22 and pin 15 respectively. Because
of this feedback path usage, pin 22 and pin 15 do not have the
feedback option in this mode.
In simple mode all feedback paths of the output pins are routed
via the adjacent pins. In doing so, the two inner most pins ( pins
18 and 19) will not have the feedback option as these pins are
always configured as dedicated combinatorial output.
When using compiler software to configure the device, the user
must pay special attention to the following restrictions in each mode.
In registered mode pin 1 and pin 13 (DIP pinout) are permanently
ABEL
CUPL
LOG/iC
OrCAD-PLD
PLDesigner
TANGO-PLD
Select devices have been discontinued.
See Ordering Information section for product status.
There are three global OLMC configuration modes possible:
simple, complex, and registered. Details of each of these modes
is illustrated in the following pages. Two global bits, SYN and AC0,
control the mode configuration for all macrocells. The XOR bit of
each macrocell controls the polarity of the output in any of the three
modes, while the AC1 bit of each of the macrocells controls the input/output configuration. These two global and 16 individual architecture bits define all possible configurations in a GAL20V8 . The
information given on these architecture bits is only to give a better understanding of the device. Compiler software will transparently set these architecture bits from the pin definitions, so the user
should not need to directly manipulate these architecture bits.
PAL Architectures
Emulated by GAL20V8
Registered
Complex
Simple
Auto Mode Select
P20V8R
G20V8MS
GAL20V8_R
"Registered"1
P20V8R2
G20V8R
P20V8C
G20V8MA
GAL20V8_C7
"Complex"1
P20V8C2
G20V8C
P20V8AS
G20V8AS
GAL20V8_C8
"Simple"1
P20V8C2
G20V8AS3
P20V8
G20V8
GAL20V8
GAL20V8A
P20V8A
G20V8
1) Used with Configuration keyword.
2) Prior to Version 2.0 support.
3) Supported on Version 1.20 or later.
4
Specifications GAL20V8
Registered Mode
In the Registered mode, macrocells are configured as dedicated
registered outputs or as I/O functions.
Dedicated input or output functions can be implemented as subsets of the I/O function.
Architecture configurations available in this mode are similar to the
common 20R8 and 20RP4 devices with various permutations of
polarity, I/O and register placement.
Registered outputs have eight product terms per output. I/Os have
seven product terms per output.
CLK
Registered Configuration for Registered Mode
D
XOR
- SYN=0.
- AC0=1.
- XOR=0 defines Active Low Output.
- XOR=1 defines Active High Output.
- AC1=0 defines this output configuration.
- Pin 1 controls common CLK for the registered outputs.
- Pin 13 controls common OE for the registered outputs.
- Pin 1 & Pin 13 are permanently configured as CLK &
OE for registered output configuration.
Q
Q
OE
Combinatorial Configuration for Registered Mode
- SYN=0.
- AC0=1.
- XOR=0 defines Active Low Output.
- XOR=1 defines Active High Output.
- AC1=1 defines this output configuration.
- Pin 1 & Pin 13 are permanently configured as CLK &
OE for registered output configuration..
XOR
Note: The development software configures all of the architecture control bits and checks for proper pin usage automatically.
5
Select devices have been discontinued.
See Ordering Information section for product status.
The JEDEC fuse numbers, including the User Electronic Signature
(UES) fuses and the Product Term Disable (PTD) fuses, are shown
on the logic diagram on the following page.
All registered macrocells share common clock and output enable
control pins. Any macrocell can be configured as registered or I/
O. Up to eight registers or up to eight I/Os are possible in this mode.
Specifications GAL20V8
Registered Mode Logic Diagram
DIP (PLCC) Package Pinouts
1(2)
2640
0
4
8
12
16
20
24
28
32
36
PTD
2(3)
23(27)
0000
OLMC
3(4)
0320
OLMC
21(25)
XOR-2561
AC1-2633
0600
4(5)
0640
OLMC
20(24)
XOR-2562
AC1-2634
0920
5(6)
0960
OLMC
19(23)
XOR-2563
AC1-2635
1240
6(7)
1280
OLMC
18(21)
XOR-2564
AC1-2636
1560
7(9)
1600
OLMC
17(20)
XOR-2565
AC1-2637
1880
8(10)
1920
OLMC
16(19)
XOR-2566
AC1-2638
2200
9(11)
2240
OLMC
15(18)
XOR-2567
AC1-2639
2520
10(12)
14(17)
11(13)
OE
2703
SYN-2704
AC0-2705
6
13(16)
Select devices have been discontinued.
See Ordering Information section for product status.
22(26)
XOR-2560
AC1-2632
0280
Specifications GAL20V8
Complex Mode
signs requiring eight I/Os can be implemented in the Registered
mode.
Architecture configurations available in this mode are similar to the
common 20L8 and 20P8 devices with programmable polarity in
each macrocell.
All macrocells have seven product terms per output. One product
term is used for programmable output enable control. Pins 1 and
13 are always available as data inputs into the AND array.
Up to six I/Os are possible in this mode. Dedicated inputs or outputs
can be implemented as subsets of the I/O function. The two outer
most macrocells (pins 15 & 22) do not have input capability. De-
The JEDEC fuse numbers including the UES fuses and PTD fuses
are shown on the logic diagram on the following page.
Combinatorial I/O Configuration for Complex Mode
- SYN=1.
- AC0=1.
- XOR=0 defines Active Low Output.
- XOR=1 defines Active High Output.
- AC1=1.
- Pin 16 through Pin 21 are configured to this function.
XOR
Combinatorial Output Configuration for Complex Mode
- SYN=1.
- AC0=1.
- XOR=0 defines Active Low Output.
- XOR=1 defines Active High Output.
- AC1=1.
- Pin 15 and Pin 22 are configured to this function.
XOR
Note: The development software configures all of the architecture control bits and checks for proper pin usage automatically.
7
Select devices have been discontinued.
See Ordering Information section for product status.
In the Complex mode, macrocells are configured as output only or
I/O functions.
Specifications GAL20V8
Complex Mode Logic Diagram
DIP (PLCC) Package Pinouts
1(2)
2640
0
4
8
12
16
20
24
28
32
36
PTD
2(3)
23(27)
0000
XOR-2560
AC1-2632
3(4)
0320
OLMC
22(26)
21(25)
XOR-2561
AC1-2633
0600
4(5)
0640
OLMC
20(24)
XOR-2562
AC1-2634
0920
5(6)
0960
OLMC
19(23)
XOR-2563
AC1-2635
1240
6(7)
1280
OLMC
18(21)
XOR-2564
AC1-2636
1560
7(9)
1600
OLMC
17(20)
XOR-2565
AC1-2637
1880
8(10)
1920
OLMC
16(19)
XOR-2566
AC1-2638
2200
9(11)
2240
OLMC
15(18)
XOR-2567
AC1-2639
2520
10(12)
14(17)
11(13)
13(16)
2703
SYN-2704
AC0-2705
8
Select devices have been discontinued.
See Ordering Information section for product status.
OLMC
0280
Specifications GAL20V8
Simple Mode
Pins 1 and 13 are always available as data inputs into the AND
array. The “center” two macrocells (pins 18 and 19) cannot be used
in the input configuration.
In the Simple mode, pins are configured as dedicated inputs or as
dedicated, always active, combinatorial outputs.
Architecture configurations available in this mode are similar to the
common 14L8 and 16P6 devices with many permutations of generic output polarity or input choices.
The JEDEC fuse numbers including the UES fuses and PTD fuses
are shown on the logic diagram on the following page.
Combinatorial Output with Feedback Configuration
for Simple Mode
Vcc
- SYN=1.
- AC0=0.
- XOR=0 defines Active Low Output.
- XOR=1 defines Active High Output.
- AC1=0 defines this configuration.
- All OLMC except pins 18 & 19 can be configured to
this function.
XOR
Combinatorial Output Configuration for Simple Mode
Vcc
- SYN=1.
- AC0=0.
- XOR=0 defines Active Low Output.
- XOR=1 defines Active High Output.
- AC1=0 defines this configuration.
- Pins 18 & 19 are permanently configured to this
function.
XOR
Dedicated Input Configuration for Simple Mode
- SYN=1.
- AC0=0.
- XOR=0 defines Active Low Output.
- XOR=1 defines Active High Output.
- AC1=1 defines this configuration.
- All OLMC except pins 18 & 19 can be configured to
this function.
Note: The development software configures all of the architecture control bits and checks for proper pin usage automatically.
9
Select devices have been discontinued.
See Ordering Information section for product status.
All outputs in the simple mode have a maximum of eight product
terms that can control the logic. In addition, each output has programmable polarity.
Specifications GAL20V8
Simple Mode Logic Diagram
DIP (PLCC) Package Pinouts
1(2)
2640
0
4
8
12
16
20
24
28
32
36
PTD
23(27)
2(3)
OLMC
0000
22(26)
3(4)
0320
OLMC
XOR-2561
AC1-2633
0600
21(25)
4(5)
0640
OLMC
XOR-2562
AC1-2634
0920
20(24)
5(6)
0960
OLMC
XOR-2563
AC1-2635
1240
19(23)
6(7)
1280
OLMC
XOR-2564
AC1-2636
1560
18(21)
7(9)
1600
OLMC
XOR-2565
AC1-2637
1880
17(20)
8(10)
1920
OLMC
XOR-2566
AC1-2638
2200
16(19)
9(11)
2240
OLMC
XOR-2567
AC1-2639
2520
15(18)
10(12)
14(17)
11(13)
13(16)
2703
SYN-2704
AC0-2705
10
Select devices have been discontinued.
See Ordering Information section for product status.
XOR-2560
AC1-2632
0280
Specifications
SpecificationsGAL20V8C
GAL20V8
Absolute Maximum Ratings(1)
Recommended Operating Conditions
Supply voltage VCC ...................................... –0.5 to +7V
Input voltage applied .......................... –2.5 to VCC +1.0V
Off-state output voltage applied ......... –2.5 to VCC +1.0V
Storage Temperature ................................ –65 to 150°C
Ambient Temperature with
Power Applied ........................................ –55 to 125°C
Commercial Devices:
Ambient Temperature (TA) ............................... 0 to 75°C
Supply voltage (VCC)
with Respect to Ground ..................... +4.75 to +5.25V
DC Electrical Characteristics
Over Recommended Operating Conditions (Unless Otherwise Specified)
SYMBOL
VIL
VIH
IIL1
IIH
VOL
VOH
IOL
IOH
IOS2
MIN.
TYP.3
MAX.
UNITS
Input Low Voltage
Vss – 0.5
—
0.8
V
Input High Voltage
2.0
—
Vcc+1
V
PARAMETER
CONDITION
Input or I/O Low Leakage Current
0V ≤ VIN ≤ VIL (MAX.)
—
—
–100
μA
Input or I/O High Leakage Current
3.5V ≤ VIN ≤ VCC
—
—
10
μA
Output Low Voltage
IOL = MAX. Vin = VIL or VIH
—
—
0.5
V
Output High Voltage
IOH = MAX. Vin = VIL or VIH
2.4
—
—
V
Low Level Output Current
—
—
16
mA
High Level Output Current
—
—
–3.2
mA
TA= 25°C
–30
—
–150
mA
L -5/-7/-10
—
75
115
mA
L-10
—
75
130
mA
Output Short Circuit Current
COMMERCIAL
ICC
Operating Power
Supply Current
INDUSTRIAL
ICC
Operating Power
Supply Current
VCC = 5V
VOUT = 0.5V
VIL = 0.5V VIH = 3.0V
ftoggle = 15MHz Outputs Open
VIL = 0.5V VIH = 3.0V
ftoggle = 15MHz Outputs Open
1) The leakage current is due to the internal pull-up resistor on all pins. See Input Buffer section for more information.
2) One output at a time for a maximum duration of one second. Vout = 0.5V was selected to avoid test problems caused by tester
ground degradation. Characterized but not 100% tested.
3) Typical values are at Vcc = 5V and TA = 25 °C
11
Select devices have been discontinued.
See Ordering Information section for product status.
Industrial Devices:
Ambient Temperature (TA) ........................... –40 to 85°C
Supply voltage (VCC)
with Respect to Ground ..................... +4.50 to +5.50V
1.Stresses above those listed under the “Absolute Maximum
Ratings” may cause permanent damage to the device. These
are stress only ratings and functional operation of the device at
these or at any other conditions above those indicated in the
operational sections of this specification is not implied (while
programming, follow the programming specifications).
Specifications
Specifications
GAL20V8C
GAL20V8
AC Switching Characteristics
Over Recommended Operating Conditions
PARAMETER
tpd
fmax3
twh
twl
ten
tdis
A
COM
COM/IND
-5
-7
-10
DESCRIPTION
UNITS
MIN. MAX. MIN. MAX. MIN. MAX.
Input or I/O to
8 outputs switching
1
5
3
7.5
3
10
ns
Comb. Output
1 output switching
—
—
—
7
—
—
ns
A
Clock to Output Delay
1
4
2
5
2
7
ns
—
Clock to Feedback Delay
—
3
—
3
—
6
ns
—
Setup Time, Input or Feedback before Clock↑
3
—
5
—
7.5
—
ns
—
Hold Time, Input or Feedback after Clock↑
0
—
0
—
0
—
ns
A
Maximum Clock Frequency with
External Feedback, 1/(tsu + tco)
100
—
66.7
—
MHz
A
Maximum Clock Frequency with
Internal Feedback, 1/(tsu + tcf)
166
—
125
—
71.4
—
MHz
A
Maximum Clock Frequency with
No Feedback
166
—
125
—
83.3
—
MHz
—
Clock Pulse Duration, High
3
—
4
—
6
—
ns
—
Clock Pulse Duration, Low
3
—
4
—
6
—
ns
B
Input or I/O to Output Enabled
1
6
3
9
3
10
ns
B
OE to Output Enabled
1
6
2
6
2
10
ns
C
Input or I/O to Output Disabled
1
5
2
9
2
10
ns
C
OE to Output Disabled
1
5
1.5
6
1.5
10
ns
142.8 —
1) Refer to Switching Test Conditions section.
2) Calculated from fmax with internal feedback. Refer to fmax Descriptions section.
3) Refer to fmax Descriptions section. Characterized initially and after any design or process changes that may affect these
parameters.
Capacitance (TA = 25°C, f = 1.0 MHz)
SYMBOL
PARAMETER
MAXIMUM*
UNITS
TEST CONDITIONS
CI
Input Capacitance
8
pF
VCC = 5.0V, VI = 2.0V
CI/O
I/O Capacitance
8
pF
VCC = 5.0V, VI/O = 2.0V
*Characterized but not 100% tested
12
Select devices have been discontinued.
See Ordering Information section for product status.
tco
tcf2
tsu
th
TEST
COND1.
COM
Specifications
SpecificationsGAL20V8B
GAL20V8
Absolute Maximum Ratings(1)
Recommended Operating Conditions
Supply voltage VCC ...................................... –0.5 to +7V
Input voltage applied .......................... –2.5 to VCC +1.0V
Off-state output voltage applied ......... –2.5 to VCC +1.0V
Storage Temperature ................................ –65 to 150°C
Ambient Temperature with
Power Applied ........................................ –55 to 125°C
Commercial Devices:
Ambient Temperature (TA) ............................... 0 to 75°C
Supply voltage (VCC)
with Respect to Ground ..................... +4.75 to +5.25V
DC Electrical Characteristics
Over Recommended Operating Conditions (Unless Otherwise Specified)
SYMBOL
VIL
VIH
IIL1
IIH
VOL
VOH
IOL
IOH
IOS2
MIN.
TYP.3
MAX.
UNITS
Input Low Voltage
Vss – 0.5
—
0.8
V
Input High Voltage
2.0
—
Vcc+1
V
PARAMETER
CONDITION
Input or I/O Low Leakage Current
0V ≤ VIN ≤ VIL (MAX.)
—
—
–100
μA
Input or I/O High Leakage Current
3.5V ≤ VIN ≤ VCC
—
—
10
μA
Output Low Voltage
IOL = MAX. Vin = VIL or VIH
—
—
0.5
V
Output High Voltage
IOH = MAX. Vin = VIL or VIH
2.4
—
—
V
Low Level Output Current
—
—
24
mA
High Level Output Current
—
—
–3.2
mA
–30
—
–150
mA
Output Short Circuit Current
COMMERCIAL
ICC
Operating Power
Supply Current
INDUSTRIAL
ICC
Operating Power
Supply Current
VCC = 5V
VOUT = 0.5V
TA= 25°C
VIL = 0.5V VIH = 3.0V
L -7/-10
—
75
115
mA
ftoggle = 15MHz Outputs Open
L -15/-25
—
75
90
mA
Q -15/-25
—
45
55
mA
VIL = 0.5V VIH = 3.0V
L -10/-15/-25
—
75
130
mA
ftoggle = 15MHz Outputs Open
Q -20/-25
—
45
65
mA
1) The leakage current is due to the internal pull-up resistor on all pins. See Input Buffer section for more information.
2) One output at a time for a maximum duration of one second. Vout = 0.5V was selected to avoid test problems caused by tester
ground degradation. Characterized but not 100% tested.
3) Typical values are at Vcc = 5V and TA = 25 °C
13
Select devices have been discontinued.
See Ordering Information section for product status.
Industrial Devices:
Ambient Temperature (TA) ........................... –40 to 85°C
Supply voltage (VCC)
with Respect to Ground ..................... +4.50 to +5.50V
1.Stresses above those listed under the “Absolute Maximum
Ratings” may cause permanent damage to the device. These
are stress only ratings and functional operation of the device at
these or at any other conditions above those indicated in the
operational sections of this specification is not implied (while
programming, follow the programming specifications).
Specifications
SpecificationsGAL20V8B
GAL20V8
AC Switching Characteristics
Over Recommended Operating Conditions
PARAM.
TEST
COND1.
tpd
A
fmax3
twh
twl
ten
tdis
COM / IND
COM / IND
IND
COM / IND
-7
-10
-15
-20
-25
DESCRIPTION
UNITS
MIN.
MAX. MIN.
MAX. MIN.
MAX. MIN.
MAX. MIN.
MAX.
Input or I/O to
8 outputs switching
3
7.5
3
10
3
15
3
20
3
25
ns
Comb. Output
1 output switching
—
7
—
—
—
—
—
—
—
—
ns
A
Clock to Output Delay
2
5
2
7
2
10
2
11
2
12
ns
—
Clock to Feedback Delay
—
3
—
6
—
8
—
9
—
10
ns
—
Setup Time, Input or Fdbk before Clk↑
7
—
10
—
12
—
13
—
15
—
ns
—
Hold Time, Input or Fdbk after Clk↑
0
—
0
—
0
—
0
—
0
—
ns
A
Maximum Clock Frequency with
External Feedback, 1/(tsu + tco)
83.3
—
58.8
—
45.5
—
41.6
—
37
—
MHz
A
Maximum Clock Frequency with
Internal Feedback, 1/(tsu + tcf)
100
—
62.5
—
50
—
45.4
—
40
—
MHz
A
Maximum Clock Frequency with
No Feedback
100
—
62.5
—
62.5
—
50
—
41.7
—
MHz
—
Clock Pulse Duration, High
5
—
8
—
8
—
10
—
12
—
ns
—
Clock Pulse Duration, Low
5
—
8
—
8
—
10
—
12
—
ns
B
Input or I/O to Output Enabled
3
9
3
10
—
15
—
18
—
25
ns
B
OE to Output Enabled
2
6
2
10
—
15
—
18
—
20
ns
C
Input or I/O to Output Disabled
2
9
2
10
—
15
—
18
—
25
ns
C
OE to Output Disabled
1.5
6
1.5
10
—
15
—
18
—
20
ns
1) Refer to Switching Test Conditions section.
2) Calculated from fmax with internal feedback. Refer to fmax Descriptions section.
3) Refer to fmax Descriptions section.
Capacitance (TA = 25°C, f = 1.0 MHz)
SYMBOL
PARAMETER
MAXIMUM*
UNITS
TEST CONDITIONS
CI
Input Capacitance
8
pF
VCC = 5.0V, VI = 2.0V
CI/O
I/O Capacitance
8
pF
VCC = 5.0V, VI/O = 2.0V
*Characterized but not 100% tested.
14
Select devices have been discontinued.
See Ordering Information section for product status.
tco
tcf2
tsu
th
COM
Specifications GAL20V8
Switching Waveforms
INPUT or
I/O FEEDBACK
VALID INPUT
tsu
th
CLK
VALID INPUT
tco
REGISTERED
OUTPUT
tpd
COMBINATIONAL
OUTPUT
1/fmax
(external fdbk)
Combinatorial Output
Registered Output
OE
INPUT or
I/O FEEDBACK
tdis
tdis
ten
ten
REGISTERED
OUTPUT
COMBINATIONAL
OUTPUT
Input or I/O to Output Enable/Disable
twh
OE to Output Enable/Disable
twl
CLK
1/ fmax (internal fdbk)
CLK
tcf
1/ fmax
(w/o fb)
REGISTERED
FEEDBACK
Clock Width
fmax with Feedback
15
tsu
Select devices have been discontinued.
See Ordering Information section for product status.
INPUT or
I/O FEEDBACK
Specifications GAL20V8
fmax Descriptions
CL K
LOGIC
ARR AY
R EG I S T E R
LOGIC
ARRAY
tc o
REGISTER
fmax with External Feedback 1/(tsu+tco)
Note: fmax with external feedback is calculated from measured
tsu and tco.
t cf
t pd
CLK
fmax with Internal Feedback 1/(tsu+tcf)
LOGIC
ARRAY
REGISTER
Note: tcf is a calculated value, derived by subtracting tsu from
the period of fmax w/internal feedback (tcf = 1/fmax - tsu). The
value of tcf is used primarily when calculating the delay from
clocking a register to a combinatorial output (through registered
feedback), as shown above. For example, the timing from clock
to a combinatorial output is equal to tcf + tpd.
tsu + th
fmax with No Feedback
Note: fmax with no feedback may be less than 1/(twh + twl). This
is to allow for a clock duty cycle of other than 50%.
Switching Test Conditions
+5V
Input Pulse Levels
GND to 3.0V
Input Rise and
GAL20V8B
2 – 3ns 10% – 90%
Fall Times
GAL20V8C
1.5ns 10% – 90%
Input Timing Reference Levels
1.5V
Output Timing Reference Levels
1.5V
Output Load
R1
FROM OUTPUT (O/Q)
UNDER TEST
See Figure
TEST POINT
C L*
R2
3-state levels are measured 0.5V from steady-state active
level.
*C L INCLUDES TEST FIXTURE AND PROBE CAPACITANCE
GAL20V8B Output Load Conditions (see figure)
Test Condition
A
B
C
Active High
Active Low
Active High
Active Low
GAL20V8C Output Load Conditions (see figure)
R1
R2
CL
200Ω
∞
200Ω
∞
200Ω
390Ω
390Ω
390Ω
390Ω
390Ω
50pF
50pF
50pF
5pF
5pF
Test Condition
A
B
C
16
Active High
Active Low
Active High
Active Low
R1
R2
CL
200Ω
∞
200Ω
∞
200Ω
200Ω
200Ω
200Ω
200Ω
200Ω
50pF
50pF
50pF
5pF
5pF
Select devices have been discontinued.
See Ordering Information section for product status.
ts u
CLK
Specifications GAL20V8
Electronic Signature
An electronic signature is provided in every GAL20V8 device. It
contains 64 bits of reprogrammable memory that can contain user
defined data. Some uses include user ID codes, revision numbers,
or inventory control. The signature data is always available to the
user independent of the state of the security cell.
NOTE: The electronic signature is included in checksum calculations. Changing the electronic signature will alter the checksum.
A security cell is provided in the GAL20V8 devices to prevent unauthorized copying of the array patterns. Once programmed, this
cell prevents further read access to the functional bits in the device.
This cell can only be erased by re-programming the device, so the
original configuration can never be examined once this cell is programmed. The Electronic Signature is always available to the user,
regardless of the state of this control cell.
Latch-Up Protection
GAL20V8 devices are designed with an on-board charge pump
to negatively bias the substrate. The negative bias minimizes the
potential of latch-up caused by negative input undershoots. Additionally, outputs are designed with n-channel pull-ups instead of
the traditional p-channel pull-ups in order to eliminate latch-up due
to output overshoots.
Device Programming
When testing state machine designs, all possible states and state
transitions must be verified in the design, not just those required
in the normal machine operations. This is because, in system
operation, certain events occur that may throw the logic into an
illegal state (power-up, line voltage glitches, brown-outs, etc.). To
test a design for proper treatment of these conditions, a way must
be provided to break the feedback paths, and force any desired (i.e.,
illegal) state into the registers. Then the machine can be sequenced
and the outputs tested for correct next state conditions.
Select devices have been discontinued.
See Ordering Information section for product status.
Security Cell
Output Register Preload
GAL20V8 devices include circuitry that allows each registered
output to be synchronously set either high or low. Thus, any present
state condition can be forced for test sequencing. If necessary,
approved GAL programmers capable of executing text vectors
perform output register preload automatically.
Input Buffers
GAL20V8 devices are designed with TTL level compatible input
buffers. These buffers have a characteristically high impedance,
and present a much lighter load to the driving logic than bipolar TTL
devices.
The GAL20V8 input and I/O pins have built-in active pull-ups. As
a result, unused inputs and I/O's will float to a TTL "high" (logical
"1"). Lattice Semiconductor recommends that all unused inputs
and tri-stated I/O pins be connected to another active input, VCC,
or Ground. Doing this will tend to improve noise immunity and reduce ICC for the device.
GAL devices are programmed using a Lattice Semiconductorapproved Logic Programmer, available from a number of manufacturers. Complete programming of the device takes only a few
seconds. Erasing of the device is transparent to the user, and is
done automatically as part of the programming cycle.
I n p u t C u r r e n t (u A )
Typical Input Pull-up Characteristic
0
-20
-40
-60
0
1.0
2.0
3.0
In p u t V o lt ag e ( V o lt s)
17
4.0
5.0
Specifications GAL20V8
Power-Up Reset
Vcc
Vcc (min.)
t su
t wl
CLK
Internal Register
Reset to Logic "0"
FEEDBACK/EXTERNAL
OUTPUT REGISTER
Device Pin
Reset to Logic "1"
Circuitry within the GAL20V8 provides a reset signal to all registers
during power-up. All internal registers will have their Q outputs set
low after a specified time (tpr, 1μs MAX). As a result, the state on
the registered output pins (if they are enabled) will always be high
on power-up, regardless of the programmed polarity of the output
pins. This feature can greatly simplify state machine design by providing a known state on power-up. Because of the asynchronous
nature of system power-up, some conditions must be met to provide
a valid power-up reset of the device. First, the VCC rise must be
monotonic. Second, the clock input must be at static TTL level as
shown in the diagram during power up. The registers will reset
within a maximum of tpr time. As in normal system operation, avoid
clocking the device until all input and feedback path setup times
have been met. The clock must also meet the minimum pulse width
requirements.
Input/Output Equivalent Schematics
PIN
PIN
Feedback
Vcc
Active Pull-up
Circuit
Active Pull-up
Circuit
Vcc
ESD
Protection
Circuit
Vref
Select devices have been discontinued.
See Ordering Information section for product status.
t pr
INTERNAL REGISTER
Q - OUTPUT
Tri-State
Control
Vcc
Vcc
Vref
Data
Output
PIN
ESD
Protection
Circuit
Typ. Vref = 3.2V
Typ. Vref = 3.2V
Typical Input
PIN
Feedback
(To Input Buffer)
Typical Output
18
Specifications GAL20V8
GAL20V8C: Typical AC and DC Characteristic Diagrams
Normalized Tpd vs Vcc
1.2
1.2
0.9
0.8
1.1
FALL
1
0.9
4.75
5.00
5.25
5.50
4.50
1
0.9
4.75
5.00
5.25
4.50
5.50
4.75
5.00
5.25
5.50
Supply Voltage (V)
Supply Voltage (V)
Supply Voltage (V)
Normalized Tpd vs Temp
Normalized Tco vs Temp
Normalized Tsu vs Temp
1.3
0.8
0.8
Temperature (deg. C)
Delta Tco vs # of Outputs
Switching
0
Delta Tco (ns)
0
-0.25
-0.5
RISE
-0.75
FALL
-0.25
-0.5
RISE
-0.75
-1
FALL
-1
1
2
3
4
5
6
7
8
1
Number of Outputs Switching
2
3
4
5
6
7
8
Number of Outputs Switching
Delta Tpd vs Output Loading
Delta Tco vs Output Loading
8
8
6
Delta Tco (ns)
RISE
FALL
4
2
0
RISE
6
FALL
4
2
0
-2
-2
0
50
100
150
200
250
0
300
50
100
150
200
250
Output Loading (pF)
Output Loading (pF)
19
100
-55
125
100
75
50
0
Delta Tpd vs # of Outputs
Switching
Delta Tpd (ns)
1
0.9
Temperature (deg. C)
Temperature (deg. C)
Delta Tpd (ns)
PT L->H
1.1
0.7
25
-25
-55
125
100
75
50
0
25
0.7
-25
0.7
0.9
PT H->L
1.2
75
0.8
1
1.3
50
0.9
1.1
FALL
25
1
RISE
0
1.1
PT L->H
1.4
1.2
-25
PT H->L
Normalized Tsu
1.2
Normalized Tco
1.3
-55
PT L->H
0.8
0.8
4.50
PT H->L
1.1
300
125
PT L->H
1
RISE
Normalized Tsu
1.1
Normalized Tco
PT H->L
Select devices have been discontinued.
See Ordering Information section for product status.
Normalized Tpd
1.2
Normalized Tpd
Normalized Tsu vs Vcc
Normalized Tco vs Vcc
Specifications GAL20V8
GAL20V8C: Typical AC and DC Characteristic Diagrams
Voh vs Ioh
Vol vs Iol
4
0.5
Voh (V)
1
4
3
2
3.5
1
0
0
0.00
20.00
40.00
60.00
3.25
0.00
80.00
10.00
20.00
30.00
40.00
Normalized Icc vs Vcc
1.00
0.90
0.80
5.25
1.1
1
0.9
5.50
Supply Voltage (V)
-25
0
25
50
75
100
125
Temperature (deg. C)
Delta Icc vs Vin (1 input)
0
5
Iik (mA)
10
6
4
15
20
25
30
35
2
40
0
45
0.00 0.50 1.00 1.50 2.00 2.50 3.00 3.50 4.00
Vin (V)
1.20
1.10
1.00
0.90
-2.00
-1.50
-1.00
Vik (V)
20
-0.50
0
25
50
75
Frequency (MHz)
Input Clamp (Vik)
8
1.30
0.80
-55
10
4.00
1.40
1.2
0.8
5.00
3.00
1.50
Normalized Icc
Normalized Icc
1.10
2.00
Normalized Icc vs Freq.
1.3
4.75
1.00
Ioh(mA)
Normalized Icc vs Temp
1.20
Delta Icc (mA)
0.00
50.00
Ioh(mA)
Iol (mA)
4.50
3.75
0.00
100
Select devices have been discontinued.
See Ordering Information section for product status.
Voh (V)
1.5
Vol (V)
4.25
5
2
Normalized Icc
Voh vs Ioh
Specifications GAL20V8
GAL20V8B-7/-10: Typical AC and DC Characteristic Diagrams
Normalized Tpd vs Vcc
1.2
1.2
1
0.9
0.8
1.1
FALL
1
0.9
4.75
5.00
5.25
5.50
4.50
1
0.9
4.75
5.00
5.25
4.50
5.50
4.75
5.00
5.25
5.50
Supply Voltage (V)
Supply Voltage (V)
Supply Voltage (V)
Normalized Tpd vs Temp
Normalized Tco vs Temp
Normalized Tsu vs Temp
1.3
0.9
0.8
0.7
Delta Tco (ns)
0
-0.5
-1
RISE
-1.5
FALL
-2
-0.5
-1
RISE
-1.5
FALL
-2
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
Number of Outputs Switching
Number of Outputs Switching
Delta Tpd vs Output Loading
Delta Tco vs Output Loading
10
8
RISE
6
FALL
Delta Tco (ns)
10
4
2
8
RISE
6
FALL
4
2
0
0
-2
-2
0
50
100
150
200
250
0
300
50
100
150
200
250
Output Loading (pF)
Output Loading (pF)
21
100
Temperature (deg. C)
Delta Tco vs # of Outputs
Switching
0
75
-55
125
100
75
50
25
Delta Tpd vs # of Outputs
Switching
Delta Tpd (ns)
0.8
Temperature (deg. C)
Temperature (deg. C)
Delta Tpd (ns)
1
0.9
0.7
0
-25
-55
125
100
75
50
0
25
-25
0.7
PT L->H
1.1
50
0.8
1
PT H->L
1.2
0
1
0.9
FALL
1.1
1.3
25
PT L->H
1.1
1.4
RISE
1.2
-25
1.2
Normalized Tco
PT H->L
Normalized Tsu
1.3
-55
PT L->H
0.8
0.8
4.50
PT H->L
1.1
300
125
PT L->H
RISE
Normalized Tsu
1.1
Normalized Tco
PT H->L
Select devices have been discontinued.
See Ordering Information section for product status.
Normalized Tpd
1.2
Normalized Tpd
Normalized Tsu vs Vcc
Normalized Tco vs Vcc
Specifications GAL20V8
GAL20V8B-7/-10: Typical AC and DC Characteristic Diagrams
Vol vs Iol
Voh vs Ioh
1
4
0.25
Voh (V)
Voh (V)
0.5
4.25
3
2
3.75
1
0
0
0.00
20.00
40.00
60.00
80.00
100.00
3.5
0.00
10.00
20.00
Iol (mA)
30.00
40.00
50.00
1.00
0.90
0.80
1.1
1
0.9
0.8
5.00
5.25
5.50
Supply Voltage (V)
-25
0
25
50
75
100
125
Temperature (deg. C)
Delta Icc vs Vin (1 input)
Input Clamp (Vik)
0
20
6
30
40
Iik (mA)
8
50
60
70
2
80
0
90
100
0.00 0.50 1.00 1.50 2.00 2.50 3.00 3.50 4.00
Vin (V)
1.20
1.10
1.00
0.90
-2.00
-1.50
-1.00
Vik (V)
22
-0.50
0
25
50
75
Frequency (MHz)
10
4
4.00
0.80
-55
10
3.00
1.30
Normalized Icc
Normalized Icc
1.10
2.00
Normalized Icc vs Freq.
1.2
4.75
1.00
Ioh(mA)
Normalized Icc vs Temp
1.20
Delta Icc (mA)
0.00
60.00
Ioh(mA)
Normalized Icc vs Vcc
4.50
4
0.00
100
Select devices have been discontinued.
See Ordering Information section for product status.
Vol (V)
4.5
5
0.75
Normalized Icc
Voh vs Ioh
Specifications GAL20V8
GAL20V8B-15/-25: Typical AC and DC Characteristic Diagrams
Normalized Tpd vs Vcc
Normalized Tco vs Vcc
1.2
PT L->H
1
0.9
1.2
RISE
1.1
Normalized Tsu
1.1
Normalized Tco
PT H->L
0.8
FALL
1
0.9
0.8
4.50
4.75
5.00
5.25
5.50
PT L->H
1
0.9
4.75
5.00
5.25
5.50
4.50
4.75
5.00
5.25
5.50
Supply Voltage (V)
Supply Voltage (V)
Supply Voltage (V)
Normalized Tpd vs Temp
Normalized Tco vs Temp
Normalized Tsu vs Temp
1.4
1.3
PT L->H
1.1
1
0.9
0.8
0.7
RISE
1.2
Normalized Tsu
1.2
Normalized Tco
PT H->L
FALL
1.1
1
0.9
0.8
0.7
0
25
50
75
100
125
-25
PT H->L
1.2
PT L->H
1.1
1
0.9
0.8
0
25
50
75
100
-55
125
-25
Delta Tpd vs # of Outputs
Switching
0
Delta Tco vs # of Outputs
Switching
0
0
-0.5
-1
RISE
-1.5
FALL
-2
-0.5
-1
RISE
-1.5
FALL
-2
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
Number of Outputs Switching
Number of Outputs Switching
Delta Tpd vs Output Loading
Delta Tco vs Output Loading
10
10
6
Delta Tco (ns)
RISE
8
FALL
4
2
0
8
RISE
6
FALL
4
2
0
-2
-2
-4
-4
0
50
100
150
200
250
0
300
50
100
150
200
250
Output Loading (pF)
Output Loading (pF)
23
25
50
75
100
Temperature (deg. C)
Temperature (deg. C)
Temperature (deg. C)
Delta Tpd (ns)
1.3
0.7
-55
Delta Tco (ns)
-25
Delta Tpd (ns)
-55
PT H->L
1.1
0.8
4.50
1.3
Normalized Tpd
Normalized Tsu vs Vcc
300
125
Select devices have been discontinued.
See Ordering Information section for product status.
Normalized Tpd
1.2
Specifications GAL20V8
GAL20V8B-15/-25: Typical AC and DC Characteristic Diagrams
Voh vs Ioh
Vol vs Iol
4
1
3
2
3.5
1
0
0
0.00
20.00
40.00
60.00
80.00
3.25
0.00
100.00
10.00 20.00
Normalized Icc vs Vcc
0.00
50.00 60.00
1.00
0.90
0.80
1.1
1
0.9
0.8
5.00
5.25
5.50
Supply Voltage (V)
8
30
40
Iik (mA)
0
10
20
4
0
25
50
75
100
125
50
60
70
80
2
90
0
100
0.00 0.50 1.00 1.50 2.00 2.50 3.00 3.50 4.00
Vin (V)
1.30
1.20
1.10
1.00
0.90
-2.00
-1.50
-1.00
Vik (V)
24
-0.50
0
25
50
75
Frequency (MHz)
Input Clamp (Vik)
Delta Icc vs Vin (1 input)
6
-25
Temperature (deg. C)
10
4.00
0.80
-55
12
3.00
1.40
Normalized Icc
Normalized Icc
1.10
2.00
Normalized Icc vs Freq.
1.2
4.75
1.00
Ioh(mA)
Normalized Icc vs Temp
1.20
Normalized Icc
30.00 40.00
Ioh(mA)
Iol (mA)
4.50
3.75
0.00
100
Select devices have been discontinued.
See Ordering Information section for product status.
0.5
4
Voh (V)
Voh (V)
1.5
Vol (V)
4.25
5
2
Delta Icc (mA)
Voh vs Ioh
Specifications GAL20V8
Revision History
Date
Version
Change Summary
-
20v8_06
Previous Lattice release.
August 2006
20v8_07
Updated for lead-free package options.
Select devices have been discontinued.
See Ordering Information section for product status.
25