?appliance compressors ?smart appliances ?industrial compressors (hvac) ?variable speed pumps (well, gas) ?hvac blowers and fans ?general purpose drives ?exercise equipment ?electric powered recreational vehicles ?medical scanners/pumps ?printers/scanners/fax ?electric lawn equipment ?throttle control ?seat module control ?uninterruptible power supplies t arget applications a flash mcu solution 68hc908mr8 8-bit microcontroller the 68hc908mr8 improves design capabilities for 3-phase, variable speed motion control. each device incorporates the fault tolerant and flexible 6-channel, 12-bit pulse width modulator, supporting center and edge-aligned modes with automatic dead-time insertion and patented dead-time compensation capability. the 68hc908mr8 is designed to save money and space, and includes powerful features like 8k of flash memory, a 10-bit analog-to-digital converter (adc), an asynchronous serial communications interface (sci) and small outline packages. cpu08 256/192 ram 8k flash 4k rom mon sim irq cop lvi brk cgma 6-channel/ 12-bit pwmmc 7-channel/ 10-bit adc tima port a port c port b timb sci 7 2 7 high-performance 68hc08 cpu core integrated second generation flash memory 10-bit analog-to-digital converter 12-bit pulse width modulation for motor control in-application re-programmable extremely fast programming, encoding 64 bytes in as fast as 2 msec flash programming across the 68hc08 s full operating supply voltage with no extra programming voltage 10k write/erase cycles minimum over temperature flexible block protection and security cost-effective programming changes and field software upgrades via in-application programmability and re-programmability reduces production programming costs through ultra-fast programming byte-writable for data as well as program memory protects code from unauthorized reading and to guard against unintentional erasing/writing of user-programmable segments of code ? channels single conversion in 17 ?ec provides single or continuous conversion generates an interrupt when input signal exceeds a software programmable limit ? complementary or 6 independent pwm signals programmable output polarity edge- or center-aligned waveforms automatic dead-time generation/compensation ? 0 ma sink on all pwmmc pins programmable fault detection provides multiple motor or multi-phase control capability reduces system cost through integration of digital/analog circuitry drastically reduces system-noise and improves efficiency of the drive without the need for external current sensors with patented dead-time compensation allows direct drive of the opto-coupling stage guarantees immediate shutdown of the pwm outputs ensuring motor and consumer safety clock generation module with pll programmable clock frequency in integer multiples of external crystal reference crystal reference of 1 mhz to 8 mhz external clock option with or without pll provides high performance using low-cost, low-frequency reference crystals reduces generated noise while still providing high performance (up to 32 mhz internal clock) four programmable 16-bit timer channels 125 nsec resolution at 8 mhz bus external clock input pin free-running counter or modulo up-counter configurable for input capture, output compare, or unbuffered pwm pairing timer channels provides a buffered pwm function features benefits ? mhz bus operation at 5v operation for 125 nsec minimum instruction cycle time efficient instruction set including multiply and divide 16 flexible addressing modes including stack relative with 16-bit stack pointer fully static low-voltage, low-power design with wait and stop modes object code compatible with the 68hc05 easy to learn and use architecture ? optimized architecture provides compact code f r e e s c a l e s e m i c o n d u c t o r , i freescale semiconductor, inc. f o r m o r e i n f o r m a t i o n o n t h i s p r o d u c t , g o t o : w w w . f r e e s c a l e . c o m n c . . .
motorola and the stylized m logo are registered in the u.s. patent and trademark office. all other product or service names are the property of their respective owners. ? motorola, inc. 2002 68hc908mr8/4pb/d rev. 1 resale p ackage options a flash mcu solution 68hc908mr8 * all prices are manufacturer s suggested resale for north america. individual development tool components easy-to-order development tool kits p art number description m68ics08mr 68hc908mrxx programmer/ $295 in-circuit debug kit kitmmevs08mr8 cost-effective real-time $1450 in-circuit emulator kit kitmmds08mr8 high-performance real-time $3950 in-circuit emulator kit m68mmds0508 high-performance emulator $2950 m68mmpfb0508 mmevs platform board $395 m68em08mr8 emulation module daughter board $495 m68cbl05c low-noise flex cable $120 m68tc08mr8p28 28-pin dip/soic target head $250 adapter m68tc08mr8fa32 32-pin qfp target head adapter $250 m68tqs032sag1 32-pin tq socket with guides $50 m68tqp032sa1 32-pin tqpack $70 m68dip28soic 28-pin soic surface mount $50 adapter resale* provides system protection in the event of runaway code by resetting the mcu to a known state computer operating properly watchdog timer improves reliability by resetting the mcu when voltage drops below trip point integration reduces system cost low-voltage inhibit 10 ma sink/source capability on all i/o pins 15 ma sink capability on five i/o pins keyboard scan with selectable interrupts on five i/o pins software programmable pullups on five i/o pins high-current i/o allows direct drive of led and other circuits to eliminate external drivers and reduce system costs keyboard scan with programmable pullups eliminates external glue logic when interfacing to simple keypads up to 14 bidirectional input/output (i/o) lines features benefits serial communications interface uart asynchronous communications system flexible baud rate generator double buffered transmit and receive optional hardware parity checking and generation asynchronous communication between the mcu and a terminal, computer or a network of microcontrollers an1857/d a 3-phase ac induction motor control system an2093/d creating efficient c code for the mc68hc08 an1219/d m68hc08 integer math routines an1218/d hc05 to hc08 optimization an1837/d non-volatile memory technology review an1752/d data structures for 8-bit mcus an1705/d noise reduction techniques for mcu-based systems an1259/d system design and layout techniques for noise reduction in mcu-based systems an1263/d designing for electromagnetic compatibility with single-chip microcontrollers an1050/d designing for electromagnetic compatibility (emc) with hcmos microcontrollers an1705/d noise reduction techniques for microcontroller- based systems and many more?ee our web site at http://www.motorola.com/mcu application notes p art number package temperature range mc68hc908mr8cfa 32 qfp -40 to 85? mc68hc908mr8cp 28 dip -40 to 85? mc68hc908mr8cdw 28 soic -40 to 85? mc68hc908mr8vfa 32 qfp -40 to 105? mc68hc908mr8vp 28 dip -40 to 105? mc68hc908mr8vdw 28 soic -40 to 105? sample packs p ackage temperature range kmc68hc908mr8cfa 32 qfp -40 to 85? kmc68hc908mr8cp 28 dip -40 to 85? kmc68hc908mr8cdw 28 soic -40 to 85? f r e e s c a l e s e m i c o n d u c t o r , i freescale semiconductor, inc. f o r m o r e i n f o r m a t i o n o n t h i s p r o d u c t , g o t o : w w w . f r e e s c a l e . c o m n c . . .
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