The AT90CAN128 is a low-power CMOS 8-bit microcontroller based on the AVR enhanced RISC architecture. By executing powerful instructions in a single clock cycle, the AT90CAN128 achieves throughputs approaching 1 MIPS per MHz allowing the system designer to optimize power consumption versus processing speed.
The AVR core combines a rich instruction set with 32 general purpose working registers. All 32 registers are directly connected to the Arithmetic Logic Unit (ALU), allowing two independent registers to be accessed in one single instruction executed in one clock cycle. The resulting architecture is more code efficient while achieving throughputs up to ten times faster than conventional CISC microcontrollers.
The Idle mode stops the CPU while allowing the SRAM, Timer/Counters, SPI/CAN ports and interrupt system to continue functioning. The Power-down mode saves the register contents but freezes the Oscillator, disabling all other chip functions until the next interrupt or Hardware Reset. In Power-save mode, the asynchronous timer continues to run, allowing the user to maintain a timer base while the rest of the device is sleeping. The ADC Noise Reduction mode stops the CPU and all I/O modules except Asynchronous Timer and ADC, to minimize switching noise during ADC conversions. In Standby mode, the Crystal/Resonator Oscillator is running while the rest of the device is sleeping. This allows very fast start-up combined with low power consumption.
The AT90CAN128 AVR is supported with a full suite of program and system development tools including: C compilers, macro assemblers, program debugger/simulators, incircuit emulators, and evaluation kits.The ATmega128 AVR microcontroller can be made compatible with the AT90CAN128, refer to Application Note AVR 096, on the Atmel web site.
Features
- • High-performance, Low-power AVR® 8-bit Microcontroller
- • Advanced RISC Architecture
– 133 Powerful Instructions – Most Single Clock Cycle Execution
– 32 x 8 General Purpose Working Registers + Peripheral Control Registers
– Fully Static Operation
– Up to 16 MIPS Throughput at 16 MHz
– On-chip 2-cycle Multiplier
- • Non volatile Program and Data Memories
– 32K/64K/128K Bytes of In-System Reprogrammable Flash (AT90CAN32/64/128)
- • Endurance: 10,000 Write/Erase Cycles
– Optional Boot Code Section with Independent Lock Bits
- • Selectable Boot Size: 1K Bytes, 2K Bytes, 4K Bytes or 8K Bytes
- • In-System Programming by On-Chip Boot Program (CAN, UART)
- • True Read-While-Write Operation
– 1K/2K/4K Bytes EEPROM (Endurance: 100,000 Write/Erase Cycles) (AT90CAN32/64/128)
– 2K/4K/4K Bytes Internal SRAM (AT90CAN32/64/128)
– Up to 64K Bytes Optional External Memory Space
– Programming Lock for Software Security
- • JTAG (IEEE std. 1149.1 Compliant) Interface
– Boundary-scan Capabilities According to the JTAG Standard
– Programming Flash (Hardware ISP), EEPROM, Lock & Fuse Bits
– Extensive On-chip Debug Support
- • CAN Controller 2.0A & 2.0B - ISO 16845 Certified
– 15 Full Message Objects with Separate Identifier Tags and Masks
– Transmit, Receive, Automatic Reply and Frame Buffer Receive Modes
– 1Mbits/s Maximum Transfer Rate at 8 MHz
– Time stamping, TTC & Listening Mode (Spying or Autobaud)
– Programmable Watchdog Timer with On-chip Oscillator
– 8-bit Synchronous Timer/Counter-0
- • 10-bit Prescaler
- • External Event Counter
- • Output Compare or 8-bit PWM Output
– 8-bit Asynchronous Timer/Counter-2
- • 10-bit Prescaler
- • External Event Counter
- • Output Compare or 8-Bit PWM Output
- • 32Khz Oscillator for RTC Operation
– Dual 16-bit Synchronous Timer/Counters-1 & 3
- • 10-bit Prescaler
- • Input Capture with Noise Canceler
- • External Event Counter
- • 3-Output Compare or 16-Bit PWM Output
- • Output Compare Modulation
– 8-channel, 10-bit SAR ADC
- • 8 Single-ended Channels
- • 7 Differential Channels
- • 2 Differential Channels With Programmable Gain at 1x, 10x, or 200x
– On-chip Analog Comparator
– Byte-oriented Two-wire Serial Interface
– Dual Programmable Serial USART
– Master/Slave SPI Serial Interface
- • Programming Flash (Hardware ISP)
- • Special Microcontroller Features
– Power-on Reset and Programmable Brown-out Detection
– Internal Calibrated RC Oscillator
– 8 External Interrupt Sources
– 5 Sleep Modes: Idle, ADC Noise Reduction, Power-save, Power-down & Standby
– Software Selectable Clock Frequency
– Global Pull-up Disable
– 53 Programmable I/O Lines
– 64-lead TQFP and 64-lead QFN
– 2.7 - 5.5V
– Industrial (-40°C to +85°C)
– 8 MHz at 2.7V - Industrial range
– 16 MHz at 4.5V - Industrial range