PIC16C71X
A highly reliable Watchdog Timer with its own on-chip
RC oscillator provides protection against software lock-
up.
1.0
GENERAL DESCRIPTION
The PIC16C71X is a family of low-cost, high-perfor-
mance, CMOS, fully-static, 8-bit microcontrollers with
integrated analog-to-digital (A/D) converters, in the
PIC16CXX mid-range family.
A UV erasable CERDIP packaged version is ideal for
code development while the cost-effective One-Time-
Programmable (OTP) version is suitable for production
in any volume.
All PIC16/17 microcontrollers employ an advanced
RISC architecture.The PIC16CXX microcontroller fam-
ily has 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. Additionally, a large register set gives
some of the architectural innovations used to achieve a
very high performance.
The PIC16C71X family fits perfectly in applications
ranging from security and remote sensors to appliance
control and automotive. The EPROM technology
makes customization of application programs (trans-
mitter codes, motor speeds, receiver frequencies, etc.)
extremely fast and convenient. The small footprint
packages make this microcontroller series perfect for
all applications with space limitations. Low cost, low
power, high performance, ease of use and I/O flexibility
make the PIC16C71X very versatile even in areas
where no microcontroller use has been considered
before (e.g. timer functions, serial communication, cap-
ture and compare, PWM functions and coprocessor
applications).
PIC16CXX microcontrollers typically achieve a 2:1
code compression and a 4:1 speed improvement over
other 8-bit microcontrollers in their class.
1.1
Family and Upward Compatibility
The PIC16C710/71 devices have 36 bytes of RAM, the
PIC16C711 has 68 bytes of RAM and the PIC16C715
has 128 bytes of RAM. Each device has 13 I/O pins. In
addition a timer/counter is available. Also a 4-channel
high-speed 8-bit A/D is provided.The 8-bit resolution is
ideally suited for applications requiring low-cost analog
interface, e.g. thermostat control, pressure sensing,
etc.
Users familiar with the PIC16C5X microcontroller fam-
ily will realize that this is an enhanced version of the
PIC16C5X architecture. Please refer to Appendix A for
a detailed list of enhancements. Code written for the
PIC16C5X can be easily ported to the PIC16CXX fam-
ily of devices (Appendix B).
1.2
Development Support
The PIC16C71X family has special features to reduce
external components, thus reducing cost, enhancing
system reliability and reducing power consumption.
There are four oscillator options, of which the single pin
RC oscillator provides a low-cost solution, the LP oscil-
lator minimizes power consumption, XT is a standard
crystal, and the HS is for High Speed crystals. The
SLEEP (power-down) feature provides a power saving
mode. The user can wake up the chip from SLEEP
through several external and internal interrupts and
resets.
PIC16C71X devices are supported by the complete
line of Microchip Development tools.
Please refer to Section 10.0 for more details about
Microchip’s development tools.
1997 Microchip Technology Inc.
DS30272A-page 3
MICROCHIP [ MICROCHIP ]
