ATF2500C_08 ATMEL [ATMEL Corporation], ATF2500C_08 Datasheet - Page 4

• Manufacturer Part Number: ATF2500C_08
• Description: ATF2500C CPLD Family Datasheet
• Manufacturer: ATMEL [ATMEL Corporation]

4. Power-up Reset
4
ATF2500C
The registers in the ATF2500Cs are designed to reset during power-up. At a point delayed
slightly from V
depend on the polarity of the output buffer.
This feature is critical for state as nature of reset and the uncertainty of how V
the system, the following conditions are required:
Figure 4-1.
Table 4-1.
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 pin, and any signals from which clock terms are derived, must remain stable
PR
RST
clock pin or terms high, and
during t
CC
PR
CC
rise must be monotonic,
Power-up Reset Waveform
Power-up Reset
.
Description
Power-up Reset Time
Power-up Reset Voltage
crossing V
RST
, all registers will be reset to the low state. The output state will
Typ
600
3.8
1000
Max
4.5
CC
actually rises in
0777K–PLD–1/24/08
Units
ns
V