Описание
The AT90CAN32 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 AT90CAN32 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 AT90CAN32 is provides the following features: 32K bytes of In-System Programmable Flash with Read-While-Write capabilities, 1K bytes EEPROM, 2K bytes SRAM, 53 general purpose I/O lines, 32 general purpose working registers, a CAN controller, Real Time Counter (RTC), four flexible Timer/Counters with compare modes and PWM, 2 USARTs, a byte oriented Two-wire Serial Interface, an 8-channel 10-bit ADC with optional differential input stage with programmable gain, a programmable Watchdog Timer with Internal Oscillator, an SPI serial port, IEEE std. 1149.1 compliant JTAG test interface, also used for accessing the On-chip Debug system and programming and five software selectable power saving modes.
- 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 Bytes of In-System Reprogrammable Flash (AT90CAN3)
- Endurance: 10,000 Write/Erase Cycles
- Optional Boot Code 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
- 1KBytes EEPROM (Endurance: 100,000 Write/Erase Cycles) (AT90CAN32)
- 2KBytes Internal SRAM (AT90CAN32)
- 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 (1)
- 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 Auto baud)
- Peripheral Features
- 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
