MCP4901-ESLASHMS datasheet(7/50 Pages) MICROCHIP

7 / 50 page

 2010 Microchip Technology Inc.

DS22248A-page 7

MCP4901/4911/4921

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

—

Input Leakage Current

ILEAKAGE

-1

—

ALDAC = 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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