ATF16V8CZ-12JU Atmel, ATF16V8CZ-12JU Datasheet - Page 6

• Manufacturer Part Number: ATF16V8CZ-12JU
• Manufacturer: Atmel

Specifications of ATF16V8CZ-12JU

• Family Name: ATF16V8CZ
• Process Technology: EECMOS
• # Macrocells: 8
• # I/os (max): 8
• Frequency (max): 83MHz
• Propagation Delay Time: 12ns
• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (min): 4.5V
• Operating Supply Voltage (max): 5.5V
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 20
• Supply Current: 105mA
• Lead Free Status / RoHS Status: Compliant

Registered Output Preload
The ATF16V8CZ’s registers are provided with circuitry to
allow loading of each register with either a high or a low.
This feature will simplify testing since any state can be
forced into the registers to control test sequencing. A
JEDEC file with preload is generated when a source file
with vectors is compiled. Once downloaded, the JEDEC file
preload sequence will be done automatically by approved
programmers.
Security Fuse Usage
A single fuse is provided to prevent unauthorized copying
of the ATF16V8CZ fuse patterns. Once programmed, fuse
verify and preload are inhibited. However, the 64-bit User
Signature remains accessible.
The security fuse should be programmed last, as its effect
is immediate.
Input and I/O Pin Keeper Circuits
The ATF16V8CZ contains internal input and I/O pin keeper
circuits. These circuits allow each ATF16V8CZ pin to hold
its previous value even when it is not being driven by an
external source or by the device's output buffer. This helps
insure that all logic array inputs are at known, valid logic
levels. This reduces system power by preventing pins from
floating to indeterminate levels. By using pin keeper circuits
rather than pull-up resistors, there is no DC current
required to hold the pins in either logic state (high or low).
These pin keeper circuits are implemented as weak feed-
back inverters, as shown in the Input Diagram below.
These keeper circuits can easily be overdriven by standard
TTL- or CMOS-compatible drivers. The typical overdrive
current required is 40 µA.
Compiler Mode Selection
Note:
6
ABEL, Atmel-ABEL
CUPL
LOG/iC
OrCAD-PLD
PLDesigner
Tango-PLD
1. Only applicable for version 3.4 or lower.
ATF16V8CZ
GAL16V8_R
“Registered”
Registered
G16V8MS
P16C8R
G16V8R
P16V8R
(1)
GAL16V8_C7
G16V8MA
“Complex”
Complex
G16V8C
P16V8C
P16V8C
Input Diagram
I/O Diagram
(1)
GAL16V8_C8
G16V8AS
G16V8AS
P16V8AS
“Simple”
P16V8C
Simple
(1)
Auto Select
GAL16V8A
GAL16V8
G16V8A
P16V8A
G16V8
P16V8