MCP413X datasheet(13/88 Pages) MICROCHIP

13 / 88 page

DS22060B-page 13

MCP413X/415X/423X/425X

TABLE 1-3:

SPI REQUIREMENTS FOR SDI/SDO MULTIPLEXED (READ OPERATION ONLY) (2)

Characteristic

Symbol

Min

Max Units

Conditions

SCK Input Frequency

FSCK

—250

kHz

VDD = 2.7V to 5.5V

CS Active (VIL or VIHH) to SCK↑ input

TcsA2scH

—

SCK input high time

TscH

1.8

—

SCK input low time

TscL

1.8

—

Setup time of SDI input to SCK

↑ edge

TDIV2scH

—

Hold time of SDI input from SCK

↑ edge

TscH2DIL40

—

CS Inactive (VIH) to SDO output hi-impedance

TcsH2DOZ

—

Note 1

SDO data output valid after SCK

↓ edge

TscL2DOV—

1.6

SDO data output valid after

CS Active (VIL or VIHH)

TssL2doV

—

CS Inactive (VIH) after SCK↓ edge

TscH2csI

100

—

Hold time of CS Inactive (VIH) to

CS Active (VIL or VIHH)

TcsA2csI

—

Note 1: This specification by design.

2: This table is for the devices where the SPI’s SDI and SDO pins are multiplexed (SDI/SDO) and a Read

command is issued. This is NOT required for SDI/SDO operation with the Increment, Decrement, or Write

commands. This data rate can be increased by having external pull-up resistors to increase the rising

edges of each bit.

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