ATF16V8BQL-15PX Atmel, ATF16V8BQL-15PX Datasheet - Page 7
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ATF16V8BQL-15PX
Manufacturer Part Number
ATF16V8BQL-15PX
Description
Manufacturer
Atmel
Datasheet
1.ATF16V8BQL-15PX.pdf
(26 pages)
Specifications of ATF16V8BQL-15PX
Family Name
ATF16V8BQL
Process Technology
CMOS
# Macrocells
8
# I/os (max)
8
Frequency (max)
62MHz
Propagation Delay Time
15ns
Operating Supply Voltage (typ)
5V
Operating Supply Voltage (min)
4.75V
Operating Supply Voltage (max)
5.25V
Supply Current
20mA
Operating Temp Range
0C to 70C
Operating Temperature Classification
Commercial
Mounting
Through Hole
Pin Count
20
Package Type
PDIP
Lead Free Status / Rohs Status
Compliant
4.6
4.7
5. Security Fuse Usage
0364J–PLD–7/05
Power-up Reset
Preload of Registered Outputs
The registers in the ATF16V8Bs are designed to reset during power-up. At a point delayed
slightly from V
tered output state will always be high on power-up.
This feature is critical for state machine initialization. However, due to the asynchronous nature
of reset and the uncertainty of how V
required:
Figure 4-1.
Table 4-2.
The ATF16V8B’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 vec-
tors is compiled. Once downloaded, the JEDEC file preload sequence will be done automatically
by most of the approved programmers after the programming.
A single fuse is provided to prevent unauthorized copying of the ATF16V8B 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.
Parameter
t
V
1. The V
2. After reset occurs, all input and feedback setup times must be met before driving the
3. The clock must remain stable during t
PR
RST
clock pin high, and
CC
CC
rise must be monotonic,
Power-up Reset Waveforms
Power-up Reset Parameters
crossing V
Description
Power-up
Reset Time
Power-up
Reset Voltage
RST
, all registers will be reset to the low state. As a result, the regis-
CC
actually rises in the system, the following conditions are
PR
.
Typ
600
3.8
ATF16V8B/BQ/BQL
1,000
Max
4.5
Units
ns
V
7