Features
4
5
6
7
8
18
17
16
15
14
PD/I3
I4
I5
I6
I7
I/O
I/O
I/O
I/O
I/O
321
20
19
910111213
I8
GND
I9/OE
I/O
I/O
I2I1I/CLK
VCC
I/O
• 3.0V to 5.5V Operation
• Industry Standard Architecture
– Emulates Many 20-pin PALs
– Low-cost Easy-to-use Software Tools
®
• High-speed
– 10 ns Maximum Pin-to-pin Delay
• Ultra-low Power
–5 µA (Max) Pin-controlled Power-down Mode Option
– Typical 100 nA Standby
• CMOS and TTL Compatible Inputs and Outputs
– I/O Pin Keeper Circuits
• Advanced Flash Technology
– Reprogrammable
– 100% Tested
• High-reliability CMOS Process
– 20 Year Data Retention
– 100 Erase/Write Cycles
– 2,000V ESD Protection
– 200 mA Latchup Immunity
• Commercial and Industrial Temperature Ranges
• Dual-in-line and Surface Mount Packages in Standard Pinouts
• Inputs are 5V Tolerant
Description
Highperformance
EE PLD
ATF16LV8C
The ATF16LV8C is a high-performanc e EECMOS Program mable Logic Devic e that
utilizes Atmel’s proven electrically-erasable Flash memory technology. Speeds down
to 10 ns and a 5 µA pin-controlled power-down mode option are offered. All speed
Pin Configurations
All Pinouts Top View
Pin Name Function
CLK Clock
I Logic Inputs
I/O Bidirectional Buffers
OE Output Enable
VCC (+3V to 5.5V) Supply
Programmable Powerdown Opti on
PD
I/CLK
I1
I2
PD/I3
I4
I5
I6
I7
I8
GND
PLCC
I/CLK
PD/I3
GND
1
2
3
4
5
6
7
8
9
10
I1
I2
I4
I5
I6
I7
I8
TSSOP
DIP/SOIC
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
20
VCC
19
I/O
18
I/O
17
I/O
16
I/O
15
I/O
14
I/O
13
I/O
12
I/O
11
I9/OE
(continued)
VCC
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I9/OE
Rev. 0403G–08/99
1
ranges are specified over the full 3.0V to 5.25V range for
industrial and commercial temperature ranges.
The ATF16LV8C incorpora tes a superse t of the gener ic
architectures, wh ich allows direct repl acemen t of the 16R8
family and most 20-pin combinatorial PLDs. Ei ght outputs
are each allocated eight produc t terms. Three different
modes of operation, configured automatically with software, allow highly complex logic functions to be realized.
Block Diagram
Note: 1. Includes optional PD control pin.
Absolute Maximum Ratings*
Temperature Under Bias.................................. -40°C to +85°C
Storage Temperature..................................... -65°C to +150°C
Voltage on Any Pin with
Respect to Ground .........................................-2.0V to +7.0V
Voltage on Input Pins
with Respect to Ground
During Programming.....................................-2.0V to +14.0V
Programming Voltage with
Respect to Ground .......................................-2.0V to +14.0V
(1)
(1)
(1)
The ATF16LV8C can significantly reduce total system
power, thereby enhancing system reliability and reducing
power supply costs. When pin 4 is configured as the
power-down control pin, supply current drops to less than
5µA whenever the pin is high. If the power-down feature
isn’t required for a particular application, pin 4 may be used
as a logic input. Also, the pin keeper circuits eliminate the
need for internal pu ll -up r esis to rs a lon g wi th t hei r atte nda nt
power consumption.
*NOTICE: Stresses beyond those listed under “Absolute
Maximum Ratings” may cause permanent damage to the device . This is a st ress rating only and
functional operatio n of the dev ice at th ese or an y
other conditions beyond those indicated in the
operational sections of this specification is not
implied. Exposure to absolute maximum rating
conditions for exten ded periods may af fect device
reliability.
Note: 1. Minimum voltage is -0.6V DC, which may under-
shoot to -2.0V for pulses of less than 20 ns.
Maximum output pin voltage is Vcc + 0.75V DC,
which may overshoot to 7.0V for pulses of less
than 20 ns.
DC and AC Operating Conditions
Commercial
Operating Temperature (Ambient) 0°C - 70°C
V
Power Supply 3.0V to 5.5V
CC
2
ATF16LV8C
DC Characteristics
Symbol Parameter Condition
ATF16LV8C
(2)
Min Typ Max Units
I
I
I
I
I
V
V
V
V
I
I
IL
IH
CC1
PD
OS
IL
IH
OL
OH
OL
OH
(1)
(1)
Input or I/O Low Leakage Current 0 ≤ VIN ≤ VIL(Max) -10 µA
Input or I/O High Leakage Current 1.8 ≤ VIN ≤ V
Power Supply Current
Power Supply Current, Power-down Mode
Output Short Circuit Current
Input Low Voltage MIN < VCC < Max -0.5 0.8 V
Input High Voltage 2.0 VCC + 1 V
Output Low Voltage
Output High Voltage
Output Low Current VCC = Min 8 mA
Output High Current VCC = Min -4 mA
Note: 1. All ICC parameters measured with outputs open.
2. For DC characteristics, the test condition of V
CC
CC
15 MHz, V
= 0, V
V
IN
CC
CC,
= Max,
Outputs Open
= Max,
V
CC
= 0, V
V
IN
V
OUT
V
CC
V
CC
I
OL
V
CC
I
OH
CC
= 0.5V;
= 3V; TA = 25°C
= Min; All Outputs
= 8 mA
= Min
= -4 mA
= Max corresponds to 3.6V.
10 µA
Com.
Ind.
55
60
mA
0.1 5 µA
-150 mA
0.5 V
2.4 V
AC Waveforms
(1)
Note: 1. Timing measurement reference is 1.5V. Input AC driving levels are 0.0V and 3.0V, unless otherwise specified.
3
AC Characteristics
Symbol Parameter
-10 -15
UnitsMinMaxMinMax
t
PD
t
CF
t
CO
t
S
t
H
t
P
t
W
Input or Feedback to Non-Registered Output 1 10 1 15 ns
Clock to Feedback 5 8 ns
Clock to Output 2 7 2 10 ns
Input or Feedback Setup Time 7 12 ns
Input Hold Time 0 0 ns
Clock Period 12 16 ns
Clock Width 6 8 ns
External Feedback 1/(tS+ tCO) 71.4 45.5 MHz
F
t
t
t
t
MAX
EA
ER
PZX
PXZ
Internal Feedback 1/(tS + tCF)83.350MHz
No Feedback 1/(t
) 83.3 62.5 MHz
P
Input to Output Enable — Product Term 3 10 3 1 5 ns
Input to Output Disable — Product Term 2 10 2 15 ns
OE pin to Output Enable 2 8 2 15 ns
OE pin to Output Disable 1.5 8 1.5 15 ns
Power-down AC Characteristics
(1)(2)(3)
-10 -15
Symbol Parameter
t
IVDH
t
GVDH
t
CVDH
t
DHIX
t
DHGX
t
DHCX
t
DLIV
t
DLGV
t
DLCV
t
DLOV
Valid Input Before PD High 10 15 ns
Valid OE Before PD High 0 0 ns
Valid Clock Before PD High 0 0 ns
Input Don't Care After PD High 10 15 ns
OE Don't Care After PD High 10 15 ns
Clock Don't Care After PD High 10 15 ns
PD Low to Valid Input 10 15 ns
PD Low to Valid OE 25 30 ns
PD Low to Valid Clock 25 30 ns
PD Low to Valid Output 30 35 ns
Notes: 1. Output data is latched and held.
2. HI-Z ou tputs remain HI-Z.
3. Clock and input transitions are ignored.
UnitsMin Max Min Max
4
ATF16LV8C