MCP2140-ISO datasheet(29/58 Pages) MICROCHIP

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 2003 Microchip Technology Inc.

Preliminary

DS21790A-page 29

MCP2140

4.2

Timing Parameter Symbology and Load Conditions

The timing parameter symbols have been created following one of the following formats:

4.2.1

TIMING CONDITIONS

The temperature and voltages specified in Table 4-2 apply to all timing specifications, unless otherwise noted.

Figure 4-2 specifies the load conditions for the timing specifications.

TABLE 4-1:

SYMBOLOGY

TABLE 4-2:

AC TEMPERATURE AND VOLTAGE SPECIFICATIONS

FIGURE 4-2:

LOAD CONDITIONS FOR DEVICE TIMING SPECIFICATIONS

1. TppS2ppS

2. TppS

Frequency

TTime

EError

Lowercase letters (pp) and their meanings:

Input or Output pin

osc

Oscillator

Receive

Transmit

bitclk

RX/TX BITCLK

RST

Reset

drt

Device Reset Timer

Uppercase letters and their meanings:

FFall

PPeriod

HHigh

RRise

Invalid (high-impedance)

VValid

LLow

High-impedance

AC Specifications

Electrical Characteristics:

Standard Operating Conditions (unless otherwise stated):

Operating temperature: -40

°C ≤ TA ≤ +85°C (industrial)

Operating voltage VDD range as described in DC spec Section 4.1.

VSS

CL = 50 pF for all pins except OSC2

15 pF for OSC2 when external clock is used to drive OSC1

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