16-bit microcontrollers mc9s12dg256 overview freescale semiconductor hcs12 family of microcontrollers (mcus) is the next generation of the highly successful 68hc12 architecture. using freescale industry--eading 0.25 ? flash, the mc9s12dg256 is part of a pin-compatible family that scales from 32 kb to 512 kb of flash memory . the mc9s12dg256 provides an upward migration path from freescale 68hc08, 68hc11 and 68hc12 architectures for applications that need larger memory, more peripherals and higher performance. also, with the increasing number of can-based electronic control units (ecus), its multiple network modules support this environment by enabling highly efficient communications between different network buses. target applications > automotive applications > industrial control features benefits h igh-performance 16-bit hcs12 cpu core > 25 mhz bus operation at 5v for 40 ns minimum instruction cycle time > opcode compatible with the 68hc11 and 68hc12 > c-optimized architecture produces extremely compact code on-chip debug interface > dedicated serial debug interface > on-chip breakpoints > real-time in-circuit emulation and debug without expensive and cumbersome box emulators > read/write memory and registers while running a t full speed network modules integrated third-generation flash memory 4 kb integrated eeprom > flexible protection scheme for protection against accidental program or erase > eeprom can be programmed in 46 ? > can erase 4 bytes at a time and program 2 bytes at a time for calibration, security, personality and diagnostic information > two mscan modules implementing the can 2.0 a/b protocol ? five receive buffers per module with fifo storage scheme ? three transmit buffers per module with internal prioritization > ability to link modules for higher buffer count > programmable bit rate up to 1 mbps > fifo receive approach superior for event-driven networks > in-application reprogrammable > self-timed, fast programming ? fast flash page erase0 ms (512 bytes) ? can program 16 bits in 20 ? while in burst mode > 5v flash program/erase/read > flash granularity12 byte flash erase/2 byte flash program > four independently programmable flash arrays > flexible block protection and security > flexibility to change code in the field > efficient end-of-line programming > total program time for 256 kb code is less than 10 seconds > reduces production programming cost through ultra-fast programming > no external high voltage or charge pump required > virtual eeprom implementation, flash array usable for ee extension > can erase one array while executing code from another 2 x sci 3 x spi 2 x can 2.0 a/b pwm 8-bit, 8 ch./1 6-bit , 4- ch. i n t e r n a l b u s hcs12 cpu 16-key wake-up irq ports vreg 5v to 2. 5v enhan ced cap tur e ti mer 16-bit , 8-ch. atd0 10-bit , 8-ch. 12 kb r am 256 k b flash 4 kb e epr om atd1 10-bit , 8-ch. i 2 c
cost-effective development tools for more information on development tools, please refer to the freescale development tool selector guide (sg1011). m68kit912dp256 evaluation kit for development and $495* evaluation of hcs12 application code that includes the m68evb912dp256 and usbmul tilinkbdm m68c yclonepro hc08/hcs08/hc12/hcs12 $499* stand-alone flash programmer or in-circuit emulator, debugger, flash programmer; usb, serial or etherne t interface options usbmul tilinkbdm universal hcs08/hcs12 in-circuit $99* emulator, debugger, and flash programmer; usb pc interface cwx-h12-se codewarrior? special edition for free* hcs12 mcus; includes integrated development environment (ide), linker, debugger, unlimited assembler, processor expert? auto-code generator, full-chip simulation and limited c compiler *price indicated is msrp. freescale? and the freescale logo are trademarks of freescale semiconductor, inc. all other product or service names are the property of their respective owners. this product incorporates superflash ? technology licensed from sst . ?freescale semiconductor, inc. 2005 document number: mc9s12dg256fs rev 2 learn more: for more information about freescale products, please visit www.freescale.com . features benefits 1 0-bit analog-to-digital converter (adc) clock generation module with phase-lock loop (pll) > clock monitor with self clock mode in case of no external clock > programmable clock frequency with 1024 o ptions ranging from divide by 16 to multiply by 64 from base oscillator > real-time interrupt > watchdog > reliable, robust operation > provides high performance using low-cost reference crystals > reduces generated noise > reduces power consumption > easily able to implement real-time clock enhanced capture timer > 8-channel, 16-bit with input capture, output compare and pulse accumulator > 16-bit modulus down counter > flexible, programmable timer system 8 -bit or 16-bit pulse-wide modulation (pwm) > 8-channel, 8-bit or 4-channel, 16-bit pwm > pwm supports center aligned operation > efficiently implement motor control, battery charging or digital-to-analog functions t wo serial communications interfaces > 8192 prescaler option > asynchronous communication between the mcu and a terminal, computer or a network of mcus > exact baud rate matching three serial peripheral interfaces > up to 6.25 mbps > high-speed synchronous communication between multiple mcus or between mcu and serial peripherals d ata sheets 9s12dp256bdgv1 mc9s12dp256 device guide s 12dp256pimv2 mc9s12dp256 port integration module block guide s12bdmv4 hcs12 background debug (bdm) b lock guide s12bkvd1 hcs12 breakpoint (bkp) block guide s12cpuv2 hcs12 cpu reference manual s12mscanv2 hcs12 motorola scalable controller area network block guide s 12atd10b8cv2 hcs12 10-bit 8-channel analog to digital block guide s12crgv3 hcs12 clock reset generator b lock guide s12ect16b8cv1 hcs12 16-bit 8-channel enhanced capture timer block guide s12eets4kv2 hcs12 4k eeprom block guide s12fts256kv2 hcs12 256k flash block guide s 12iicv2 hcs12 i 2 c block guide s12intv1 hcs12 interrupt (int) block guide s12mebiv3 hcs12 multiplexed external bus interface (mebi) block guide s12mmcv4 hcs12 module mapping control (mmc) block guide s12pwm8b8cv1 hcs12 8-bit 8-channel pulse-width modulator block guide S12SCIV2 hcs12 serial communications i nterface block guide s12spiv2 hcs12 serial peripheral interface block guide s12vregv1 hcs12 v oltage regulator block guide package options part number package temp. range mc9s12dg256bcfu 80 qfp -40 to +85? mc9s12dg256bvfu 80 qfp -40 to +105? mc9s12dg256bmfu 80 qfp -40 to +125? mc9s12dg256bcpv 112 lqfp -40 to +85? mc9s12dg256bvpv 112 lqfp -40 to +105? mc9s12dg256bmpv 112 lqfp -40 to +125? 80-lead qfp 112-lead lqfp application notes and engineering bulletins an2206 security and protection on the hcs12 family an2213 using cosmic software m68hc12 compiler for mc9s12dp256 an2216 mc9s12dp256 software development using metrowerks codewarrior? an2250 audio reproduction on hcs12 microcontrollers eb386 hcs12 d-family compatibility inter ic (i 2 c) bus > 256 clock rate options > provides a simple, efficient method of data exchange between devices > minimizes the need for large numbers of connections between devices and eliminates the need for an address decoder > two 8-channel adc > 7 ?, 10--it single conversion time, scan mode available > fast, easy conversion from analog inputs like position sensors, analog meters and photovoltaic cells to digital values for c pu processing > can effectively have 3.5 ? conversion time by sampling same signal with both adcs up to 91 input/output (i/o) lines > programmable pull-ups/pull-downs > dual drive capability > reduce system cost > able to tailor application for minimum emc or high current loads
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