사용자 설명서차례1. General Description7Pin Configurations7Product comparison8Pin Descriptions - P89LPC90112Pin Descriptions - P89LPC90214Pin Descriptions - P89LPC90315Special Function Registers16Special Function Registers Table - P89LPC90116Special Function Registers Table - P89LPC90219Special Function Registers Table - P89LPC90322Memory Organization252. Clocks27Enhanced CPU27Clock Definitions27CPU Clock (OSCCLK)27Low Speed Oscillator Option - P89LPC90127Medium Speed Oscillator Option - P89LPC90127High Speed Oscillator Option - P89LPC90127Oscillator Option Selection- P89LPC90128Clock Output - P89LPC90128On-Chip RC oscillator Option28Watchdog Oscillator Option29External Clock Input Option - P89LPC90129CPU Clock (CCLK) Wakeup Delay32CPU Clock (CCLK) Modification: DIVM Register32Low Power Select (P89LPC901)333. Interrupts35Interrupt Priority Structure35External Interrupt Inputs37External Interrupt Pin Glitch Suppression374. I/O Ports39Port Configurations39Quasi-Bidirectional Output Configuration39Open Drain Output Configuration40Input-Only Configuration41Push-Pull Output Configuration41Port 0 Analog Functions41Additional Port Features425. Timers 0 and 145Mode 046Mode 246Mode 347Mode 6 - P89LPC90147Timer Overflow toggle output - P89LPC901496. Real-Time Clock/System Timer51Real-time Clock Source51Changing RTCS1-053Real-time Clock Interrupt/Wake Up53Reset Sources Affecting the Real-time Clock537. Power Monitoring Functions55Brownout Detection55Power-On Detection56Power Reduction Modes578. UART (P89LPC903)61Mode 061Mode 161Mode 261Mode 361SFR Space62Baud Rate Generator and Selection62Updating the BRGR1 and BRGR0 SFRs62Framing Error63Break Detect63More About UART Mode 065More About UART Mode 166More About UART Modes 2 and 367Framing Error and RI in Modes 2 and 3 with SM2 = 167Break Detect67Double Buffering68Double Buffering in Different Modes68The 9th Bit (Bit 8) in Double Buffering (Modes 1, 2 and 3)69Multiprocessor Communications70Automatic Address Recognition709. Reset73Power-On reset code execution7310. Analog Comparators75Comparator Configuration75Internal Reference Voltage77Comparator Interrupt77Comparator and Power Reduction Modes78Comparator Configuration Example7811. Keypad Interrupt (KBI)7912. Watchdog Timer83Watchdog Function83Feed Sequence84Watchdog Timer in Timer Mode87Power down operation87Watchdog Clock Source87Periodic wakeup from Power down without an external oscillator8913. Additional Features91Software Reset91Dual Data Pointers9114. Flash program memory93General description93Features93Introduction to IAP-Lite93Using Flash as data storage93Accessing additional flash elements96Erase-programming additional flash elements97Reading additional flash elements97User Configuration Bytes99User Security Bytes101Boot Vector102Boot Status10215. Instruction set10316. Revision History10717. Index109크기: 865킬로바이트페이지: 114Language: English매뉴얼 열기