PIC16F-ESLASHML datasheet(7/178 Pages) MICROCHIP

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DS40044F-page 5

PIC16F627A/628A/648A

1.0

GENERAL DESCRIPTION

The PIC16F627A/628A/648A are 18-pin Flash-based

members of the versatile PIC16F627A/628A/648A

family of low-cost, high-performance, CMOS, fully-

static, 8-bit microcontrollers.

All PIC® microcontrollers employ an advanced RISC

architecture.

The

PIC16F627A/628A/648A

have

enhanced core features, an eight-level deep stack, and

multiple internal and external interrupt sources. The

separate instruction and data buses of the Harvard

architecture allow a 14-bit wide instruction word with

the separate 8-bit wide data. The two-stage instruction

pipeline allows all instructions to execute in a single-

cycle, except for program branches (which require two

cycles). A total of 35 instructions (reduced instruction

set) are available, complemented by a large register

set.

PIC16F627A/628A/648A

microcontrollers

typically

achieve a 2:1 code compression and a 4:1 speed

improvement over other 8-bit microcontrollers in their

class.

PIC16F627A/628A/648A

devices

have

integrated

features to reduce external components, thus reducing

system cost, enhancing system reliability and reducing

power consumption.

The

PIC16F627A/628A/648A

has

oscillator

configurations. The single-pin RC oscillator provides a

low-cost solution. The LP oscillator minimizes power

consumption, XT is a standard crystal, and INTOSC is

a self-contained precision two-speed internal oscillator.

The HS mode is for High-Speed crystals. The EC mode

is for an external clock source.

The Sleep (Power-down) mode offers power savings.

Users can wake-up the chip from Sleep through several

external interrupts, internal interrupts and Resets.

A highly reliable Watchdog Timer with its own on-chip

RC oscillator provides protection against software lock-

up.

Table 1-1 shows the features of the PIC16F627A/628A/

648A mid-range microcontroller family.

A simplified block diagram of the PIC16F627A/628A/

648A is shown in Figure 3-1.

The PIC16F627A/628A/648A series fits in applications

ranging from battery chargers to low power remote

sensors. The Flash technology makes customizing

application programs (detection levels, pulse genera-

tion, timers, etc.) extremely fast and convenient. The

small footprint packages makes this microcontroller

series ideal for all applications with space limitations.

Low cost, low power, high performance, ease of use

and I/O flexibility make the PIC16F627A/628A/648A

very versatile.

1.1

Development Support

The PIC16F627A/628A/648A family is supported by a

full-featured macro assembler, a software simulator, an

in-circuit emulator, a low cost in-circuit debugger, a low

cost development programmer and a full-featured

programmer. A Third Party “C” compiler support tool is

also available.

TABLE 1-1:

PIC16F627A/628A/648A FAMILY OF DEVICES

PIC16F627A

PIC16F628A

PIC16F648A

PIC16LF627A

PIC16LF628A

PIC16LF648A

Clock

Maximum Frequency

of Operation (MHz)

Flash Program

Memory (words)

1024

2048

4096

1024

2048

4096

Memory

RAM Data Memory

(bytes)

224

256

224

256

EEPROM Data

Memory (bytes)

128

256

128

256

Timer module(s)

TMR0, TMR1,

TMR2

TMR0, TMR1,

TMR2

TMR0, TMR1,

TMR2

TMR0, TMR1,

TMR2

TMR0, TMR1,

TMR2

TMR0, TMR1,

TMR2

Comparator(s)

222222

Peripherals

Capture/Compare/

PWM modules

111111

Serial Communications

USART

Internal Voltage

Reference

Yes

Interrupt Sources

101010101010

I/O Pins

Features

Voltage Range (Volts)

3.0-5.5

2.0-5.5

Brown-out Reset

Yes

Packages

18-pin DIP,

SOIC, 20-pin

SSOP,

28-pin QFN

18-pin DIP,

SOIC, 20-pin

SSOP,

28-pin QFN

18-pin DIP,

SOIC, 20-pin

SSOP,

28-pin QFN

18-pin DIP,

SOIC, 20-pin

SSOP,

28-pin QFN

18-pin DIP,

SOIC, 20-pin

SSOP,

28-pin QFN

18-pin DIP,

SOIC, 20-pin

SSOP,

28-pin QFN

All PIC® family devices have Power-on Reset, selectable Watchdog Timer, selectable code-protect and high I/O current capability.

All PIC16F627A/628A/648A family devices use serial programming with clock pin RB6 and data pin RB7.

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