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标题: PIC16C781 Datasheet [打印本页]

作者: enroo_ma 时间: 2009-8-21 15:53
标题: PIC16C781 Datasheet

PIC16C781/2 Datasheet (4/1/2003)

Microcontroller Core Features:
• High performance RISC CPU
• Only 35 single word instructions to learn
• All single cycle instructions except for program
branches which are two cycle
• Direct, indirect and relative addressing modes
- Operating speed: DC - 20 MHz clock input
DC - 200 ns instruction cycle
8-level deep hardware stack
• Interrupt capability (up to 8 internal/external
interrupt sources)
• 16 I/O pins:
- Individual direction control (13 pins)
- Input only (3 pins), low leakage (2 pins)
- Digital/Analog inputs (8 pins)
• Programmable PORTB interrupt-on-change (8 pins)
• Programmable PORTB weak pull-ups (8 pins)
• Power-on Reset (POR)
• Power-up Timer (PWRT) and
Oscillator Start-up Timer (OST)
• Watchdog Timer (WDT) with a software enabled
option and its own on-chip RC oscillator for
reliable operation
• Programmable Brown-out Reset (BOR)
• Programmable Low Voltage Detection (LVD)
• Internal/external MCLR
• Programmable code protection
• Power saving SLEEP mode
• Selectable oscillator options:
HS, XT, LP, EC, RC, INTRC (4 MHz/37 kHz)
• In-Circuit Serial Programming™ (ISCP™)
• Program Memory Read (PMR) capability
• Four user programmable ID locations
• Wide operating voltage range:
- 2.5V to 5.5V for commercial and industrial
temperature ranges
- Extended temperature range available
Microcontroller Core Features (Continued):
• Low power, high speed CMOS EPROM
technology
• Fully static design
• Low power consumption:
- < 2mA @ 5V, 4MHz
-< 1 µA typical standby current.
Peripheral Features:
• Timer0: 8-bit timer/counter with 8-bit prescaler
• Enhanced Timer1:
- 16-bit timer/counter with prescaler
- External Gate Input mode
- Option to use OSC1 and OSC2 in LP mode
as Timer1 oscillator, if INTRC oscillator mode
selected
• Analog-to-Digital Converter (ADC):
- 8-bit resolution
- Programmable 8-channel input
- Internal voltages available for self-
diagnostics
• Digital-to-Analog Converter (DAC):
- 8-bit resolution
- Reference from AVDD, VREF1, or VR module
- Output configurable to VDAC pin, Compara-
tors, and ADC reference
• Operational Amplifier module (OPA):
- Firmware initiated input offset voltage Auto
Calibration module
- Low leakage inputs
- Programmable Gain Bandwidth Product
(GBWP)
Dual Analog Comparator module with:
- Individual enable and interrupt bits
- Programmable speed and output polarity
- Fully configurable inputs and outputs
- Reference from DAC, or VREF1/VREF2
- Low input offset voltage.
• VR voltage reference module:
- 3.072V +/- 0.7% @25°C, AVDD = 5V
- Configurable output to ADC reference, DAC
reference, and VR pin
- 5 mA sink/source
• Programmable Switch Mode Controller module:
- PWM and PSM modes
- Programmable switching frequency
- Configurable for either single or dual
feedback inputs
- Configurable single or dual outputs
- Slope compensation output available in
single output mode

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