Microchip PIC24FJ32GA004 Handleiding

Microchip Niet gecategoriseerd PIC24FJ32GA004

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PIC24FJXXXGA0XX

1.0 DEVICE OVERVIEW

This document defines the programming specification

for the PIC24FJXXXGA0XX family of 16-bit micro-

controller devices. This programming specification is

required only for those developing programming support

for the PIC24FJXXXGA0XX family. Customers using

only one of these devices should use development

tools that already provide support for device

programming.

This specification includes programming specifications

for the following devices:

2.0 PROGRAMMING OVERVIEW

OF THE PIC24FJXXXGA0XX

FAMILY

There are two methods of programming the

PIC24FJXXXGA0XX family of devices discussed in

this programming specification. They are:

• In-Circuit Serial Programming™ (ICSP™)

• Enhanced In-Circuit Serial Programming

(Enhanced ICSP)

The ICSP programming method is the most direct

method to program the device; however, it is also the

slower of the two methods. It provides native, low-level

programming capability to erase, program and verify

the chip.

The Enhanced In-Circuit Serial Programming

(Enhanced ICSP) protocol uses a faster method that

takes advantage of the programming executive, as

illustrated in Figure 2-1. The programming executive

provides all the necessary functionality to erase, pro-

gram and verify the chip through a small command set.

The command set allows the programmer to program

the PIC24FJXXXGA0XX devices without having to

deal with the low-level programming protocols of the

chip.

FIGURE 2-1: PROGRAMMING SYSTEM

OVERVIEW FOR

ENHANCED ICSP™

This specification is divided into major sections that

describe the programming methods independently.

Section 4.0 “Device Programming – Enhanced

ICSP” describes the Run-Time Self-Programming

(RTSP) method. Section 3.0 “Device Programming –

ICSP” describes the In-Circuit Serial Programming

method.

2.1 Power Requirements

All devices in the PIC24FJXXXGA0XX family are dual

voltage supply designs: one supply for the core and

peripherals and another for the I/O pins. A regulator is

provided on-chip to alleviate the need for two external

voltage supplies.

All of the PIC24FJXXXGA0XX devices power their core

digital logic at a nominal 2.5V. To simplify system

design, all devices in the PIC24FJXXXGA0XX family

incorporate an on-chip regulator that allows the device

to run its core logic from VDD.

• PIC24FJ16GA002 • PIC24FJ96GA006

• PIC24FJ16GA004 • PIC24FJ96GA008

• PIC24FJ32GA002 • PIC24FJ96GA010

• PIC24FJ32GA004 • PIC24FJ128GA006

• PIC24FJ48GA002 • PIC24FJ128GA008

• PIC24FJ48GA004 • PIC24FJ128GA010

• PIC24FJ64GA002

• PIC24FJ64GA004

• PIC24FJ64GA006

• PIC24FJ64GA008

• PIC24FJ64GA010

PIC24FJXXXGA0XX

Programmer Programming

Executive

On-Chip Memory

PIC24FJXXXGA0XX Flash Programming Specification

PIC24FJXXXGA0XX

The regulator provides power to the core from the other

VDD pins. A low-ESR capacitor (such as tantalum) must

be connected to the VDDCORE pin (Figure 2-2 and

Figure 2-3). This helps to maintain the stability of the

regulator. The specifications for core voltage and capac-

itance are listed in Section 7.0 “AC/DC Characteristics

and Timing Requirements”.

FIGURE 2-2: CONNECTIONS FOR THE

ON-CHIP REGULATOR

(64/80/100-PIN DEVICES)

FIGURE 2-3: CONNECTIONS FOR THE

ON-CHIP REGULATOR

(28/44-PIN DEVICES)

VDD

ENVREG

VDDCORE/VCAP

VSS

PIC24FJXXXGA0XX

CEFC

3.3V

Regulator Enabled (ENVREG tied to VDD):

(10 μF typ)

Note 1: These are typical operating voltages. Refer

Section 7.0 “AC/DC Characteristics and

Timing Requirements”

for the full operating

ranges of VDD and VDDCORE.

VDD

ENVREG

VDDCORE/VCAP

VSS

PIC24FJXXXGA0XX

3.3V(1)

2.5V(1)

Regulator Disabled (ENVREG tied to ground):

VDD

ENVREG

VDDCORE/VCAP

VSS

PIC24FJXXXGA0XX

2.5V(1)

Regulator Disabled (VDD tied to VDDCORE):

VDD

DISVREG

VDDCORE/VCAP

VSS

PIC24FJXXXGA0XX

3.3V(1)

2.5V (1)

Regulator Disabled (DISVREG tied to VDD):

VDD

DISVREG

VDDCORE/VCAP

VSS

PIC24FJXXXGA0XX

2.5V(1)

Regulator Disabled (VDD tied to VDDCORE):

VDD

DISVREG

VDDCORE/VCAP

VSS

PIC24FJXXXGA0XX

CEFC

3.3V

(10 μF typ)

Regulator Enabled (DISVREG tied to V SS):

Note 1: These are typical operating voltages. Refer

Section 7.0 “AC/DC Characteristics and

Timing Requirements”

for the full operating

ranges of VDD and VDDCORE.

PIC24FJXXXGA0XX

2.2 Program Memory Write/Erase

Requirements

The Flash program memory on the PIC24FJXXXGA0XX

devices has a specific write/erase requirement that must

be adhered to for proper device operation. The rule is

that any given word in memory must not be written more

than twice before erasing the page in which it is located.

Thus, the easiest way to conform to this rule is to write

all the data in a programming block within one write

cycle. The programming methods specified in this

specification comply with this requirement.

2.3 Pin Diagrams

The pin diagrams for the PIC24FJXXXGA0XX family

are shown in the following figures. The pins that are

required for programming are listed in Table 2-1 and

are shown in bold letters in the figures. Refer to the

appropriate device data sheet for complete pin

descriptions.

TABLE 2-1: PIN DESCRIPTIONS (DURING PROGRAMMING)

Note: Writing to a location multiple times without

erasing is not recommended.

Pin Name

During Programming

Pin Name Pin Type Pin Description

MCLR MCLR P Programming Enable

ENVREG ENVREG I Enable for On-Chip Voltage Regulator

DISVREG(1) DISVREG I Disable for On-Chip Voltage Regulator

VDD and AVDD(2) VDD P Power Supply

VSS and AVSS(2) VSS P Ground

VDDCORE VDDCORE P Regulated Power Supply for Core

PGC1 PGC I Primary Programming Pin Pair: Serial Clock

PGD1 PGD I/O Primary Programming Pin Pair: Serial Data

PGC2 PGC I Secondary Programming Pin Pair: Serial Clock

PGD2 PGD I/O Secondary Programming Pin Pair: Serial Data

Legend: I = Input, O = Output, P = Power

Note 1: Applies to 28 and 44-pin devices only.

2: All power supply and ground pins must be connected, including analog supplies (AVDD) and ground

(AVSS).

Product specificaties

Merk:	Microchip
Categorie:	Niet gecategoriseerd
Model:	PIC24FJ32GA004

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