Описание
The PIC12C67X devices are low-cost, high-performance, CMOS, fully-static, 8-bit microcontrollers with integrated analog-to-digital (A/D) converter and EEPROM data memory.All PICmicro microcontrollers employ an advanced RISC architecture. The PIC12C67X microcontrollers have enhanced core features, eight-level deep stack, and multiple internal and external interrupt sources. The separate instruction and data buses of the Harvard architecture allow a 14-bit wide instruction word with the separate 8-bit wide data. The two stage instruction pipeline allows all instructions to execute in a single cycle, except for program branches, which require two cycles. A total of 35 instructions (reduced instruction set) are available. Additionally, a large register set gives some of the architectural innovations used to achieve a very high performance.PIC12C67X microcontrollers typically achieve a 2:1 code compression and a 4:1 speed improvement over other 8-bit microcontrollers in their class.The PIC12C67X devices have 128 bytes of RAM, 5 I/O pins and 1 input pin. In addition a timer/counter is available. Also a 4-channel, high-speed, 8-bit A/D is provided. The 8-bit resolution is ideally suited for applications requiring low-cost analog interface, (i.e., thermostat control, pressure sensing, etc.).The PIC12C67X devices have special features to reduce external components, thus reducing cost, enhancing system reliability and reducing power consumption. The Power-On Reset (POR), Power-up Timer (PWRT), and Oscillator Start-up Timer (OST) eliminate the need for external reset circuitry. There are five oscillator configurations to choose from, including INTRC precision internal oscillator mode and the power-saving LP (Low Power) oscillator mode. Power saving SLEEP mode, Watchdog Timer and code protection features improve system cost, power and reliability. The SLEEP (power-down) feature provides a power-saving mode. The user can wake-up the chip from SLEEP through several external and internal interrupts and resets.
- High-Performance RISC CPU:
- Only 35 single word instructions to learn
- All instructions are single cycle (400 ns) except for program branches which are two-cycle
- Operating speed: DC
- 10 MHz clock input DC
- 400 ns instruction cycle
- 14-bit wide instructions
- 8-bit wide data path
- Interrupt capability
- Special function hardware registers
- 8-level deep hardware stack
- Direct, indirect and relative addressing modes for data and instructions Peripheral Features:
- Four-channel, 8-bit A/D converter
- 8-bit real time clock/counter (TMR0) with 8-bit programmable prescaler
- 1,000,000 erase/write cycle EEPROM data memory
- EEPROM data retention > 40 years Special Microcontroller Features:
- In-Circuit Serial Programming (ICSP™)
- Internal 4 MHz oscillator with programmable calibration
- Selectable clockout
- 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
- Interrupt-on-pin change (GP0, GP1, GP3)
- Internal pull-ups on I/O pins (GP0, GP1, GP3)
- Internal pull-up on MCLR pin
- Selectable oscillator options:
- INTRC: Precision internal 4 MHz oscillator
- EXTRC: External low-cost RC oscillator
- XT: Standard crystal/resonator
- HS: High speed crystal/resonator
- LP: Power saving, low frequency crystal CMOS Technology:
- Low-power, high-speed CMOS EPROM/EEPROM technology
- Fully static design
- Wide operating voltage range 2.5V to 5.5V
- Commercial, Industrial and Extended temperature ranges
- Low power consumption < 2 mA @ 5V, 4 MHz 15 µA typical @ 3V, 32 kHz < 1 µA typical standby current
- Tape and Reel Packaging
