MC68HC908LJ24 General Description
MC68HC908LJ24 Maximum Ratings
MC68HC908LJ24 Features
•Features of the MC68HC908LJ24 include the following:
• High-performance M68HC08 architecture
• Fully upward-compatible object code with M6805, M146805, and M68HC05 Families
8-MHz at 5V operating voltage
4-MHz at 3.3V operating voltage
• 32.768kHz crystal oscillator clock input with 32MHz internal PLL
• Optional continuous crystal oscillator operation in stop mode
• 24K-bytes user program FLASH memory with security1 feature
• 768 bytes of on-chip RAM
• Up to 48 general-purpose input/output (I/O) pins:
High current 15mA sink capability on 30 pins
• Two 16-bit, 2-channel timer interface modules (TIM1 and TIM2) with selectable input capture, output compare, PWM capability on each channel, and external clock input option (T1CLK and T2CLK)
• Real time clock (RTC) with:
Clock, calendar, alarm, and chronograph functions
Selectable periodic interrupt requests for seconds, minutes, hours, days, 2-Hz, 4-Hz, 8-Hz, 16-Hz, and 128-Hz
Temperature drift compensation by user software and external temperature sensor with temperature drift profile from crystal vendor
• Serial communications interface module (SCI) with infrared (IR) encoder/decoder
• Inter-IC Bus interface module (IIC)
• Serial peripheral interface module (SPI)
• IRQ external interrupt pin with integrated pullup
• 8-bit keyboard wakeup port with programmable pullup
• 4/3 backplanes and static with maximum 32/33 frontplanes liquid crystal display (LCD) driver
• 6-channel, 10-bit successive approximation analog-to-digital converter (ADC)
• Resident routines for in-circuit programming and EEPROM emulation
• Low-power design (fully static with stop and wait modes)
• Master reset pin (with integrated pullup) and power-on reset
• Spike filter protection for EMC performance enhancement
• System protection features
Optional computer operating properly (COP) reset, driven by internal RC oscillator
Low-voltage detection with optional reset or interrupt
Illegal opcode detection with reset
Illegal address detection with reset
• 80-pin quad flat pack (QFP), 80-pin low-profile quad flat pack (LQFP), 64-pin quad flat pack (QFP), and 64-pin low-profile quad flat pack (LQFP)
MC68HC908LJ24 Connection Diagram
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