MCP25020-I/P Просмотр технического описания (PDF) - Microchip Technology

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Компоненты Описание

производитель

MCP25020-I/P

Stand-Alone CAN Controller

Microchip Technology 

MCP2502X/5X

Package Types

PDIP/SOIC

GP0/AN0 1

GP1/AN1 2

GP2/AN2/PWM1 3

GP3/AN3/PWM2 4

GP4/VREF- 5

GP5/VREF+ 6

VSS 7

14 VDD

13 TXCAN/TXRXCAN*

12 RXCAN/NC*

11 GP7/RST/VPP

10 GP6/CLKOUT

9 OSC2

8 OSC1/CLKIN

* One-wire option available on MCP250X5 devices.

Definition of Terms

The following terms are used throughout this

document:

I/O Expander - refers to the integrated circuit (IC)

device being described (MCP2502X/5X).

Input Message - term given to messages that are

received by the MCP2502X/5X and cause the internal

registers to be modified. Once the register modification

has been performed, the MCP2502X/5X transmits a

Command Acknowledge message to indicate that the

command was received and processed.

Command Acknowledge Message - term given to the

message that is automatically transmitted by the

MCP2502X/5X after receiving and processing an input

message.

Information Request Message - term given to

Remote Request messages that are received by the

MCP2502X/5X that subsequently generate an output

message (data frame) in response.

Output Message - term given to the message that the

MCP2502X/5X sends in response to an Information

Request message.

On Bus Message - term given to the message that the

MCP2502X/5X transmits after completing the power-on/

self-configuration sequence at timed intervals, if

enabled.

Self-Configuration - term used to describe the

process of transferring the contents of the EPROM

memory array to the SRAM memory array.

On Bus - term used to describe the condition when the

MCP2502X/5X is fully-configured and ready to

transmit, or receive, on the bus. This is the only state in

which the MCP2502X/5X can transmit on the bus.

Edge Detection - refers to the MCP2502X/5X’s ability

to automatically transmit a message based upon the

occurance of a predefined edge on any digital input.

Threshold Detection - refers to the MCP2502X/5X’s

ability to automatically transmit a message when a

predefined analog threshold is reached.

DS21664D-page 2

© 2007 Microchip Technology Inc.

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