MCP4902-ESLASHST datasheet(7/48 Pages) MICROCHIP

7 / 48 page

 2010 Microchip Technology Inc.

DS22250A-page 7

MCP4902/4912/4922

AC CHARACTERISTICS (SPI TIMING SPECIFICATIONS)

FIGURE 1-1:

SPI Input Timing Data.

Electrical Specifications: Unless otherwise indicated, VDD= 2.7V – 5.5V, TA= -40 to +125°C.

Typical values are at +25°C.

Parameters

Sym

Min

Typ

Max

Units

Conditions

Schmitt Trigger High-Level

Input Voltage (All digital input

pins)

VIH

0.7 VDD

——

Schmitt Trigger Low-Level

Input Voltage

(All digital input pins)

VIL

——

0.2 VDD

Hysteresis of Schmitt Trigger

Inputs

VHYS

—0.05 VDD

—V

Input Leakage Current

ILEAKAGE

-1

—

A

SHDN = LDAC = CS = SDI =

SCK + VREF = VDD or VSS

Digital Pin Capacitance

(All inputs/outputs)

CIN,

COUT

—10

—

VDD = 5.0V, TA = +25°C,

fCLK = 1 MHz (Note 1)

Clock Frequency

FCLK

——

MHz TA = +25°C (Note 1)

Clock High Time

tHI

—

Note 1

Clock Low Time

tLO

—

Note 1

CS Fall to First Rising CLK

Edge

tCSSR

—

Applies only when CS falls with

CLK high. (Note 1)

Data Input Setup Time

tSU

—

Note 1

Data Input Hold Time

tHD

—

Note 1

SCK Rise to CS Rise Hold

Time

tCHS

—

Note 1

CS High Time

tCSH

—

Note 1

LDAC Pulse Width

tLD

100

—

Note 1

LDAC Setup Time

tLS

—

Note 1

SCK Idle Time before CS Fall

tIDLE

—

Note 1

Note 1:

This parameter is ensured by design and not 100% tested.

SCK

LDAC

tCSSR

tHD

tSU

tLO

tCSH

tCHS

LSb in

MSb in

tIDLE

Mode 1,1

Mode 0,0

tHI

tLD

tLS

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