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PIC18C252芯片技术解密

时间:2011-01-19 09:24:04

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PIC18C252芯片主要特点:
High Performance RISC CPU:
·77 instructions
·C-Language friendly architecture
·PIC16 source code compatible
·Linear program memory addressing to 2 Mbyte
·Linear data memory addressing up to 4 Kbytes
·Up to 10 MIPs operation:
– DC - 40 MHz osc/clock input
– 4 MHz - 10 MHz clock with PLL active
·16-bit wide instructions, 8-bit wide data path
·Priority levels for interrupts
·8 x 8 Single Cycle Hardware Multiplier
Peripheral Features:
·High current sink/source 25 mA/25 mA
·Up to four external interrupt pins
·Up to three 16-bit timer/counters
·Up to two 8-bit timer/counters with 8-bit period register (time-base for PWM)
·Secondary LP oscillator clock option - Timer1
·Up to five Capture/Compare/PWM (CCP) modules
CCP pins can be configured as:
– Capture input: 16-bit, resolution 6.25 ns (TCY/16)
– Compare: 16-bit, max. resolution 100 ns (TCY)
– PWM output: PWM resolution is 1- to 10-bit
Max. PWM frequency @: 8-bit resolution = 156 kHz
10-bit resolution = 39 kHz
·Master Synchronous Serial Port (MSSP) module
Two modes of operation:
– 3-wire SPITM (supports all 4 SPI modes)
– I2CTM Master and Slave mode
·Up to 2 Addressable USART modules (ESCI)
– Supports interrupt on Address bit
·Parallel Slave Port (PSP) module
Analog Features:
·10-bit Analog-to-Digital Converter module (A/D) with:
– Fast sampling rate
– Up to 16 channels input multiplexor
– Conversion available during SLEEP
– DNL = ±1 LSb, INL = ±1 LSb
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