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da9012.001 25 august 2004 1 (12) MAS9012 stepper motor driver ic ? supports microstepping movement ? capable to drive one to four motors ? low operating voltage description MAS9012 is a miniature stepper motor driver ic with four different versions to drive one to four motors of pointers in motorcycle and car dashboards and other similar applications. it features a microstepping function to allow smooth movement of the motor shaft. one microstep corresponds to an angular rotation of 1/12 degree of the motor shaft. the actual precision of the position is affected by the gear play of the motor. the microstepping movement of the motor shaft is achieved by converting a pulse sequence into a current level sequence sent to the stepper motor coils. features applications ? bipolar stepper motor driver outputs ? drives one to four stepper motors ? microstepping function ? glitch filters at all inputs ? low operating voltage ? tssop-16 and tssop-28 packages ? motorcycle dashboards ? car dashboards ? nautical instrumentation ? miniature stepper motors in appliances
da9012.001 25 august 2004 2 (12) block diagrams glitch filter output driver a glitch filter fscx cw vss vdd xreset outa1 outa2 outa3 outa4 glitch filter MAS9012a1 glitch filter output driver a glitch filter fscxa cwa glitch filter output driver b glitch filter fscxb cwb vss vdd xreset outa1 outa2 outa3 outa4 outb1 outb2 outb3 outb4 glitch filter MAS9012a2 figure 1. block diagrams of single and dual output st epper motor driver ics MAS9012a1 and MAS9012a2 glitch filter output driver a glitch filter fscxa cwa glitch filter output driver b glitch filter fscxb cwb glitch filter output driver c glitch filter fscxc cwc vss vdd xreset outa1 outa2 outa3 outa4 outb1 outb2 outb3 outb4 outc1 outc2 outc3 outc4 glitch filter MAS9012a3 glitch filter output driver a glitch filter fscxa cwa glitch filter output driver b glitch filter fscxb cwb glitch filter output driver c glitch filter fscxc cwc glitch filter output driver d glitch filter fscxd cwd vss vdd xreset outa1 outa2 outa3 outa4 outb1 outb2 outb3 outb4 outc1 outc2 outc3 outc4 outd1 outd2 outd3 outd4 glitch filter MAS9012a4 figure 2. block diagrams of triple and quad output st epper motor driver ics MAS9012a3 and MAS9012a4
da9012.001 25 august 2004 3 (12) operation description MAS9012 is a stepper motor driver ic specifically designed to drive bipolar stepper motors of pointers in a car and motorcycle dashboard and in the other similar applications. it has four different device versions: a1, a2, a3 and a4 with single, dual, triple and quad stepper motor driver outputs respectively (see block diagrams on page 2). the ic is operated from single 5v supply. each stepper motor output is controlled by two digital control signal inputs, fscx and cw. each rising edge of fscx stepping clo ck input causes stepper motor to step one microstep (1/12 degree) ahead. rotation direction is determined by cw rotation direction selection signal. high cw selects clockwise direction and low cw selects counterclockwise direction. each stepper motor has its own fscx and cw signal inputs. the device has common xreset master reset control input for resetting stepper motor outputs to initial state. xreset is active low. each digital input has a glitch filter for eliminating effects of electrical disturbances at the control inputs. it is recommended to keep xreset signal low (active) during power up until the supply voltage vdd has risen up.
da9012.001 25 august 2004 4 (12) absolute maximum ratings all voltages with respect to ground parameter symbol conditions min max unit supply voltage v in -0.3 6 v voltage range for all pins -0.3 v in + 0.3 v esd rating hbm 2 kv junction temperature t jmax +175 (limited) c storage temperature t s -55 +150 c stresses beyond those listed may cause permanent damage to the dev ice. the device may not operat e under these conditions, but i t will not be destroyed. recommended operating conditions parameter symbol conditions min typ max unit operating supply voltage v dd 4.5 5.0 5.5 v operating junction temperature t j -40 +125 c operating ambient temperature t a -40 +85 c electrical characteristics load characteristics parameter symbol conditions min typ max unit coil resistance r coil t a = 25c 290 ohm phase inductance l coil t a = 25c 0.4 h current parameters t a = -40c to +85c, typical values at t a = +25c, r coil = 290 ? , v dd = 5.0 v, unless otherwise specified parameter symbol conditions min typ max unit quiescent current i cc all inputs at vdd or vss, no load (quad output driver version) 300 a typical supply current consumption i c quad output driver version 76 ma output drive capability i out for each output pin 29 ma
da9012.001 25 august 2004 5 (12) electrical characteristics... digital inputs t a = -40c to +85c, typical values at t a = +25c, vdd=5.0 v, unless otherwise specified parameter symbol conditions min typ max unit input high voltage v ih vdd = 4.5?5.5v 80% vdd 100% vdd v input low voltage v il vdd = 4.5?5.5v 0% vdd 20% vdd v input frequency f in 15 khz ? power dissipation t a = -40c to +85c, typical values at t a = +25c, vdd=5.0 v, unless otherwise specified parameter symbol conditions min typ max unit junction to ambient thermal resistance r ja typical pc board mounting, still air, tssop package 100.4 c/w maximum power dissipation p d any ambient temperature, tssop package ja a (max) j max d r t t p ? = w note 1 note 1 : t j(max) denotes maximum operating junc tion temperature (+125c), t a ambient temperature, and r ja junction-to-air thermal resistance (+144c/w). ? timing characteristics t a = -40c to +85c, vdd = 5.0 v, unless otherwise specified parameter symbol conditions min typ max unit signal pulse width high or low ns signal pulse width t w high or low 450 ns setup time to f(scx) t s high or low 100 ns xreset release time to f(scx) t rr 100 ns ? delay timing waveforms t w fscx t s fscx t rr
da9012.001 25 august 2004 6 (12) application information glitch filter output driver a glitch filter fscxa cwa glitch filter output driver b glitch filter fscxb cwb glitch filter output driver c glitch filter fscxc cwc glitch filter output driver d glitch filter fscxd cwd vss vdd xreset gnd gnd vcc outa1 outa2 outa3 outa4 outb1 outb2 outb3 outb4 outc1 outc2 outc3 outc4 outd1 outd2 outd3 outd4 vdd vcc vss gnd c glitch filter 100nf 22 f + gnd stepper motor stepper motor stepper motor stepper motor MAS9012a4 10 k ? figure 3. typical MAS9012a4 quad stepper moto r driver application circuit the supply voltages of MAS9012 can be decoupled with parallel connection of 22 f and 100 nf decoupling capacitors (see figure 3).
da9012.001 25 august 2004 7 (12) MAS9012a1 single output driver pin configuration in plastic tssop-16 nc nc xreset cw fscx vss nc nc vdd nc nc outa3 outa4 outa2 outa1 nc 9012a1 yyww top marking definitions: yyww = year week pin description pin name pin type function 1 nc 2 nc xreset 3 di master reset, active low cw 4 di rotation direction selection, high = clockwise, low = counterclockwise fscx 5 di stepping clock input vss 6 g power supply ground 7 nc 8 nc 9 nc outa1 10 ao stepper motor driver a coil output 1 outa2 11 ao stepper motor driver a coil output 2 outa4 12 ao stepper motor driver a coil output 4 outa3 13 ao stepper motor driver a coil output 3 vdd 14 p positive power supply 15 nc 16 nc a = analog, d = digital, p = power, g = ground, i = input, o = output, nc = not connected
da9012.001 25 august 2004 8 (12) MAS9012a2 dual output driver pin co nfiguration in plastic tssop-16 outb3 nc outb4 outb2 outb1 cwb fscxb xreset outa4 vdd outa3 outa2 outa1 cwa fscxa vss 9012a2 yyww top marking definitions: yyww = year week pin description pin name pin type function 1 nc outb3 2 ao stepper motor driver b coil output 3 outb4 3 ao stepper motor driver b coil output 4 outb2 4 ao stepper motor driver b coil output 2 outb1 5 ao stepper motor driver b coil output 1 cwb 6 di rotation direction selection b, high = clockwise, low = counterclockwise fscxb 7 di stepping clock input b xreset 8 di master reset, active low vss 9 g power supply ground fscaxa 10 di stepping clock input a cwa 11 di rotation direction selection a, high = clockwise, low = counterclockwise outa1 12 ao stepper motor driver a coil output 1 outa2 13 ao stepper motor driver a coil output 2 outa4 14 ao stepper motor driver a coil output 4 outa3 15 ao stepper motor driver a coil output 3 vdd 16 p positive power supply a = analog, d = digital, p = power, g = ground, i = input, o = output, nc = not connected
da9012.001 25 august 2004 9 (12) package (tssop16) outlines dimension min max unit a 6.40 bsc mm b 4.30 4.50 mm c 5.00 bsc mm d 0.05 0.15 mm e 1.10 mm f 0.19 0.30 mm g 0.65 bsc mm h 0.18 0.28 mm i 0.09 0.20 mm i1 0.09 0.16 mm j 0.19 0.30 mm j1 0.19 0.25 mm k 0 8 l 0.24 0.26 mm m (the length of a terminal for soldering to a substrate) 0.50 0.75 mm n 1.00 ref mm o 12 p 12 dimensions do not include mold flash, protrusions, or gate burrs. all dimensions are in accordance with jedec standard mo-153. b a c pin 1 d seating plane e h g f b b detail a l k m n p o detail a ii1 j j1 section b-b
da9012.001 25 august 2004 10 (12) soldering information resistance to soldering heat according to rsh test iec 68-2-58/20 2*220 c maximum temperature 240 c maximum number of reflow cycles 3 reflow profile thermal profile param eters stated in jesd22-a113 should not be exceeded. http://www.jedec.org seating plane co-planarity max 0.08 mm lead finish solder plate 7.62 - 25.4 m, material sn 85% pb 15% embossed tape specifications (tssop16) dimension min max unit a 0 6.50 6.70 mm b 0 5.20 5.40 mm d 0 1.50 +0.10 / -0.00 mm d 1 1.50 mm e 1 1.65 1.85 mm f 1 7.20 7.30 mm k 0 1.20 1.40 mm p 11.90 12.10 mm p 0 4.0 mm p 2 1.95 2.05 mm s 1 0.6 mm t 0.25 0.35 mm w 11.70 12.30 mm p 0 p p 2 a 0 d 1 d 0 a a section a - a e 1 f 1 w tape feed direction b 0 t k 0 s 1 tape feed direction pin 1 designator
da9012.001 25 august 2004 11 (12) reel specifications (tssop16) dimension min max unit a 330 mm b 1.5 mm c 12.80 13.50 mm d 20.2 mm n 50 mm w 1 (measured at hub) 12.4 14.4 mm w 2 (measured at hub) 18.4 mm trailer 160 mm leader 390, of which minimum 160 mm of empty carrier tape sealed with cover tape mm weight 1500 g d a b c n w 1 w 2 tape slot for tape start components trailer leader carrier tape cover tape start end 2000 components on each reel reel material: conductive, plastic antistatic or static dissipative carrier tape material: conductive cover ta p e material: static dissi p ative
da9012.001 25 august 2004 12 (12) ordering information product code product package comments MAS9012a1ua06 single output stepper motor driv er ic tssop-16 tape and reel, 2000 pcs/reel MAS9012a2ua06 dual output stepper motor driv er ic tssop-16 tape and reel, 2000 pcs/reel MAS9012a3ua06 triple output stepper mo tor driver ic tssop-24 tape and reel MAS9012a4ua06 quad output stepper motor driver ic tssop-28 tape and reel local distributor micro analog systems oy contacts micro analog systems oy kamreerintie 2, p.o. box 51 fin-02771 espoo, finland tel. +358 9 80 521 fax +358 9 805 3213 http://www.mas-oy.com notice micro analog systems oy reserves the right to make changes to the products contained in this data sheet in order to improve the design or performance and to supply the best possible pr oducts. micro analog systems oy assumes no responsibility for the use of any circ uits shown in this data sheet, conveys no license under any patent or other rights unless otherwise specified in this data sheet, and make s no claim that the circuits are free from patent infringem ent. applications for any devices shown in this data sheet are for illustration only and micro analog systems oy makes no claim or warranty that such applications w ill be suitable for the use specified without further testing or modification.

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