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PIC24FJファミリーの概要

High-Performance CPU:

・ Modified Harvard Architecture

・ Up to 16 MIPS Operation @ 32 MHz  すごい周波数です

・ 8 MHz Internal Oscillator with 4x PLL Option and Multiple Divide Options

・ 17-Bit by 17-Bit Single-Cycle Hardware Multiplier  ハードウエア乗算器

・ 32-Bit by 16-Bit Hardware Divider  ハードウエア除算器

・ 16-Bit x 16-Bit Working Register Array

・ C Compiler Optimized Instruction Set Architecture:

- 76 base instructions

- Flexible addressing modes

・ Two Address Generation Units for Separate Read and Write Addressing of Data Memory　これは何？

Special Microcontroller Features:

・ Operating Voltage Range of 2.0V to 3.6V  低電圧（５Vも対応して欲しかった）

・ 5.5V Tolerant Input (digital pins only)  IOは５．５Vも対応している

・ High-Current Sink/Source (18 mA/18 mA) on All I/O Pins

・ Flash Program Memory:

- 10,000 erase/write　ライターで１００００回書き込みができる

- 20-year data retention minimum  ２０年データを保持

・ Power Management modes:

- Sleep, Idle, Doze and Alternate Clock modes

- Operating current 650 μA/MIPS typical at 2.0V

- Sleep current 150 nA typical at 2.0V

・ Fail-Safe Clock Monitor Operation:

- Detects clock failure and switches to on-chip, low-power RC oscillator

・ On-Chip, 2.5V Regulator with Tracking mode

・ Power-on Reset (POR), Power-up Timer (PWRT) and Oscillator Start-up Timer (OST)

・ Flexible Watchdog Timer (WDT) with On-Chip, Low-Power RC Oscillator for Reliable Operation

・ In-Circuit Serial Programming? (ICSP?) and In-Circuit Debug (ICD) via 2 Pins  AVRでいうISP

・ JTAG Boundary Scan and Programming Support

Analog Features:

・ 10-Bit, up to 13-Channel Analog-to-Digital Converter:　１０ビットA/Dが１３ｃｈも

- 500 ksps conversion rate  500Kサンプル/秒ということ？

- Conversion available during Sleep and Idle

・ Dual Analog Comparators with Programmable Input/Output Configuration

Peripheral Features:

・ Peripheral Pin Select:

- Allows independent I/O mapping of many peripherals

- Up to 26 available pins (44-pin devices)

- Continuous hardware integrity checking and safety interlocks prevent unintentional configuration changes

・ 8-Bit Parallel Master/Slave Port (PMP/PSP):

- Up to 16-bit multiplexed addressing, with up to 11 dedicated address pins on 44-pin devices

- Programmable polarity on control lines

・ Hardware Real-Time Clock/Calendar (RTCC):  RTC内蔵

- Provides clock, calendar and alarm functions

・ Programmable Cyclic Redundancy Check (CRC)  UART等のチェックでCRCが使える？

・ Two 3-Wire/4-Wire SPI modules (support 4 Frame modes) with 8-Level FIFO Buffer

・ Two I2C? modules support Multi-Master/Slave mode and 7-Bit/10-Bit Addressing

・ Two UART modules:  ２ｃｈ使えると何かと便利です

- Supports RS-485, RS-232, and LIN 1.2  RS485とは差動通信で最大32台までの複数対複数接続！

- On-chip hardware encoder/decoder for IrDAR  赤外線データエンコード・デコードがハードウエアで実現

- Auto-wake-up on Start bit

- Auto-Baud Detect

- 4-level deep FIFO buffer

・ Five 16-Bit Timers/Counters with Programmable Prescaler

・ Five 16-Bit Capture Inputs

・ Five 16-Bit Compare/PWM Outputs

・ Configurable Open-Drain Outputs on Digital I/O Pins   オープンドレイン出力

・ Up to 4 External Interrupt Sources