MPC8315ECVRAGDA datasheet(13/112 Pages) FREESCALE

13 / 112 page

MPC8315E PowerQUICC™ II Pro Processor Hardware Specifications, Rev. 0

Freescale Semiconductor

Electrical Characteristics

When switching from normal mode to D3 warm (standby) mode, first turn off the switchable I/O voltage

supply and then turn off the switchable core voltage supply. Similarly, when switching from D3 warm

(standby) mode to normal mode, first turn on the switchable core voltage supply and then turn on the

switchable I/O voltage supply.

CAUTION

When the device is in D3 warm (standby) mode, all external voltage

supplies applied to any I/O pins, with the exception of wake-up pins, must

be turned off. Applying supplied external voltage to any I/O pins, except the

wake up pins, while the device is in D3 warm standby mode may cause

permanent damage to the device.

An example of the power-up sequence is shown in Figure 4 when implemented along with low power D3

warm mode.

Figure 4. Power Up Sequencing Example with Low power D3 Warm Mode

The switchable and continuous supplies can be combined when the D3 warm mode is not used.

The SATA power supplies VDD33PLL and VDD33ANA should go high after NVDD3_OFF supply and

go low before NVDD3_OFF supply. The NVDD3_OFF voltage levels should not drop below the

VDD33PLL, VDD33ANA voltages at any time.

Continuous I/O Voltage

Continuous Core Voltage

90%

PORESET

tSYS_CLK_IN / tPCI_SYNC_IN >= 32 clock

Switchable Core Voltage

Switchable I/O Voltage

(LVDDx_ON, NVDDx_ON)

(GVDD, LVDDx_OFF, NVDDx_OFF)

VDDC

(VDD)

MPC8315ECVRAGDA Datasheet(PDF) 13 Page - Freescale Semiconductor, Inc