Datasheet

General Description
MC68HC908LJ12 — Rev. 2.1 Technical Data
Freescale Semiconductor General Description 35
• Serial peripheral interface module (SPI)
•IRQ external interrupt pin with integrated pullup
• 8-bit keyboard wakeup port with programmable pullup
• 32 general-purpose input/output (I/O) pins:
– High current 8-mA sink capability on PTB2–PTB5
– High current 20-mA sink capability on PTB0–PTB1
• 4/3 backplanes and static with maximum 27 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 64-kHz RC oscillator
– Low-voltage detection with optional reset or interrupt
– Illegal opcode detection with reset
– Illegal address detection with reset
• 64-pin quad flat pack (QFP), 64-pin low-profile quad flat pack
(LQFP), 52-pin low-profile quad flat pack (LQFP), and die form
• Specific features of the MC68HC908LJ12 in 52-pin LQFP are:
– 20 general-purpose I/Os only
– High current 8-mA sink capability on PTB2–PTB3 only
– 4-bit keyboard wakeup port with programmable pullup
– No serial peripheral interface module (SPI)
– No TIM2 input capture/output compare pins
– 4-channel analog-to-digital converter only