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description the M35501FP generates digit signals for fluorescent display when connected to the output port of a microcomputer. there are up to 16 digit pins available, and more can be added by connect- ing additional M35501FPs. the number of fluorescent displays can be increased easily by connecting the M35501FP to the cmos fld (vfd; vacuum fluorescent display) output pins of an 8-bit microcomputer in mitsubishis 38b5 group. the M35501FP is suitable for fluorescent display control on household electric appliances, audio products, etc. outline: 24p2e-a 24-pin plastic-molded ssop pin configuration (top view) M35501FP fld (vfd) digit expander mitsubishi ics fig. 1 pin configuration of M35501FP 123456789101112 13 14 15 16 17 18 19 20 21 22 23 24 M35501FP sel clk v ss v cc ovf in ovf out dig 15 dig 14 dig 13 dig 12 dig 11 dig 10 dig 8 dig 9 dig 7 dig 6 dig 5 dig 4 dig 3 dig 2 dig 1 dig 0 v ee reset ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? features l digit output ............................................................. 16 (maximum) ?up to 16 pins can be selected ?more digits available by connecting additional M35501FPs ?output structure: high-breakdown voltage, p-channel open- drain; built-in pull-down resistor between digit output pins and vee pin l power-on reset circuit ........................................................ built-in l power source voltage ................................................ 4.0 to 5.5 v l pull-down power source voltage ................................ vcc C 43 v l operating temperature range ................................... C20 to 85 c l package ............................................................................. 24p2e l power dissipation ............... 250 m w (at 100 khz operation clock)
2 M35501FP fld (vfd) digit expander mitsubishi ics functional block fig. 2 functional block diagram pin description table 1 pin description pin v cc , v ss reset clk sel ovf in ovf out dig 15 C dig 0 v ee name power source input reset input clock input select input overflow signal input overflow signal output digit output pull-down power source input function apply 4.0C5.5 v to vcc, and 0v to vss. reset internal shift register (built-in power-on reset circuit). digit output varies according to rising edge of clock input. use when specifying the number of digits. input h when using one M35501FP. connect to ovf out pin of additional M35501FPs when using multiple M35501FPs (to use 17 digits or more). leave open when using one M35501FP. connect to ovf in pin of additional M35501FPs when using multiple M35501FPs (to use 17 digits or more). output the digit output waveform of fluorescent display. leave open when not in use (v ee level output). apply voltage to dig 0 Cdig 15 pull-down resistors. output structure C cmos input level built-in pull-up resistor cmos input level built-in pull-down resistor cmos input level built-in pull-down resistor cmos input level cmos output high-breakdown-voltage p-channel open-drain output built-in pull-down resistor C fig. no. C 3 2 2 4 5 1 C v ee dig 15 dig 14 dig 13 dig 12 dig 11 dig 10 dig 9 dig 8 dig 7 dig 6 dig 5 dig 4 dig 3 dig 2 dig 1 dig 0 24 5 2 7 6 3 1 4 power-on reset optional digit counter shift register ovf out ovf in v cc v ss reset clk sel 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8
3 M35501FP fld (vfd) digit expander mitsubishi ics port block fig. 3 port block diagram (1) dig 0 ?ig 15 v ee pull-up transistor pull-down transistor (2) sel, clk (3) reset (4) ovf in (5) ovf out shift register shift register
4 M35501FP fld (vfd) digit expander mitsubishi ics usage three usages of the M35501FP are described below. (1) 16-digit mode: 16 digits selected the number of digits is set to 16 by fixing the ovf in pin to h and the sel pin to l. figure 5 shows the output waveform. (2) optional digit mode: 1-16 digits selectable when the number of clk pin rising edges during an h period of the sel pin is n and the ovf in pin is fixed to h, the number of digits set is n. if n is 16 or more, all 16 digits are set. figure 6 shows the output waveform. fig. 4 digit setting (3) cascade mode: 17 digits or more selectable 17 digits or more can be used by connecting two M35501FPs or more. figure 7 shows an example using three M35501FPs, offering 33 to 48 digit outputs. cascade mode will not operate if all M35501FPs are in 16-digit mode (sel = l). use the most significant M35501FP in the optional digit mode for dig output. figure 8 shows the output waveform. sel pin clk pin n
5 M35501FP fld (vfd) digit expander mitsubishi ics digit output waveform fig. 5 16-digit mode output waveform fig. 6 optional digit mode output waveform ? sel clk dig 0 dig 1 dig 2 dig 13 dig 14 dig 15 ovf out ? sel clk dig 0 dig 1 dig 2 dig 3 dig 4 dig 15 ovf out ? reset
6 M35501FP fld (vfd) digit expander mitsubishi ics fig. 7 cascade mode connection example: 17 digits or more selected fig. 8 cascade mode output waveform dig 0 clk sel reset ovf in (1) ovf in (2) ovf in (3) ovf out (1) ovf out (2) ovf out (3) dig 14 dig 15 dig 1 dig 16 clk sel reset dig 30 dig 31 dig 17 dig 32 clk sel reset dig 46 dig 47 dig 33 reset clk select signal clk dig 0 dig 1 dig 2 dig 15 ovf out (1) reset dig 16 dig 17 dig 31 ovf out (2)
7 M35501FP fld (vfd) digit expander mitsubishi ics the number of fluorescent displays can be increased by connecting the M35501FP to the cmos fld output pins on a 38b5 group mi- crocomputer. this fld controller can control up to 32 digits using the 32 timing mode of the 38b5 group microcomputer. fig. 9 connection example with 38b5 group microcomputer (1 to 16 digits) fig. 10 connection example with 38b5 group microcomputer (17 to 32 digits) m38b5x p2 7 ?2 0 p0 7 ?0 0 p1 7 ?1 0 p3 7 ?3 0 p8 3 ?8 0 p8 4 clk sel m35501 digits dig 0 ?ig 15 segment (high-breakdown-voltage: 36 pins + cmos: 4 pins) fluorescent display (fld) (1 pin used as clk.) m38b5x p2 7 ?2 0 p0 7 ?0 0 p1 7 ?1 0 p3 7 ?3 0 p8 3 ?8 0 clk sel p8 4 clk sel ovf out ovf in ovf out ovf in m35501 m35501 segment (high-breakdown-voltage: 36 pins + cmos: 4 pins) (1 pin is used as clk.) fluorescent display (fld) digits dig 0 ?ig 15 digits dig 16 ?ig 31
8 M35501FP fld (vfd) digit expander mitsubishi ics reset circuit to reset the controller, the reset pin should be held at l for 2 m s or more. reset is released when the reset pin is returned to h and the power source voltage is between 4.0 v and 5.5 v. notes1: perform the reset release when clk input signal is l. 2: when setting the number of digits by sel signal, optional digit counter is set to 0 by reset. fig. 11 digit output waveform when reset signal is input clk dig 0 dig 1 dig 2 dig 3 reset
9 M35501FP fld (vfd) digit expander mitsubishi ics power-on reset reset can be performed automatically during power on (power-on reset) by the built-in power-on reset circuit. when using this cir- cuit, set 100 m s or less for the period in which it takes to reach minimum operation guaranteed voltage from reset. if the rising time exceeds 100 m s, connect the capacitor between the reset pin and v ss at the shortest distance. consequently, the reset pin should be held at l until the minimum operation guaranteed voltage is reached. fig. 12 power-on reset circuit power-on reset circuit pull-up transistor reset pin (note) v dd internal reset signal power-on applied voltage to the reset pin must be vdd or less. note: this symbol represents a parasitic diode. reset released power-on reset circuit output voltage reset state
10 M35501FP fld (vfd) digit expander mitsubishi ics i oh(peak) i oh(peak) i ol(peak) i oh(avg) i oh(avg) i ol(avg) clk v cc v ss v ee v ih v ih v il v il v cc v ee v i v i v o v o p d t opr t stg power source voltage pull-down power source voltage input voltage clk, sel, ovf in input voltage reset output voltage dig 0 Cdig 15 output voltage ovf out power dissipation operating temperature storage temperature ratings C0.3 to 7.0 v cc C45 to v cc +0.3 C0.3 to v cc +0.3 C0.3 to v cc +0.3 v cc C45 to v cc +0.3 C0.3 to v cc +0.3 250 C20 to 85 C40 to 125 v v v v v v mw c c ?all voltages are based on v ss . ?output transistors are off. conditions parameter symbol unit power source voltage power source voltage pull-down power source voltage h input voltage clk, sel, ovf in h input voltage reset l input voltage clk, sel, ovf in l input voltage reset limits min. 4.0 v cc C43 0.8v cc 0.8v cc 0 0 typ. 5.0 0 max. 5.5 v ss v cc v cc 0.2v cc 0.2v cc v v v v v v v parameter symbol unit h peak output current dig 0 C dig 15 (note 1) h peak output current ovf out (note 1) l peak output current ovf out (note 1) h average current dig 0 C dig 15 (note 2) h average current ovf out (note 2) l average current ovf out (note 2) clock input frequency limits min. typ. max. C36 C10 10 C18 C5.0 5.0 2 ma ma ma ma ma ma mhz recommended operating conditions (v cc = 4.0 to 5.5 v, ta = C20 to 85 c, unless otherwise noted) parameter symbol unit notes 1: the peak output current is the peak current flowing in each port. 2: the average output current is an average value measured over 100 ms. ta = 25 c absolute maximum ratings recommended operating conditions (v cc = 4.0 to 5.5 v, ta = C20 to 85 c, unless otherwise noted)
11 M35501FP fld (vfd) digit expander mitsubishi ics h output voltage h output voltage l output voltage hysteresis h input current h input current l input current l input current output load current output leakage current power source v oh v oh v ol v t +v t C i ih i ih i il i il i load i leak i cc i oh = C18 ma i oh = C10 ma i ol = 10 ma v cc = 5.0 v v i = v cc v i = v cc v cc = 5.0 v v i = v ss v i = v ss v cc = 5.0 v v ee = v cc C43 v v ol = v cc output transistors are off. v ee = v cc C43 v v ol = v cc C43 v output transistors are off. electrical characteristics (v cc = 4.0 to 5.5 v, ta = C20 to 85 c, unless otherwise noted) test conditions parameter symbol dig output dig 0 Cdig 15 ovf out ovf out clk, ovf in reset ovf in reset clk, sel ovf in clk, sel reset dig 0 C dig 15 dig 0C dig 15 limits min. v cc C2.0 v cc C2.0 30 C60 500 typ. 0.4 70 C130 650 50 max. 2.0 5.0 140 C5.0 C185 800 C10 v v v v m a m a m a m a m a m a m a unit v cc = 5.0 v, clk = 100 khz output transistors are off.
12 M35501FP fld (vfd) digit expander mitsubishi ics t w(reset) t c ( clk ) t wh ( clk ) t wl ( clk ) t su ( sel ) t h ( sel ) t h ( clk ) fig. 13 timing diagram reset input l pulse width clock input cycle time clock input h pulse width clock input l pulse width select input setup time select input hold time clock input setup time limits min. 2 500 200 200 500 500 500 typ. max. m s ns ns ns ns ns ns timing requirements (v cc = 4.0 to 5.5 v, ta = C20 to 85 c, unless otherwise noted) parameter symbol unit 0.2v cc 0.8v cc t c(clk) t wl(clk) t wh(clk) clk 0.2v cc 0.8v cc t w(reset) reset sel clk t su(sel) t h(sel) v cc v ss v cc v ss v cc v ss v cc v ss t h(clk)
? 1998 mitsubishi electric corp. new publication, effective feb. 1998. specifications subject to change without notice. notes regarding these materials ? these materials are intended as a reference to assist our cu stomers in the selection of the mitsubishi semiconductor pro duct best suited to the customer s application; they do not convey any license under any intellectual property rights, or any other rights, belonging to mitsubishi electric corporation or a third party. ? mitsubishi electric corporation assumes no responsibility fo r any damage, or infringement of any third-party s rights, originating in the use of any product data, diagra ms, charts or circuit application examples contained in these materials. ? all information contained in these materials, including prod uct data, diagrams and charts, represent information on prod ucts at the time of publication of these materials, and are subject to change by mitsubishi electric corporation without notice due to product improveme nts or other reasons. it is therefore recommended that custo mers contact mitsubishi electric corporation or an authorize d mitsubishi semiconductor product distributor for the latest product information befor e purchasing a product listed herein. ? mitsubishi electric corporation semiconductors are not desig ned or manufactured for use in a device or system that is us ed under circumstances in which human life is potentially at stake. please contact mitsubishi electric corporation or an authorized mitsubishi semiconductor product distributor when considering the use o f a product contained herein for any specific purposes, such as apparatus or systems for transportation, vehicular, medical, aerospace, nuclear, or u ndersea repeater use. ? the prior written approval of mitsubishi electric corporatio n is necessary to reprint or reproduce in whole or in part t hese materials. ? if these products or technologies are subject to the japanes e export control restrictions, they must be exported under a license from the japanese government and cannot be imported into a country other than the approved destination. any diversion or reexport contrary to the export control law s and regulations of japan and/or the country of destination is prohibited. ? please contact mitsubishi electric corporation or an authori zed mitsubishi semiconductor product distributor for further details on these materials or the products contained therei n. keep safety first in your circuit designs! ? mitsubishi electric corporation puts the maximum effort into making semiconductor products better and more reliable, but there is always the possibility that trouble may occur with them. trouble with semiconductors may lead to personal injury, fire or property damage. remember to give due consideration to safety when m aking your circuit designs, with appropriate measures such a s (i) placement of substitutive, auxiliary circuits, (ii) use of non-flammable material or (iii) prevention against any malfunction or mish ap.
rev. rev. no. date 1.0 first edition 980216 revision description list M35501FP data sheet (1/1) revision description

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