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hulacoder tm is a trademark of usar systems, inc. all other trademarks belong to their respective companies. usar datasheet 1 usar hulacoder tm ur7hcdmp usar hulapoint tm - ergonomic mouse ps2/rs232 encoder mature mousecoder tm product specifications description doc7-dmp-ds-102 features applications ? embedded hulapoints ? industrial panels ? instrumentation pin descriptions ? works with innovative proprietary sensor technology developed by fujitsu microelectronics ? responds to feather-light touch without resistance ? small 18 pin plastic pdip and soic packages available ? autoselectable rs232 or p7s/2 hardware interface ? customized versions available ? equipped with advanced motion control algorithm ? low power consumption in a 3 to 6 volt operating range ? effortless and accurate cursor control with 10 degree movement in every direction ? compatible with ibm/microsoft two- button and logitech three-button mouse the usar hulacoder tm ur7hcdmp is an easy-to-use single-chip encoder that interfaces an innovative sensor developed by fujitsu. together they make the usar hulapoint tm . equipped with an advanced motion algorithm, the ur7hcdmp offers low power consumption in a small footprint package. the device can be linked through either the serial or ps/2- type mouse port of the host system. the ur7hcdmp is compatible with the ibm and microsoft two-button and the logitech three-button mouse communication protocols. the device will auto switch between the serial and the ps/2 mouse communication protocol depending on the port to which the device is actually connected. communication through the serial port is half-duplex at a fixed speed of 1200 baud. ps/2 communication is bidirectional at 10 kbps. the usar hulacoder tm implements all commands from and to the system, as defined in the ibm ps/2 mouse communication protocol. the ur7hcdmp is a cmos device operating at 4 mhz. the low- power consumption of the ic makes it suitable for battery operated systems. power in the serial mode, as in any standard mouse, can be drawn from the rs232 lines of the host system. custom versions are available to suit a wide range of pointing device applications. 1 2 3 4 5 6 7 8 9 18 17 16 15 14 13 12 11 10 chx rtsin ser-out resetin vss (gnd) ps2clk ps2dat rightsw leftsw chy pwron oscin oscout vdd (+v) d/a-2 d/a-1 d/a-0 middlesw dip/ soic
usar hulacoder tm ur7hcdmp matur e mousecoder tm pr oduct specifications doc7-dmp-ds-102 usar datasheet 2 usar systems, inc. functional diagram or dering code package options 18-pin, plastic dip 18-pin,soic t a=0 o c to +70 o c ur7hcdmp-p ur7hcdmp-dw t a=40 o c to +85 o c ur7hcdmp-cp UR7HCDMP-CDW functional description the ur7hcdmp consists functionally of five major sections (see functional diagram below). these ar e the sensor inter face, the sixteen bit t imer , the oscillator cir cuit, the ps/2 communication por t and the rs232 communication por t. all sections communicate with each other and operate concur r ently . descri r ewr wer data buf fer ps/2 communication por t rs232 communication por t ps2clk ps2da t txd r ts hulapoint inter face oscillator cir cuit power -on reset switch inter face x input y input contr ol chx oscin-oscout 16 bit t imer 2 chy sensor power str obe resolution enhancement d/a 3 left button middle button right button
usar hulacoder tm ur7hcdmp matur e mousecoder tm pr oduct specifications usar datasheet doc7-dmp-ds-102 3 usar systems, inc. autoselect at power -up the usar hulacoder tm will execute a power -on r eset and deter mine the mode of operations. ps/2 mode at star t-up or upon r eceiving a r eset command, clock and data lines of the usar hulacoder tm can be pulled to a positive level. the ur7hcdmp will then wait between 300 and 500 milliseconds befor e sending an aah to the host followed by a device id of 00h. then the ic will set itself to its default values, i.e. incr emental str eam mode with 1:1 scaling, and a r epor t rate of 100 hz. the device will then disable itself until a command is sent fr om the host. er r or handling for ever y cor r ect command or parameter r eceived fr om the host, the ur7hcdmp sends an acknowledge (f ah). if an invalid command or parameter is r eceived, the ur7hcdmp issues a resend request (feh). if an invalid input is again r eceived, the device transmits an er r or code (fch) to the host. both er r or and resend request r esponses ar e sent by the device within 25 milliseconds. the host may not issue any new commands until either the usar hulacoder tm has r esponded or until 25 milliseconds have elapsed. pin description pin numbers mnemonic dip soic type name and function chx 1 1 analog input horizontal input r tsin 2 2 i/o r ts sense, power save out serout 3 3 o, open drain s s e e r r i i a a l l t t x x d d a a t t a a resetin 4 4 i reset: apply 0 v for or derly star t up. gnd 5 5 power gr ound ps2clk 6 6 i/o ps/2 clock ps2da t 7 7 i/o ps/2 data rightsw 8 8 i w/ pullup right switch: low = on. leftsw 9 9 i w/ pullup left switch: low = on. middlesw 10 10 i w/ pullup middle switch: low=on. d/a-0 11 11 o resolution enhancement d/a: lsb. d/a-1 12 12 o resolution enhancement d/a d/a-2 13 13 o resolution enhancement d/a: msb. vcc 14 14 power power supply oscout 15 15 o oscillator output oscin 16 16 i o o s s c c i i l l l l a a t t o o r r i i n n p p u u t t pwron 17 17 o sensor power str obing contr ol chy 18 18 analog input v er tical input pin description notes the inter nal oscillator has a built-in feedback r esistor . only one (1) exter nal component is needed for clock generation. usar r ecommends a 4.00 mhz ceramic resonator with built-in load capacitors. rightsw , leftsw , and middlesw inputs have built-in pull-up r esistors. no additional components ar e r equir ed for a thr ee-button design. however , if high levels of esd and emi ar e expected, than series pr otection r esistors (47 ohms to 1k ohms) ar e r ecommended between the switches and the switches inputs on the ic.
usar hulacoder tm ur7hcdmp matur e mousecoder tm pr oduct specifications usar datasheet doc7-dmp-ds-102 4 usar systems, inc. ps/2 mode commands when the reset command (ffh) is enacted, the ur7hcdmp sets the following default parameters: incr emental str eam mode, 1:1, scaling, disabled, and a r epor t rate of 100 hz and then sends aah to the host followed by a device id of 00h. the host sends the resend last data str eam command (feh) when it detects an er r or in any ur7hcdmp transmission. the device then r esends the last output data str eam to the host. this transmission occurs after a usar hulacoder tm transmission and befor e the host enables the inter face allowing the next usar hulacoder tm output. the set default status command (f6h) r e-initializes the device to its condition at power -up. the disable command (f5h) stops the device fr om transmitting all r epor ts. however , the mode does not change; the hulacoder tm is still able to r espond to commands. if the disable command is issued while the device is transmitting a r epor t, the ur7hcdmp immediately stops the transmission and disables itself. if the usar hulacoder tm is in incr emental str eam mode, the enable command (f4h) will allow it to begin data transmission. if the device is in pr ompt mode, the enable command will update the inter nal status of the usar hulacoder tm , but will not allow the device to transmit data to the host either while it is moving or when a button is depr essed. ps/2 data for mat the following table shows the data r epor t for mat. v alues ar e expr essed in a t wo s complement for mat with a separate sign bit. if ther e is an over flow of the accumulator , the maximum positive or negative count is r epor ted and the cor r esponding over flow bit is set. byte 1 b0 left button status 1 = depr essed b1 right button status 1 = depr essed b2 middle button status 1 = depr essed b3 always = 1 b4 x data sign 1 = negative b5 y data sign 1 = negative b6 x data over flow 1 = over flow b7 y data over flow 1 = over flow byte 2 b0 x0: lsb of x data b1 x1 b2 x2 b3 x3 b4 x4 b5 x5 b6 x6 b7 x7: msb of x data byte 3 b0 y0: lsb of y data b1 y1 b2 y2 b3 y3 b4 y4 b5 y5 b6 y6 b7 y7: msb of y data status repor t for mat t able byte 1 b0 right button 1 = depr essed b1 middle button 1 = depr essed b2 left button 1 = depr essed b3 always = 0 b4 scaling - 1:1 (0) / 2:1 (1) b5 disable - (0) / enable (1) b6 str eam - (0) / pr ompt (1) mode b7 always = 0 byte 2 b0 - 1 cur r ent r esolution setting b2 - 7 always = 0 byte 3 b0-7 cur r ent sampling rate
usar hulacoder tm ur7hcdmp matur e mousecoder tm pr oduct specifications usar datasheet doc7-dmp-ds-102 5 usar systems, inc. ps/2 mode commands, cont the usar hulacoder tm will r espond to the s et sampling rate command (f3h) in both str eam and pr ompt modes, but will only update its inter nal status if the command is enacted while the device is in str eam mode the ur7hcdmp r esponds to the the read device t ype command (f2h) immediately after the acknowledge with a 00h. the set pr ompt (remote) mode command (f0h) sets the device to pr ompt mode. data values ar e then only r epor ted in r esponse to a read repor t command (ebh). if the set echo mode command (eeh) is enacted, the usar hulacoder tm will immediately r etur n any data bytes except ff or ec. the reset echo mode command (ech) r etur ns the device to its pr evious mode - disabled. if this command occurs while the ur7hcdmp is in either str eam or pr ompt modes, the command is ignor ed. the read repor t command (ebh) pr ompts the usar hulacoder tm for a r epor t. the r epor t occurs even if the device did not move or if the status of the switches did not change. the r epor t is sent by the ur7hcdmp following an acknowledge. the set incr emental str eam mode command (eah) sets the usar hulacoder tm to str eam mode and disables the device. sequential commands unlike nor mal commands, sequential commands must be enacted with a sequence of commands. if the sequence is not consecutive or is incor r ect, the usar hulacoder tm abor ts the detection and r esponds the way it would nor mally r espond to a command. the individual commands that comprise a sequential command have been designed so that the elements of a sequential command can be sent to the usar hulacoder tm via the standar d ibm ps/2 bios calls and the device only r etur ns a valid r esponse to the standar d status request. this ensur es that, if the sequential command is sent via the bios, the status r esponse will be accurately r etur ned even if the bios does er r or detection. thus, a pr ogrammer can have complete contr ol of the mouse without having to access the device har dwar e por t dir ectly . the usar hulacoder tm implements a special sequential command that can be used to deter mine its ability to r epor t thr ee buttons. the sequential command is a series of commands to the usar hulacoder tm that cause the device to r espond to the last command (read status) with alter nate infor mation. sequence of commands: 1. set resolution = one count/ mm dir ect: e8h,00h bios: int15h, ax=c203h, bx=0 2. set scaling = 1:1 dir ect: e6h bios: int15h, ax=c206h, bx=1 3. set scaling = 1:1 dir ect: e6h bios: int15h, ax=c206h, bx=1 4. set scaling = 1:1 dir ect: e6h bios: int15h, ax=c206h, bx=1 5. read status dir ect: e9h bios: int15h, ax=c206h, bx=0 the r esponse to the read status command is in the for m: byte 1: standar d status infor mation (buttons, scaling, etc.) byte 2: number of mouse buttons (3)
usar hulacoder tm ur7hcdmp matur e mousecoder tm pr oduct specifications usar datasheet doc7-dmp-ds-102 6 usar systems, inc. ps/2 mode commands, cont. the status request command (e9h) r etur ns a 3 byte status r epor t. the set resolution command (e8h) contr ols r esolution, and the set 2:1 scaling command (e7h) enables a coarse/fine tracking r esponse. due to the advanced motion algorithm, set resolution and scaling command ar e acknowledged and r epor ted as activated, but their status is ignor ed.the set 1:1 scaling command (e6h) enables the values of movements to be transmitted to the host without any scaling serial mode communication thr ough the serial por t is half-duplex at a fixed speed of 1200 baud, 7n2 pr otocol. at star t-up and after each r ts toggle the usa hulacoder tm will send a two-character ascii string m3 indicating 3-button capability to the host. a data repor t is sent if motion is detected, or if buttons ar e pr essed or r eleased. motion is r epor ted r elative to the last repor t sent, in a t wo s complement for m and eight (8) bit r esolution. in other wor ds, the maximum motion values ar e - 128 to +127, saturated at min/max for faster speeds. byte 4 is sent only if the middle button is pr essed, held-down, or r eleased. serial data repor t for mat t able byte 1 b0 x6 b1 x7: msb of x data b2 y6 b3 y7: msb of y data b4 right button status 1 = depr essed b5 left button status 1 = depr essed b6 always=1 byte 2 b0 x0: lsb of x data b1 x1 b2 x2 b3 x3 b4 x4 b5 x5 b6 always=0 byte 3 b0 y0: lsb of y data b1 y1 b2 y2 b3 y3 b4 y4 b5 y5 b6 always=0 byte 4 b0 - 4 always = 0 b5 middle button status 1=depr essed b6 always=0
usar hulacoder tm ur7hcdmp matur e mousecoder tm pr oduct specifications hulapoint tm sensor dimensions usar datasheet doc7-dmp-ds-102 7 usar systems, inc.
usar hulacoder tm ur7hcdmp matur e mousecoder tm pr oduct specifications hulapoint tm evaluation boar d mechanical usar datasheet doc7-dmp-ds-102 8 usar systems, inc.
usar hulacoder tm ur7hcdmp matur e mousecoder tm pr oduct specifications hulapoint tm alter nate kit with rubber overlay material usar datasheet doc7-dmp-ds-102 9 usar systems, inc.
usar hulacoder tm ur7hcdmp matur e mousecoder tm pr oduct specifications sample schematic usar datasheet doc7-dmp-ds-102 10 usar systems, inc. v c c v o l t _ d e t v c c . 1 u f v c c g n d u r 7 h c d m p - a k t a - d w v c c m o s f e t _ p f f c c 4 2 4 9 k 2 4 9 k 4 9 9 k 4 9 9 k 4 8 7 4 8 7 . 0 1 u f v c c g n d g n d 4 . 0 0 m h z g n d 4 7 p f 4 7 p f 4 7 4 7 1 0 0 k m o s f e t _ p 4 . 7 k 4 . 7 k d u a l _ s c h o t t k y _ d i o d r x d > > > > r t s < < < < d c d / p s 2 c l k s h i e l d g n d d t r < < < < r i / p s 2 d a t a t x d < < < < c t s / p s 2 + 5 v 4 . 7 k 5 3 0 4 8 _ 0 9 1 0 p n p 6 8 0 1 0 0 k g n d 1 2 u h 6 8 0 6 8 0 6 8 0 v c c t c 5 5 r p 5 0 0 2 e c b 7 1 3 g n d n o t _ m i d d l e _ s w n o t _ l e f t _ s w n o t _ r i g h t _ s w f f c c 4 1 0 u f g n d g n d n p n 1 0 u f 2 5 v g n d s h i e l d _ c o n v c c 1 2 3 5 u 2 c 3 c h x 1 r t s _ i n 2 s e r o u t 3 r e s e t _ i n 4 v s s ( g n d ) 5 p s 2 c l k 6 p s 2 d a t a 7 r i g h t _ s w 8 l e f t _ s w 9 m i d d l e _ s w 1 0 d / a _ 0 1 1 d / a _ 1 1 2 d / a _ 2 1 3 v d d ( + v ) 1 4 o s c 2 / o u t 1 5 o s c 1 / i n 1 6 p w r _ o n 1 7 c h y 1 8 u 1 q 1 1 2 3 4 j p 1 r 9 r 1 0 r 1 1 r 1 2 r 1 3 r 1 4 c 4 y 1 c 1 c 2 r 1 r 2 r 8 q 2 1 2 d 2 a r 3 r 4 1 3 d 2 b s h 1 s h 3 r 5 1 2 3 4 5 6 7 8 9 j p 2 1 2 d 1 a q 3 1 3 d 1 b r 6 r 7 l 1 r 1 7 r 1 8 r 1 9 v s s 1 v i n 2 v o u t 3 u 3 1 2 3 4 j p 3 c 5 q 4 c 6 s h 2 s h 4
usar hulacoder tm ur7hcdmp matur e mousecoder tm pr oduct specifications electrical specifications for ur7hcdmp usar datasheet doc7-dmp-ds-102 11 usar systems, inc. absolute maximum ratings ratings symbol v alue unit supply v oltage vdd 0 to 7.5 v input v oltage v in vss -0.6 to vdd +0.6 v cur r ent drain per pin i 20 ma (not including vss or vdd) operating t emperatur e t a t low to t high c ur7hcdmp-xx 0 to +70 ur7hcdmp-cxx -40 to +85 storage t emperatur e range t stg -65 to +150 c ambient t emperatur e under bias tbias -55 to +125 c dc electrical characteristics, t emperatur e range=t low to t high unless other wise noted) characteristic symbol min t yp max unit supply v oltage 3.0 5.0 6.0 v output v oltage v oh vddC0.1 v v ol 0.1 input high v oltage v ih 0.7xvdd vdd v input low v oltage v il vss 0.2xvdd v input cur r ent iin +/- 1 ua inter nal pull-up cur r ent ipup 50 250 500 ua supply cur r ent vdd=0 idd 2.0 3.5 ma5. vdc+/-10%, vss=0 contr ol t iming (vdd=5.0 vdc +/-10%, vss=0 vdc, t emperatur e range=t low to t high unless other wise noted) characteristic symbol min t yp max unit fr equency of operation fosc mhz cr ystal option 4.0 exter nal clock option 4.0
description for sales infor mation and pr oduct literatur e, contact: usar systems, inc. 568 br oadway new y ork, ny 10012 info@usar .com http://www .usar .com t elephone 1 212 226 2042 t elefax 1 212 226 3215 in japan: mitsubishi electr onic semiconductor t elephone +81 03 5403 0422 e-mail iidamt@hon.mesc.co.jp contact: masatoshi iida in singapor e: metat ech t elephone +65 748 4844 e-mail mike.t iong@metatech.com.sg contact: mike t iong in t aiwan: kor yo electr onics co., ltd. t elephone +886-2-2698-1143 e-mail alex.chen@kor yo.com.tw contact: alex chen in kor ea: bong w oo corporation ltd. t el : +82 2 285-0540~8 email inchulpark@hotmail.com contact: i.c. park copyright 1999 usar systems, inc. hulacoder tm and hulapoint tm ar e trademarks of usar systems, inc. all other trademarks belong to their r espective companies. intellectual proper ty disclaimer this specification is pr ovided "as is" with no war ranties whatsoever including any war ranty of mer chantability , fitness for any par ticular purpose, or any war ranty other wise arising out of any pr oposal, specification or sample. a license is her eby granted to r epr oduce and distribute this specification for inter nal use only . no other license, expr essed or implied to any other intellectual pr oper ty rights is granted or intended her eby . authors of this specification disclaim any liability , including liability for infringement of pr oprietar y rights, r elating to the implementation of infor mation in this specification. authors of this specification also do not war rant or r epr esent that

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