MA320002【PDF 31/208 页】MODULE PLUG-IN PIC32 USB OTG

您好，
买卖IC网欢迎您。
请登录
免费注册

Sheet目录1227

27页 28页 29页 30页 [31页]32页 33页 34页 35页

PIC32MX3XX/4XX

2.0

GUIDELINES FOR GETTING

2.2

Decoupling Capacitors

STARTED WITH 32-BIT

MICROCONTROLLERS

Note 1: This data sheet summarizes the features

of the PIC32MX3XX/4XX family of

devices. It is not intended to be a

comprehensive reference source. To

complement the information in this data

sheet, refer to the “PIC32MX Family

Reference Manual” , which is available

from the Microchip web site

(www.microchip.com/PIC32).

2: Some registers and associated bits

described in this section may not be avail-

able on all devices. Refer to Section 4.0

“Memory Organization” in this data

sheet for device-specific register and bit

information.

2.1 Basic Connection Requirements

Getting started with the PIC32MX3XX/4XX family of

32-bit Microcontrollers (MCUs) requires attention to a

minimal set of device pin connections before

proceeding with development. The following is a list of

pin names, which must always be connected:

? All V DD and V SS pins

(see Section 2.2 “Decoupling Capacitors” )

? All AV DD and AV SS pins (regardless if ADC module

is not used)

(see Section 2.2 “Decoupling Capacitors” )

? V CAP /V DDCORE

(see Section 2.3 “Capacitor on Internal Voltage

Regulator (V CAP /V DDCORE )” )

? MCLR pin

(see Section 2.4 “Master Clear (MCLR) Pin” )

? PGECx/PGEDx pins used for In-Circuit Serial

Programming? (ICSP?) and debugging purposes

(see Section 2.5 “ICSP Pins” )

? OSC1 and OSC2 pins when external oscillator

source is used

(see Section 2.8 “External Oscillator Pins” )

Additionally, the following pins may be required:

? V REF +/V REF - pins used when external voltage

reference for ADC module is implemented

The use of decoupling capacitors on every pair of

power supply pins, such as V DD , V SS , AV DD and

AV SS is required. See Figure 2-1.

Consider the following criteria when using decoupling

capacitors:

? Value and type of capacitor: Recommendation

of 0.1 μF (100 nF), 10-20V. This capacitor should

be a low-ESR and have resonance frequency in

the range of 20 MHz and higher. It is

recommended that ceramic capacitors be used.

? Placement on the printed circuit board: The

decoupling capacitors should be placed as close

to the pins as possible. It is recommended to

place the capacitors on the same side of the

board as the device. If space is constricted, the

capacitor can be placed on another layer on the

PCB using a via; however, ensure that the trace

length from the pin to the capacitor is within

one-quarter inch (6 mm) in length.

? Handling high frequency noise: If the board is

experiencing high frequency noise, upward of

tens of MHz, add a second ceramic-type capacitor

in parallel to the above described decoupling

capacitor. The value of the second capacitor can

be in the range of 0.01 μF to 0.001 μF. Place this

second capacitor next to the primary decoupling

capacitor. In high-speed circuit designs, consider

implementing a decade pair of capacitances as

close to the power and ground pins as possible.

For example, 0.1 μF in parallel with 0.001 μF.

? Maximizing performance: On the board layout

from the power supply circuit, run the power and

return traces to the decoupling capacitors first,

and then to the device pins. This ensures that the

decoupling capacitors are first in the power chain.

Equally important is to keep the trace length

between the capacitor and the power pins to a

minimum thereby reducing PCB track inductance.

Note:

The AV DD and AV SS pins must be

connected independent of ADC use and

ADC voltage reference source.

? 2010 Microchip Technology Inc.

DS61143G-page 31

发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

*型号	*数量	厂商	批号	封装

添加更多采购

我的联系方式

*

*

*

相关PDF资料

MA320011 MODULE PLUG-IN PIC32MX220F32D

MA330024 MODULE PLUG-IN DSPIC33F 100TQFP

MA330027 MODULE PLUG-IN DSPIC33F 100TQFP

MA330029 MODULE PLUG-IN DSPIC33FJ16GP102

MA9D00-42 DSUB CONN W/DIAGNOSTIC PORT STRT

MAI ADAPTER PUSH-ON/M-SWTCH ATTCHMNT

MAV0020RP VARISTOR ARRY 2ELEMENT 120V 0405

MAX11503EVKIT+ KIT EVAL FOR MAX11503

相关代理商/技术参数

MA320002-2 制造商:Microchip Technology Inc 功能描述: 制造商:Microchip Technology Inc 功能描述:PIC32MX4XX 100 TO 100-PIN USB PIM - Boxed Product (Development Kits) 制造商:Microchip Technology Inc 功能描述:MODULE PLUG-IN PIC32MX4XX 制造商:Microchip Technology Inc 功能描述:PIC32MX4 100PIN USB PLUG IN 制造商:Microchip Technology Inc 功能描述:PIC32MX450 100 Pin to 100 Pin USB Plug in Module 制造商:Microchip Technology Inc 功能描述:Daughter Cards & OEM Boards PIC32 MX450 100-Pin USB PIM 制造商:Microchip Technology Inc 功能描述:PIC32MX4xx 100 to 100-Pin USB PIM, Plug-in Modules

MA320003 功能描述:子卡和OEM板 PIC32MX USB/CAN PIM RoHS:否制造商:BeagleBoard by CircuitCo 产品:BeagleBone LCD4 Boards 用于:BeagleBone - BB-Bone - Open Source Development Kit

MA320011 功能描述:子卡和OEM板 PIC32MX250F128D PIM RoHS:否制造商:BeagleBoard by CircuitCo 产品:BeagleBone LCD4 Boards 用于:BeagleBone - BB-Bone - Open Source Development Kit

MA320012 制造商:Microchip Technology Inc 功能描述:PIC32MZ2048EC 100-100PIN PIM - Boxed Product (Development Kits) 制造商:Microchip Technology Inc 功能描述:MOD PIM PIC32MZ2048EC 100PIN 制造商:Microchip Technology Inc 功能描述:100 to 100 Pin Plug-In Module for PIC32MZ EC Series 制造商:Microchip Technology Inc 功能描述:PIC32MZ2048EC 100-100pin PIM - demonstrate the capabilities of the PIC32MZ EC fa

MA3200-H 制造商:PANASONIC 制造商全称:Panasonic Semiconductor 功能描述:Silicon planar type

MA3200-L 制造商:PANASONIC 制造商全称:Panasonic Semiconductor 功能描述:Silicon planar type

MA3200-M 制造商:PANASONIC 制造商全称:Panasonic Semiconductor 功能描述:Silicon planar type

MA3200W 制造商:PANASONIC 制造商全称:Panasonic Semiconductor 功能描述:Silicon planer type