Arria® V Device Handbook: Volume 1: Device Interfaces and Integration

ID 683213
Date 10/18/2023
Public
Document Table of Contents

11.6. Arria V GX, GT, SX, and ST Power-Up Sequence

CAUTION:
To ensure minimum current consumption during power up, and to avoid functionality issue, follow the power-up sequence shown in the following figure. This power-up sequence is required for all Arria® V GX and GT devices, except Arria® V GX A5 and A7, and Arria® V GT C7 devices. However, to ensure minimum current consumption during power up, Altera recommends that you also follow the power-up sequence for the Arria® V GX A5 and A7, and Arria® VGT C7 devices.
Note: If you plan to migrate your design from Arria® V GX A5 and A7, and Arria® V GT C7 devices to other Arria® V devices, your design must adhere to the power-up sequence required for the other Arria® V devices.
Figure 227. Power-Up Sequence Requirement for Arria® V GX and GT DevicesPower up VCCBAT 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 VCCP , VCCR_GXB , VCCT_GXB , and VCCL_GXB together with VCC .


Figure 228. Power-Up Sequence Recommendation for Arria® V SX and ST Devices

Power up the Vccbat at any time. Ramp up the power rails in each group to a minimum of 80% of their recommended operating range before the next group starts.

Table 121 lists the current transient that you may observe at the indicated power rails after powering up the Arria® V device, and before configuration starts. These transients have a finite duration bounded by the time at which the device enters configuration mode. For Arria® V SX and ST devices, you may observe the current transient in Table 121 after powering up the device, and before all the power supplies reach the recommended operating range.

Table 121.  Maximum Power Supply Current Transient and Typical Duration
Power Rail Maximum Power Supply Current Transient (mA) Typical Duration (µs) 46
VCCPD 47, 48 1250 50
VCCIO 48, 49 350 200
VCC_AUX 50 450 10
VCC 50 700 100
VCCPD_HPS 51, 52, 53 400 50
VCCIO_HPS 51, 54, 53 100 200
VCC_HPS 50, 51 420 100

For details about the minimum current requirements, refer to the Early Power Estimator (EPE), and compare to the information listed in Table 121. If the current transient exceeds the minimum current requirements in the EPE, you need to take the information into consideration for your power regulator design.

46 Only typical duration is provided as it may vary on the board design.
47 You may observe the current transient at VCCPD only when you do not follow the recommended power-up sequence. To avoid the current transient at VCCPD, follow the recommended power-up sequence.
48 The maximum current for VCCIO and VCCPD applies to all voltage levels supported by the Arria V device.
49 You may observe the current transient at VCCIO if you power up VCCIO before VCCPD. To avoid the current transient at VCCIO, follow the recommended power-up sequence by powering up VCCIO and VCCPD together.
50 You may observe the current transient at VCC_AUX, VCC and VCC_HPS with any power-up sequence.
51 These power rails are only available on Arria® V SX and ST devices.
52 You may observe the current transient at VCCPD_HPS only when you do not follow the recommended power-up sequence. To avoid the current transient at VCCPD_HPS , follow the recommended power-up sequence.
53 The maximum current for VCCIO_HPS and VCCPD_HPS applies to all voltage levels supported by the Arria® V device.
54 You may observe the current transient at VCCIO_HPS if you power up VCCIO_HPS before VCCPD_HPS. To avoid the current transient at VCCIO_HPS, follow the recommended power-up sequence by powering up VCCIO_HPS and VCCPD_HPS together.