PIC16F628A-ISLASHML datasheet(7/168 Pages) MICROCHIP

7 / 168 page

 2002 Microchip Technology Inc.

Preliminary

DS40044A-page 5

PIC16F627A/628A/648A

1.0

GENERAL DESCRIPTION

The PIC16F627A/628A/648A are 18-Pin FLASH-

based members of the versatile PIC16CXX family of

low cost, high performance, CMOS, fully-static, 8-bit

microcontrollers.

All PICmicro® microcontrollers employ an advanced

RISC architecture. The PIC16F627A/628A/648A have

enhanced core features, 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 fea-

tures to reduce external components, thus reducing

system cost, enhancing system reliability and reducing

power consumption.

The PIC16F627A/628A/648A has 8 oscillator configu-

rations. The single-pin RC oscillator provides a low cost

solution. The LP oscillator minimizes power consump-

tion, XT is a standard crystal, and INTOSC is a self-

contained precision two-speed internal oscillator. The

HS 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 sev-

eral

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 families.

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 pro-

grammer. 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 Mem-

ory (words)

1024

2048

4096

1024

2048

4096

Memory

RAM Data Memory

(bytes)

224

256

224

256

EEPROM Data Mem-

ory (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)

22222

Peripherals Capture/Compare/

PWM modules

111111

Serial Communications

USART

Internal Voltage

Reference

Yes

Interrupt Sources

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 PICmicro® 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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