MC908QY8CDWE Datasheet, PDF (20/232 Pages) Freescale Semiconductor, Inc – Addendum to MC68HC908QB8, rev. 3

General Description
• On-chip random-access memory (RAM)
• Enhanced serial communications interface (ESCI) module
• Serial peripheral interface (SPI) module
• 4-channel, 16-bit timer interface (TIM) module
• 10-channel, 10-bit analog-to-digital converter (ADC) with internal bandgap reference channel
(ADC10)
• Up to 13 bidirectional input/output (I/O) lines and one input only:
– Six shared with KBI
– Ten shared with ADC
– Four shared with TIM
– Two shared with ESCI
– Four shared with SPI
– One input only shared with IRQ
– High current sink/source capability on all port pins
– Selectable pullups on all ports, selectable on an individual bit basis
– Three-state ability on all port pins
• 6-bit keyboard interrupt with wakeup feature (KBI)
– Programmable for rising/falling or high/low level detect
• Low-voltage inhibit (LVI) module features:
– Software selectable trip point
• System protection features:
– Computer operating properly (COP) watchdog
– Low-voltage detection with reset
– Illegal opcode detection with reset
– Illegal address detection with reset
• External asynchronous interrupt pin with internal pullup (IRQ) shared with general-purpose input
pin
• Master asynchronous reset pin with internal pullup (RST) shared with general-purpose input/output
(I/O) pin
• Memory mapped I/O registers
• Power saving stop and wait modes
• MC68HC908QB8, MC68HC908QB4 and MC68HC908QY8 are available in these packages:
– 16-pin plastic dual in-line package (PDIP)
– 16-pin small outline integrated circuit (SOIC) package
– 16-pin thin shrink small outline packages (TSSOP)
Features of the CPU08 include the following:
• Enhanced HC05 programming model
• Extensive loop control functions
• 16 addressing modes (eight more than the HC05)
• 16-bit index register and stack pointer
• Memory-to-memory data transfers
• Fast 8 × 8 multiply instruction
• Fast 16/8 divide instruction
• Binary-coded decimal (BCD) instructions
• Optimization for controller applications
• Efficient C language support
MC68HC908QB8 Data Sheet, Rev. 3
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Freescale Semiconductor