PIC16F527 Datasheet, PDF (6/12 Pages) Microchip Technology – 8-bit PIC® Microcontrollers

Safety-Critical Features
Summary
Engineers are commonly are faced with the challenge of
complying with safety standards or the need to add a fail-safe
operation in their design, while keeping cost and complexity
to a minimum. Additionally, Microchip offers a family of 8-bit
MCUs which integrates fault-detecting hardware features to
assist you in developing your safety-critical applications. This
high level of integration makes these MCUs suitable for many
applications like home appliances, industrial machinery, RPM
indicators and power supplies.
The Window Watchdog Timer (WWDT), Cyclic Redundancy
Check with Memory Scan (CRC/SCAN) and Hardware Limit
Timer (HLT) help ease implementation of safety standards
or fail-safe features. In addition, the higher-memory products
include additional peripherals to support control and power
management applications. By eliminating code overhead
and external components, these features help reduce
design complexity and save costs, while also enabling faster
time-to-market.
Highlights
■ Cyclic Redundancy Check with Memory Scan
(CRC/SCAN): Automatically calculates CRC checksum
of Program/DataEE memory for non-volatile memory
integrity. Additionally provides a general purpose 16-bit
CRC for use with memory and communications data.
Monitoring is done in hardware with no interruption to
the CPU, reducing overall code.
■ Windowed Watchdog Timer (WWDT): System
supervisory circuit that generates a reset when
software timing anomalies are detected within a
configurable critical window. Gives engineers the
flexibility and ease to add monitoring to design.
■ 24-bit Signal Measurement Timer (SMT): Performs
high-resolution measurements of any digital signal
in hardware, resulting in more precise and accurate
measurements. This can be used as a standard timer,
ideal for speed control, range finding and RPM indicators.
■ Hardware Limit Timer (HLT): General purpose 8-bit
timer/counter with hardware monitoring capabilities
for missed periodic events and fault detection of
external hardware.
Featured 8-bit MCUs with Safety-Critical Features
■ Zero Cross Detect (ZCD): Detects high-voltage
AC signals at the lowest crossing. Simplifies TRIAC
and switching control, eliminating the need for
additional components.
■ Complementary Waveform Generator (CWG): Provides
non-overlapping complementary waveforms for various
inputs including Comparators and PWM, while offering
enhanced features like deadband control, auto
shutdown, auto reset, phase control, blanking control.
■ Capture Compare and PWM (CCP): Includes a 10-bit
PWM which can be utilized to implement a variety of
motor control and lighting applications.
Development Tools
PICkit Low Pin Count Development Board
(DM164130-9)
■ Development board for 8, 14, 20-pin
8-bit PIC MCU
■ Populated with PIC16F1829-I/P
and ships with PIC18F14K22-I/P
(20-pin) MCU
■ This board package contains assembled board with area for
prototyping circuits and bare board as well
■ Software can be rewritten to accommodate
new technologies
Device
PIC12(L)F1612 3.5 256 6 4/1 1 4 1 2/0 1 0 2/1 0 ü ü 0 – 0 0
PIC16(L)F1613 3.5 256 12 4/1 2 8 1 2/0 1 0 2/1 0 ü ü 0 – 0 0
www.microchip.com/8-bit
6 8-bit PIC®Microcontroller Solutions