III. MCU
Mikrocontroller besitzen in Unterscheidung zum Mikroprozessor (der auf Rechenleistung getrimmt ist) zusätzliche Peripheriekomponenten On-the-Chip.
So bspw. der AT90S1200 von ATMEL. Dieser RISC-Controller im 20poligen DIL-Gehäuse enthält unter anderem:
- 1KByte Flash Programmspeicher
- 64 Byte EEPROM
- 32 8-Bit-Arbeitsregister (GeneralPurposeWorkingRegisters)
- einen 8-Bit-Timer/Counter mit Prescaler (Vorteiler)
- 15 I/O Lines (Port B, Port D)
- 3 Level Hardwarestack
- On-Chip RC-Oscillator
|
The AT90S1200 is a low voltage (2.7V - 6V), high performance CMOS 8-bit micro-controller, based on the AVR enhanced RISC architecture. A rich instruction set is combined with 32 general purpose working registers. Each register is connected to the ALU, allowing two independent registers to be accessed in a single instruction. This allows additions, subtractions, comparisions to be completed in a single clock cycle. The AT90S1200 is a powerful microcomputer which provides a highly flexible and cost effective solution to many embedded control applications. |
Atmel AVR-Mikrocontroller
| Device | 90S1200 | 90S2313 | 90S2323 | 90S2343 | 90S4414 | 90S4434 | 90S8515 | 90S8535 |
| Flash Memory (Bytes) | 1K | 2K | 2K | 2K | 4K | 4K | 8K | 8K |
| EEPROM (Bytes) | 64 | 128 | 128 | 128 | 256 | 256 | 512 | 512 |
| SRAM (Bytes) | No | 128 | 128 | 128 | 256 | 256 | 512 | 512 |
| SPI-Master | No | No | No | No | Yes | Yes | Yes | Yes |
| UART | No | Yes | No | No | Yes | Yes | Yes | Yes |
| Watchdog | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| RTC | No | No | No | No | No | No | No | No |
| Timer/Counter | 1 | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
| BrownOut | No | Yes | No | No | No | Yes | No | Yes |
| Comparator | 1 | 1 | No | No | 1 | 1 | 1 | 1 |
| ADC | No | No | No | No | No | 8Ch. 10Bit | No | 8Ch. 10Bit |
| Voltage | 4.0-6.0V | 4.0-6.0V | 4.0-6.0V | 4.0-6.0V | 4.0-6.0V | 4.0-6.0V | 4.0-6.0V | 4.0-6.0V |
| Low Voltage Option | Yes | Yes | Yes (LS) | Yes (LS) | Yes | Yes (LS) | Yes | Yes (LS) |
| Max Clock@VCC | 12MHz (5V) | 10MHz (5V) | 10MHz (5V) | 10MHz (5V) | 8MHz (5V) | 8MHz (5V) | 8MHz (5V) | 8MHz (5V) |
| 4MHz (3V) |
4MHz (3V) |
4MHz (3V) |
4MHz (3V) |
4MHz (3V) |
4MHz (3V) |
4MHz (3V) |
4MHz (3V) |
|
| Package | 20-SOIC | 20-SOIC | 8-SOIC | 8-SOIC | 40-PDIP | 40-PDIP | 40-PDIP | 40-PDIP |
| 20-PDIP | 20-PDIP | 8-PDIP | 8-PDIP | 44-PLCC | 44-PLCC | 44-PLCC | 44-PLCC | |
| 20-SSOP | 44-TQFP | 44-TQFP | 44-TQFP | 44-TQFP |
