Specifications

Figure 10-3: Power-Up Sequence Recommendation for Cyclone V Devices
Power up V
CCBAT
at any time. Ramp up the power rails in each group to a minimum of 80% of their full rail
before the next group starts. Power up V
CCE_GXB
and V
CCL_GXB
together with V
CC
.
1.1V
V
CC
V
CCE_GXB
V
CCL_GXB
V
CC_HPS
2.5V
V
CCPGM
V
CCIO
V
CCPD
V
CCA_FPLL
V
CCH_GXB
V
CC_AUX
V
CCPD_HPS
V
CCIO_HPS
V
CCRSTCLK_HPS
V
CCPLL_HPS
V
CC_AUX_SHARED
Power rails that are
only available with
Cyclone V SX, SE,
and ST devices.
Table 10-1 lists the current transient that you may observe at the indicated power rails after powering up
the Cyclone V device, and before configuration starts. These transients have a finite duration bounded by
the time at which the device enters configuration mode. For Cyclone V SX, SE and ST devices, you may
observe the current transient in Table 10-1 after powering up the device, and before all the power supplies
reach the recommended operating range.
Table 10-1: Maximum Power Supply Current Transient and Typical Duration
Typical Duration (µs)Maximum Power Supply
Current Transient (mA)
Power Rail
501000V
CCPD
(26)
,
(27)
200250V
CCIO
(28)
,
(27)
10400V
CC_AUX
(29)
100350V
CC
(29)
50400V
CCPD_HPS
(30)
,
(31)
,
(32)
200100V
CCIO_HPS
(30)
,
(31)
,
(32)
100420V
CC_HPS
(29)
,
(30)
(26)
You may observe the current transient at V
CCPD
only when you do not follow the recommended power-up
sequence. To avoid the current transient at V
CCPD
, follow the recommended power-up sequence.
(27)
The maximum current for V
CCIO
and V
CCPD
applies to all voltage levels supported by the Cyclone V device.
(28)
You may observe the current transient at V
CCIO
if you power up V
CCIO
before V
CCPD
. To avoid the current
transient at V
CCIO
, follow the recommended power-up sequence by powering up V
CCIO
and V
CCPD
together.
(29)
You may observe the current transient at V
CC_AUX
, V
CC
, and V
CC_HPS
with any power-up sequence.
(30)
These power rails are only available on Cyclone V SX, SE and ST devices.
(31)
You may observe the current transient at V
CCIO_HPS
if you power up V
CCIO_HPS
before V
CCPD_HPS
. To avoid
the current transient at V
CCIO_HPS
, follow the recommended power-up sequence by powering up V
CCIO_HPS
and V
CCPD_HPS
together.
(32)
The maximum current for V
CCIO_HPS
and V
CCPD_HPS
applies to all voltage levels supported by the Cyclone V
device.
Power Management in Cyclone V Devices
Altera Corporation
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CV-52010
Power-Up Sequence
10-4
2013.06.28