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Microchip Technology offers a complete line of 8-bit microcontrollers to
meet the needs of high-performance embedded applications using the
Controller Area Network (CAN) bus. Microchip’s portfolio of 8-bit Flash MCUs
with integrated CAN 2.0B functionality allows execution of complex control
algorithms and network interfaces on the same device. On-chip peripherals
include A/D converters, comparators, pulse-width modulators, addressable
USART, and Master I
2
C™/SPI™.
Microchip also offers ECAN™ technology on many PICmicro MCUs. ECAN
Technology is a flexible CAN 2.0B interface specifically designed to address
embedded control applications in the automotive and general-purpose market
segments. The ECAN module supports the full CAN implementation along
with supporting the DeviceNet™ protocol as well as a FIFO state machine.
High Performance RISC CPU:
• C compiler optimized architecture instruction set
• Linear program memory addressing to 32 Kbytes
• 65536 bytes on-chip EPROM/FLASH program memory
– 32768 single word instructions
• 3072 x 8 general purpose registers (SRAM)
• 256 bytes of backup EEPROM data memory
• Up to 10 MIPs operation:
– DC - 40 MHz clock input
– 4 MHz - 10 MHz osc./clock input with PLL active
• 16-bit wide instructions, 8-bit wide data path
• Priority levels for interrupts
• 8 x 8 Single Cycle Hardware Multiplier
Special Microcontroller Features:
• Power-on Reset (POR), Power-up Timer (PWRT) and
Oscillator Start-up Timer (OST)
• Watchdog Timer (WDT) with its own on-chip RC oscillator for
reliable operation
• Programmable code protection
• Power saving SLEEP mode
• Selectable oscillator options, including:
– 4X Phase Lock Loop (of primary oscillator)
– Secondary oscillator (32 kHz) clock input
• In-Circuit Serial Programming
TM
(ICSP
TM
) via two pins
Peripheral Features:
• High current sink/source 25 mA/25 mA
• Four external interrupt pins
• Timer0 module: 8-bit/16-bit timer/counter with 8-bit
programmable prescaler
• Timer1 module: 16-bit timer/counter
• Timer2 module: 8-bit timer/counter with 8-bit period
register (time-base for PWM)
• Timer3 module: 16-bit timer/counter
• Secondary clock option - Timer1/Timer3
• Capture/Compare/PWM (CCP) modules
CCP pins can be configured as:
– Capture input: 16-bit, max. resolution 6.25 ns
– Compare is 16-bit, max. resolution 100 ns (TCY)
– PWM output: PWM resolution is 1- to 10-bit
Max. PWM frequency @: 8-bit resolution = 156 kHz
10-bit resolution = 39 kHz
• Enhanced CCP module which has all the features of the standard
CCP module, but also has the following features for
advanced motor control
– 1,2, or 4 PWM outputs
– Selectable PWM polarity
– Programmable PWM deadtime
• Master Synchronous Serial Port (MSSP) with two modes
of operation
– 3-wire SPI
TM
(supports all 4 SPI modes)
– I
2
C
TM
Master and Slave mode
• Addressable USART module supports interrupt-on-address bit
• Parallel Slave Port (PSP) module
• Up to 68 I/O pins with individual directional control
Advanced Analog Features:
• 10-bit Analog-to-Digital Converter A/D with:
– Conversion available during SLEEP
• Analog Comparator module with 2 comparators:
– Programmable input and output multiplexing
– Programmable on-chip voltage reference
• Programmable Low Voltage Detection (LVD)
– Supports interrupt-on-low voltage detection
• Programmable Brown-out Reset generation
CAN Bus Module Features:
• Implements full CAN model
• Message bit rates up to 1 Mbps
• Conforms to CAN 2.0B Active Spec with:
– 29-bit identifier fields
– 8-byte message length
• 3 Transmit Message Buffers with individual prioritization
• 2 Receive Message Buffers and 1 Receive Message
Assembly Buffer
• 6 full 29-bit Acceptance Filters mapped to Receive Buffers
• Prioritization of Acceptance Filters
• 2 full 29-bit Acceptance Filter Masks
• Multiple Receive Buffers for high priority messages to ensure
messages are not lost due to overflow
• Advanced Error Management Features
ECAN Module Features:
• Implements full CAN model
• Supports:
–
Standard Bosch CAN 2.0B specifications
–
DeviceNet protocols
-- FIFO state machine
•
Three software configurable operating modes:
-- Legacy
-- Enhance
-- FIFO modes
CMOS Technology:
• Low power, high speed EPROM technology
• Fully static design
• Wide operating voltage range (2.0V to 5.5V)
• Industrial and extended temperature ranges
• Low power consumption
PICmicro® Microcontrollers Featuring CAN and ECAN Modules
