PCI11010C datasheet(36/46 Pages) MICROCHIP

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2025 Microchip Technology Inc. and its subsidiaries

DS00006232A-page 36

PCI11010C

4.4

AC Specifications

This section details the various AC timing specifications of the device.

4.4.1

POWER SEQUENCE TIMING

Power supplies must adhere to the following rules:

• All power supplies of the same voltage must be powered up/down together.

• There is no power-up sequencing requirement. However all power supplies must reach operational levels within

the time periods specified in Table 4-2.

• There is no power-down sequencing or timing requirement, however the device must not be powered for an

extended period of time without all supplies at operational levels.

• Following initial power-on, or if a power supply brownout occurs (i.e., one or more supplies drops below opera-

tional limits), a power-on reset must be executed once all power supplies reach operational levels.

• Do not drive input signals without power supplied to the device.

4.4.2

PCIE TIMING

All device PCIe signals (

PCIE_xx) conform to the voltage, power, and timing characteristics/specifications as set forth

in the PCI Express Base Specification Revision 3.1a. Please refer to the PCI Express Base Specification Revision 3.1a

for additional information.

4.4.3

SMBUS TIMING

All device SMBus signals (

SMBUS_xx) conform to the voltage, power, and timing characteristics/specifications as set

forth in the System Management Bus Specification Revision 2.0. Please refer to the System Management Bus Specifi-

cation, Version 2.0 for additional information. Additionally, when operating at 1 MHz, the SMBus signals confirm to the

timing characteristics/specifications as set forth in the System Management Bus Specification Revision 3.0. Please refer

to the System Management Bus Specification, Version 3.0 for additional information.

4.4.4

UART TIMING

All device UART signals (

UART_xx) conform to the timing characteristics/specifications as set forth in the RS-232,

RS-422 and RS-485 specifications. Please refer to the RS-232, RS-422 and RS-485 specifications for additional infor-

mation.

4.4.5

SPI CONTROLLER TIMING

This section specifies the SPI controller (

SPI_CTRL[0:1]_xx) timing requirements for the device. The SPI controllers

support operation at 30, 20, 15, 12, 10 or 2 MHz.

Note: Violation of these specifications may damage the device.

FIGURE 4-1:

POWER SEQUENCE TIMING

TABLE 4-2:

POWER SEQUENCE TIMING

Symbol

Description

Min

Typ

Max

Unit

tpon

Power supply turn-on time

—

All Power Supply Pins

tpon

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