A3P060-1VQ144T ACTEL [Actel Corporation], A3P060-1VQ144T Datasheet - Page 15

• Manufacturer Part Number: A3P060-1VQ144T
• Description: Automotive ProASIC3 Flash Family FPGAs
• Manufacturer: ACTEL [Actel Corporation]

Table 2-3 •
V
2.7 V or less
3 V
3.3 V
3.6 V
Notes:
1. The duration is allowed at one out of six clock cycles (estimated SSO density over cycles). If the
2. This table refers only to overshoot/undershoot limits for simultaneously switching I/Os and does not
CCI
overshoot/undershoot occurs at one out of two cycles, the maximum overshoot/undershoot has to be
reduced by 0.15 V.
provide PCI overshoot/undershoot limits.
and VMV
I/O Power-Up and Supply Voltage Thresholds for Power-On Reset
(Commercial and Industrial)
Sophisticated power-up management circuitry is designed into every ProASIC
circuits ensure easy transition from the powered-off state to the powered-up state of the device.
The many different supplies can power up in any sequence with minimized current spikes or surges.
In addition, the I/O will be in a known state through the power-up sequence. The basic principle is
shown in
There are five regions to consider during power-up.
ProASIC3 I/Os are activated only if ALL of the following three conditions are met:
V
Ramping up: 0.6 V < trip_point_up < 1.2 V
Ramping down: 0.5 V < trip_point_down < 1.1 V
V
Ramping up: 0.6 V < trip_point_up < 1.1 V
Ramping down: 0.5 V < trip_point_down < 1 V
V
specifically built-in hysteresis prevents undesirable power-up oscillations and current surges. Note
the following:
Internal Power-Up Activation Sequence
Overshoot and Undershoot Limits (as measured on quiet I/Os)
CC
CCI
CC
1. V
2. V
3. Chip is in the operating mode.
•
•
1. Core
2. Input buffers
3. Output buffers, after 200 ns delay from input buffer activation
Average V
Trip Point:
and V
Trip Point:
Duration as a Percentage of Clock Cycle
During programming, I/Os become tristated and weakly pulled up to V
JTAG supply, PLL power supplies, and charge pump V
behavior.
CC
CCI
Figure 2-2 on page
CCI
and V
> V
CCI
ramp-up trip points are about 100 mV higher than ramp-down trip points. This
CC
CCI
–GND Overshoot or Undershoot
– 0.75 V (typical)
are above the minimum specified trip points
10%
10%
10%
10%
5%
5%
5%
5%
2-4.
v1.0
Automotive ProASIC3 DC and Switching Characteristics
Maximum Overshoot/
Undershoot (115°C)
0.81 V
0.90 V
0.80 V
0.90 V
0.79 V
0.88 V
N/A
N/A
PUMP
(Figure 2-2 on page
supply have no influence on I/O
Maximum Overshoot/
Undershoot (135°C)
CCI
.
®
3 device. These
0.72 V
0.82 V
0.72 V
0.81 V
0.69 V
0.79 V
N/A
N/A
2-4).
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