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FEDL9098B-01 issue date: aug. 10, 2010 ml9098b clock ic with static and 1/2-duty lcd drivers 1/15 general description the ml9098b is a 24-hour/ 12-hour car clock ic that drives 1/2-duty dynamic or static lcds. it has a wide range of power supplies using oscillation of 4.194304 mhz. the ml9098b has time adjustment functions in hour, minute, and 30-minute units. features ? 24-hour or 12-hour system ? power supplies ranging from 3.0 to 5.5v ? designed for 1/2-duty or static lcds ? 4.194304mhz (crystal oscillation) ? package: 48-pin plastictqfp (tqfp48-p-0707-0.50-k)
FEDL9098B-01 ml9098b 2/15 block diagram frequency divider power-on reset circuit vdd reset reset xin xout m h set a /c common driver seg8 seg9 segment drivers time adjustment seg10 second counter blank minute counter hour counter segment decoder 64hz col_sel seg11 seg12 seg13 seg14 seg15 seg16 seg17 seg18 seg19 seg20 sw_en_sel disp_sel seg21 seg22 seg23 seg24 seg25 seg26 seg7 seg6 seg5 seg4 seg3 seg2 seg1 com1 com2 du_sel vcc bias test
FEDL9098B-01 ml9098b 3/15 pin configuration (top view) 1 2 3 4 5 6 7 8 9 10 11 12 32 31 30 29 28 27 26 25 36 35 34 33 seg26 vss vdd xin xout h nc m set a/c blank seg13 seg12 seg11 seg10 seg2 vcc seg3 seg9 seg8 seg7 seg6 seg5 seg4
FEDL9098B-01 ml9098b 4/15 pin description pin i/o pull-up/ pull-down description com1 o ? output pin for lcd common driver. com2 o ? output pin for 1/2-duty mode lcd common driver. a/c i pull-up pin for clearing all circuits. this pin is placed normally at a "h" level with an internal pull-up resistor. the counters and frequency divider are reset when this pin goes at a ?l? level. h i pull-up hour adjustment pin (for general areas). this pin is placed normally at a "h" level with an internal pull-up resistor. the "hour" indication is fast forwarded at 2 hz when this pin is low. m i pull-up minute adjustment pin. this pin is placed normally at a "h" level with an internal pull-up resistor. the "minute" indication is fast forwarded at 2 hz when this pin is low. blank i ? display on/off pin. "l" level: display off, ?h" level: display on. col_sel i ? pin for selecting the colon output as "flashing" or "lighting". "l" level: flashing, "h" level: lighting xin i xout o ? crystal oscillation pins for connecting a crystal and the capacitors (cin and cout) externally. set i pull-up zero adjustment pin. this pin is placed normally at a "h" level with an internal pull-up resistor. the clock provides 30-minute adjustment when this pin is low. 64hz o ? 64hz output pin seg1 to seg26 o ? output pins from seg1 to seg13 are used in 1/2-duty mode. output pins from seg1 to seg26 are used in static mode. vdd ? ? power supply pin for the logic section. vcc ? ? power supply pin for the driver section. vss ? ? ground pin. disp_sel i ? pin for selecting the 12-hour or 24-hour system. ?h? level: 24-hour system, ?l? level: 12-hour system with am/pm display. sw_en_sel i ? adjustment enable pin. ?l? level: the h, m, and set pins are disabled. ?h? level: the h, m, and set pins are enabled. du_sel i ? duty select pin. "h" level: 1/2-duty dynamic mode, "l" level: static mode. bias ? ? supply voltage pin for the middle level voltage of the common outputs. in the static display mode, this pin should be open. nc ? ? no connection. test i pull-up ic testing pin. this pin is placed normally at a "h" level with an internal pull-up resistor. leave this pin open or fix it to a ?h? level.
FEDL9098B-01 ml9098b 5/15 absolute maximum ratings parameter symbol condition rating unit power supply voltage (drivers) vcc ta = 25c ?0.3 to +6.5 v power supply voltage (logic circuitry) vdd ta = 25c ?0.3 to +6.5 v power supply voltage (drivers & logic circuitry) vss ta = 25c 0 v input voltage (logic circuitry) v i ta = 25c ?0.3 to vdd+0.3 v output voltage (drivers) v do ta = 25c ?0.3 to vcc+0.3 v output voltage (logic circuitry) v lo ta = 25c ?0.3 to vdd+0.3 v output current (drivers) i do ta = 25c ?5 to +5 ma output current (logic circuitry) i lo ta = 25c ?5 to +5 ma power dissipation p d ta ? 105c 416 mw storage temperature t stg ? ?55 to +150 c * vdd=vcc recommended operating conditions vss = 0v parameter symbol condition min. typ. max. unit power supply voltage (drivers & logic circuitry) vcc & vdd ? 3.0 ? 5.5 v operating temperature ta ? ?40 ? 105 c crystal frequency f(xtal) ? 4.194304 mhz * vdd = vcc
FEDL9098B-01 ml9098b 6/15 electrical characteristics dc characteristics (vcc = vdd=3.0 to 5.5 v, ta = ? 40 to +105c) parameter applicable pin symbol condition min. typ. max. unit "h" input voltage *1) v ih vdd = 3.0 to 5.5 v vdd ? 0.8 ? ? v "l" input voltage *1) v il vdd = 3.0 to 5.5 v ? ? vdd ? 0.2 v vdd = vin = 3.3 ? 0.3v i ih2 vdd = vin = 5.0 ? 0.5v ?1 ? 1 ? a vdd = 3.3 ? 0.3v, vin = 0 v ?200 ?65 ?20 set, h, m , a/c,test i il2 vdd = 5.0 ? 0.5v, vin = 0 v ?400 ?155 ?40 ? a vdd = vin = 3.3 ? 0.3v i ih3 vdd = vin = 5.0 ? 0.5v ?1 ? 1 ? a vdd = 3.3 ? 0.3v, vin = 0 v input current col_sel, disp_sel, sw_en_sel, du_sel, blank i il3 vdd = 5.0 ? 0.5v, vin = 0 v ?1 ? 1 ? a vcc = 3.3 v, bias = 1.65 v, vss = 0 v, io = ?150 ? a 3.1 ? ? v v och vcc = 5.0 v, bias = 2.5 v, vss = 0 v, io = ?150 ? a 4.8 ? ? v vcc = 3.3 v, bias = 1.65 v, vss = 0 v, io = ? 150 ? a 1.45 ? 1.85 v v ocm vcc = 5.0 v, bias = 2.5 v, vss = 0 v, io = ? 150 ? a 2.3 ? 2.7 v vcc = 3.3 v, bias = 1.65 v, vss = 0 v, io = 150 ? a ? ? 0.2 v com output voltage v ocl vcc = 5.0 v, bias = 2.5 v, vss = 0 v, io = 150 ? a ? ? 0.2 v vcc = 3.3 v, bias = 1.65 v, vss = 0 v, io = ?30 ? a 3.1 ? ? v v osh vcc = 5.0 v, bias = 2.5 v, vss = 0 v, io = ?30 ? a 4.8 ? ? v vcc = 3.3 v, bias = 1.65 v, vss = 0 v, io = +30 ? a ? ? 0.2 v seg output voltage v osl vcc = 5.0 v, bias = 2.5 v, vss = 0 v, io = +30 ? a ? ? 0.2 v vdd = 3.3v, ioh = ?0.1ma v oh vdd = 5.0v, ioh = ?0.1ma vdd ?0.5 ? ? v vdd = 3.3v, iol = 0.1ma output voltage 64hz v ol vdd = 5.0v, iol = 0.1ma ? ? 0.5 v power-on reset vdd v res *2) 0.9 1.7 2.6 v i d1 vdd = 3.3v, no operation *3 ? ? 400 ? a dynamic supply current vdd & vcc i d2 vdd = 5.0v, no operation *3 ? ? 600 ? a *1) applicable to the following pins: blank, set, h, m, a/c, and col_sel, disp_sel, sw_en_sel, du_sel, test
FEDL9098B-01 ml9098b 7/15 *2) do the followings to operate the power-on reset circuit properly: - make a slope of a rise time of vcc/vdd equal to or smaller than 28.7v/ms. - connect a smoothing capacitor of 1000 pf ? 20% or more between the vdd pin and gnd. *3) f = 4.194304 mhz, open inputs, and non-loaded outputs. power-on/off timing ? connect vdd and vcc pins externally to provide the equal potential. ? to prevent ic erroneous operation, keep the power on/off timing. vdd, vcc pin voltage bias pin voltage (1/2duty) t ? 0 [voltage] [time] t t
FEDL9098B-01 ml9098b 8/15 functional descriptions time base a 4.194304mhz c rystal osc illation circuit (including an amplifier and a feedback resistor) is built in the lsi * keep the crystal and external capacitors as close to this lsi as possible to minimize wiring for connections. * the values of external components, such as a crystal and capacitors, should be determined including capacitance of user's circuit boards. it is recommended to contact a crystal manufacturer. 7-segment display format display device 1/ 2- duty dynamic or static lcds relationship between com output and display static m o de 4f 4a 4g 4b 4c 4e 3c 3f 3a 3g 3e 3b col col colon 2g 2f 2a 2e 2b 2c 1b 1c 1a 1g digit3 3d 2d digit2 digit1 4d digit4 1d 1e am pm dynamic mode com2 com1 3g 1e a b c d e f g (7 segments)
FEDL9098B-01 ml9098b 9/15 driver connection with lcd pin 1/2 duty static com1 com1 ? com1 com2 ? com2 ? seg1 pm am am seg2 1a, 1g, 1e, 1d 4c pm seg3 1c 1b 1a, 1g, 1e, 1d seg4 2e 2f 1b seg5 2g 2a 1c seg6 2d 2b 2e seg7 2c col 2f seg8 3e 3f 2a seg9 3g 3a,3d 2g seg10 3c 3b 2b seg11 4e 4f 2c seg12 4g 4a 2d seg13 4d 4b col seg14 ? ? 3e seg15 ? ? 3f seg16 ? ? 3a, 3d seg17 ? ? 3g seg18 ? ? 3b seg19 ? ? 3c seg20 ? ? 4e seg21 ? ? 4f seg22 ? ? 4a seg23 ? ? 4g seg24 ? ? 4b seg25 ? ? 4c seg26 ? ? 4d
FEDL9098B-01 ml9098b 10/15 display mode 4- di git hour and minute display in 24/12 -hour system hour display 1 to 12 or 0 to 23 minute display 00 to 59 time is not displayed when the most significant digit is 0 (most significant digit zero suppressing function) 24-hour display 12-hour display 1:00 am 1:00 2:00 am 2:00 3:00 am 3:00 4:00 am 4:00 5:00 am 5:00 6:00 am 6:00 7:00 am 7:00 8:00 am 8:00 9:00 am 9:00 10:00 am 10:00 11:00 am 11:00 12:00 pm 12:00 13:00 pm 1:00 14:00 pm 2:00 15:00 pm 3:00 16:00 pm 4:00 17:00 pm 5:00 18:00 pm 6:00 19:00 pm 7:00 20:00 pm 8:00 21:00 pm 9:00 22:00 pm 10:00 23:00 pm 11:00 0:00 am 12:00 time adjustment h o ur/minute fast-forward function the hour and minute digits can be fast forwarded separately. the h (hour setting)/m (minute setting) pins fast forward the hour/minute digits. one push counts one hour/minute. when the hour/minute switch is continuously pressed, the hour/minute digit is incremented at 2hz. the h and m pins are high (inactive state) by the pull-up resistors when the pins are open. these pins are active when driven at a ?l? level externally. the hour and minute digits can be adjusted at the same time. the lower counters continue to operate regularly while the hour digit is adjusted, but a carry from the minute to hour digit is not performed. a carry to the hour digit is not performed while the minute digit is adjusted.
FEDL9098B-01 ml9098b 11/15 zero adjustment function ( ? 3 0 minute reset to zero) the set (zero adjustment) pin is held at a ?h? level (inactive state) with a pull-up resistor when the pin is open. the minute and second digits are reset to 00?00? when the set pin is driven at a ?l? level externally, while the hour digit is unchanged or 1 is added to the hour digit. if the minute digit is less than 30 minutes, the hour digit is unchanged. when the minute digit exceeds 30 minutes, 1 is added to the hour digit. (x ? 1) hours 30 minutes 00 seconds x hours 00 minutes 00 seconds ? x hours 00 minutes 00 seconds (x) hours 29 minutes 59 seconds (x) hours 30 minutes 00 seconds x hours 59 minutes 59 seconds ? (x ? 1) hours 00 minutes 00 seconds (x ? 1) hours 29 minutes 59 seconds blanking of display disp la y on/off pin. "l" level: display off, ?h" level: display on. 64 hz pin t h is is the output pin for adjusting the oscillation frequency. this pin constantly outputs a 64 hz signal. external reset t h is lsi can be reset by placing the a/c pin at a ?l? level, and the display is off when the pin is at a ?l? level. after reset, the display starts from ?1: 00?. disp_sel p i n for selecting the 12-hour system with am/pm or the 24-hour system. the 12-hour system with am/pm is selected when the pin is driven at a ?l? level and the 24-hour system is selected when the pin is driven at a ?h? level. sw_en_sel a d justment enable pin. the h, m, and set pins are disabled by driving the sw_en_sel pin at a ?l? level externally. du_sel lc d du ty selection pin. the static mode is selected when the pin is driven at a ?l? level, and the 1/2-duty dynamic mode is selected when the pin is driven at a ?h? level. bias su p ply voltage pin for the middle level voltage of the common outputs. the value of bias is calculated by the following formula: bias=vcc/2 in the static display mode, this pin should be open. xin, xout cr y stal oscillation pins for connecting a crystal and the capacitors (cin and cout) externally. com1, com2 o u tput pins for lcd common. driving method frame frequency static 64hz 1/2 duty 64hz
FEDL9098B-01 ml9098b 12/15 test pin p i n for manufacturer testing. the pin should be left open or fixed at a ?h? level when not used. power-on reset t h e power-on reset circuit built in this device eliminates the need for providing an external reset circuit. chatter rejection t h e chatter rejecting circuits are connected to the h, m, and set pins. a signal less than 15.625 msec is rejected as chatters. colon flashing/lighting selection flas h ing or lighting of colon is selected by the col_sel pin. col_sel operating mode l flashing at 1 hz h lighting 15.625 msec 15.625 msec input wave form within this period, a signal is rejected as chatters.
FEDL9098B-01 ml9098b 13/15 package dimensions notes for mounting the surface mount type package the surface mount type packages are very susceptible to he at in reflow mounting and humidity absorbed in storage. therefore, before you perform reflow mounting, contact rohm's responsible sales person for the product name, package name, pin number, package code and desired mounting conditions (reflow method, temperature and times). ( unit: mm )
FEDL9098B-01 ml9098b 14/15 revision history page document no. date previous edition current edition description FEDL9098B-01 aug. 10, 2010 ? ? final edition 1
FEDL9098B-01 ml9098b 15/15 notice no copying or reproduction of this document, in part or in whole, is permitted without the consent of lapis semiconductor co., ltd. the content specified herein is subject to change for improvement without notice. the content specified herein is for the purpose of introducing lapis semiconductor's products (hereinafter "products"). if you wish to use any such product, please be sure to refer to the specifications, which can be obtained from lapis semiconductor upon request. examples of application circuits, circuit constants and any other information contained herein illustrate the standard usage and operations of the products. the peripheral conditions must be taken into account when designing circuits for mass production. great care was taken in ensuring the accuracy of the information specified in this document. however, should you incur any damage arising from any inaccuracy or misprint of such information, lapis semiconductor shall bear no responsibility for such damage. the technical information specified herein is intended only to show the typical functions of and examples of application circuits for the products. lapis semiconductor does not grant you, explicitly or implicitly, any license to use or exercise intellectual property or other rights held by lapis semiconductor and other parties. lapis semiconductor shall bear no responsibility whatsoever for any dispute arising from the use of such technical information. the products specified in this document are intended to be used with general-use electronic equipment or devices (such as audio visual equipment, office-a utomation equipment, communication devices, electronic appliances and amusement devices). the products specified in this document are not designed to be radiation tolerant. while lapis semiconductor always makes efforts to enhance the quality and reliability of its products, a product may fail or malfunction for a variety of reasons. please be sure to implement in your equipment using the products safety measures to guard against the possibility of physical injury, fire or any other damage caused in the event of the failure of any product, such as derating, redundancy, fire control and fail-safe designs. lapis semiconductor shall bear no responsibility whatsoever for your use of any product outside of the pr escribed scope or not in accordance with the instruction manual. the products are not designed or manufactured to be used with any equipment, device or system which requires an extremely high level of reliability the failure or malfunction of which may result in a direct threat to human life or create a risk of human injury (such as a me dical instrument, transportation equipment, aerospace machinery, nuclear-reactor controller, fuel-controller or other safety device). lapis semiconductor shall bear no responsibility in any way for use of any of the products for the above special purposes. if a product is intended to be used for any such special purpose, please contact a rohm sales representative before purchasing. if you intend to export or ship overseas any product or technology specified herein that may be controlled under the foreign exchange and the foreign trade law, you will be required to obtain a license or permit under the law. copyright 2010 - 2011 lapis semiconductor co., ltd.

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