MCP23017-ESLASHML datasheet(8/42 Pages) MICROCHIP

8 / 42 page

MCP23017/MCP23S17

DS20001952C-page 8

 2005-2016 Microchip Technology Inc.

FIGURE 1-5:

SPI INPUT TIMING

FIGURE 1-6:

SPI OUTPUT TIMING

TABLE 1-4:

SPI INTERFACE REQUIREMENTS

SPI Interface AC Characteristics: Unless otherwise noted, 1.8V

V

DD  5.5V at -40C  TA  +125C

Param.

No.

Characteristic

Sym.

Min.

Typ.

Max.

Units

Conditions

—

Clock Frequency

FCLK

—

MHz

1.8V – 5.5V

—

MHz

2.7V – 5.5V

—

MHz

4.5V – 5.5V

1CS Setup Time

TCSS

—

2CS Hold Time

TCSH

100

—

1.8V – 5.5V

—

2.7V – 5.5V

3CS Disable Time

TCSD

100

—

1.8V – 5.5V

—

2.7V – 5.5V

Data Setup Time

TSU

—

1.8V – 5.5V

—

2.7V – 5.5V

Note 1:

This parameter is characterized, not 100% tested.

SCK

LSB in

MSB in

High-Impedance

Mode 1,1

Mode 0,0

Note 1:

When using SPI Mode 1,1 the CS pin needs to be toggled once before the first communication after

power-up.

CS (1)

SCK

MSB out

LSB out

Don’t Care

Mode 1,1

Mode 0,0

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