PIC16F627A/628A/648A
1.0
GENERAL DESCRIPTION
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.
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.
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
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:
Clock
PIC16F627A/628A/648A FAMILY OF DEVICES
PIC16F627A
PIC16F628A
20
2048
224
128
TMR0, TMR1,
TMR2
2
1
USART
Yes
10
16
3.0-5.5
Yes
18-pin DIP,
SOIC, 20-pin
SSOP,
28-pin QFN
PIC16F648A
20
4096
256
256
TMR0, TMR1,
TMR2
2
1
USART
Yes
10
16
3.0-5.5
Yes
18-pin DIP,
SOIC, 20-pin
SSOP,
28-pin QFN
PIC16LF627A
4
1024
224
128
TMR0, TMR1,
TMR2
2
1
USART
Yes
10
16
2.0-5.5
Yes
18-pin DIP,
SOIC, 20-pin
SSOP,
28-pin QFN
PIC16LF628A
4
2048
224
128
TMR0, TMR1,
TMR2
2
1
USART
Yes
10
16
2.0-5.5
Yes
18-pin DIP,
SOIC, 20-pin
SSOP,
28-pin QFN
PIC16LF648A
4
4096
256
256
TMR0, TMR1,
TMR2
2
1
USART
Yes
10
16
2.0-5.5
Yes
18-pin DIP,
SOIC, 20-pin
SSOP,
28-pin QFN
20
1024
224
128
TMR0, TMR1,
TMR2
2
1
USART
Yes
10
16
3.0-5.5
Yes
18-pin DIP,
SOIC, 20-pin
SSOP,
28-pin QFN
Maximum Frequency
of Operation (MHz)
FLASH Program Mem-
ory (words)
Memory
RAM Data Memory
(bytes)
EEPROM Data Mem-
ory (bytes)
Timer module(s)
Comparator(s)
Peripherals
Capture/Compare/
PWM modules
Serial Communications
Internal Voltage
Reference
Interrupt Sources
I/O Pins
Features
Voltage Range (Volts)
Brown-out Reset
Packages
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.
2002 Microchip Technology Inc.
Preliminary
DS40044A-page 5
MICROCHIP [ MICROCHIP TECHNOLOGY ]
