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PIC18C252芯片主要特點：
High Perbance 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:http://www.acoaj.cn PCB抄板
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– DC - 40 MHz osc/clock b
– 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 b: 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 b multiplexor
– Conversion available during SLEEP
– DNL = ±1 LSb, INL = ±1 LSb
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