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? 2002 microchip technology inc. ds21394b-page 1 tc14433/a features ? accuracy: 0.05% of reading 1 count two voltage ranges: 1.999v and 199.9 mv up to 25 conversions per second z in > 1000m ohms single positive voltage reference auto-polarity and auto-zero overrange and underrange signals available operates in auto-ranging circuits uses on-chip system clock or external clock wide supply range: 4.5v to 8v applications portable instruments digital voltmeters digital panel meters digital scales digital thermometers remote a/d sensing systems mpu systems device selection table package type part number package temperature range TC14433AEJG 24-pin cerdip (wide) -40c to +85c tc14433aeli 28-pin plcc -40c to +85c tc14433aepg 24-pin pdip (wide) -40c to +85c tc14433cog 24-pin soic (wide) 0c to +70c tc14433ejg 24-pin cerdip (wide) -40c to +85c tc14433eli 28-pin plcc -40c to +85c tc14433epg 24-pin pdip (wide) -40c to +85c 1 2 3 4 16 15 14 5 6 7 8 13 19 18 17 9 10 11 12 20 21 22 23 24 v dd q 3 q 2 q 1 q 0 ds 1 ds 3 ds 2 ds 4 eoc or r 1 c 1 co 1 co 2 r 1 /c 1 clk0 clk1 du v ee v ss v ag v x v ref tc14433/a 24-pin pdip (wide) 24-pin cerdip (wide) 24-pin soic (wide) v ref nc v dd q 3 q 1 q 0 ds 2 ds 3 ds 1 ds 4 q 2 v ag v x co 1 v ee co 2 r 1 /c 1 c 1 r 1 v ss eoc or nc nc nc du clk0 clk1 19 20 21 22 23 24 25 11 10 9 8 7 6 5 tc14433/a 12 13 14 15 17 18 4 3 2 1 27 26 28 16 28-pin plcc note 1: nc = no internal connection (in 28-pin plcc). 2: 24-pin soic (wide) package, only for tc14433 device. 3-1/2 digit, analog-to-digital converter
tc14433/a ds21394b-page 2 ? 2002 microchip technology inc. general description the tc14433 is a low power, high performance, monolithic cmos 3-1/2 digit a/d converter. the tc14433 combines both analog and digital circuits on a single ic, thus minimizing the number of external components. this dual slope a/d converter provides automatic polarity and zero correction with the addition of two external resistors and two capacitors. the full scale voltage range of this ratiometric ic extends from 199.9 millivolts to 1.999 volts. the tc14433 can operate over a wide range of power supply voltages, including batteries and standard 5-volt supplies. the tc14433a features improved performance over the industry standard tc14433. rollover, which is the measurement of identical positive and negative signals, is specified to have the same reading within one count for the tc14433a. power consumption of the tc14433a is typically 4mw, approximately one- half that of the industry standard tc14433. the tc14433/a is available in 24-pin pdip, 24-pin cerdip, 24-pin soic (tc14433 device only), and 28-pin plcc packages. typical application 3 1 4 5 6 7 8 23 22 21 20 13 9 14 15 19 18 17 16 11 10 2 12 24 4 2 3 5 9 10 11 12 13 14 15 1 7 6 5 4 3 2 1 10 11 12 13 14 15 16 0.1 f** 0.1 f 0.1 f 50 f 0.1 f** r 1 * *r 1 = 470k ? for 2v range r 1 = 27k ? for 200mv range **mylar capacitor v x 20k d c s r tc14433 q q d c s r +5v -5v 16 +5v +5v segment resistors 150 ? (7) +5v q q -5v -5v -5v -5v 8 minus sign 200 ? 51k 67 +5v -5v -5v -5v mps-a12 (4) common anode led display mps-a12 300k r c 0.1 14013b 5 3 9 11 1 2 13 12 6 714 10 fgedcba +5v 1 f 1 f 4 8 ds 4 ds 3 ds 2 ds 1 -5v mcp1525 4543b 1413 v in v out v ss plus sign 110 ?
? 2002 microchip technology inc. ds21394b-page 3 tc14433/a 1.0 electrical characteristics absolute maximum ratings* supply voltage (v dd ?v ee ) ................... -0.5v to +18v voltage on any pin: referencetov ee .....................-0.5v to (v dd +0.5) dc current, any pin: ........................................ 10ma power dissipation (t a 70c): plastic plcc ................................................. 1.0w plastic pdip.................................................. 940w soic ............................................................. 940w cerdip ....................................................... 1.45w operating temperature range ............... 0c to +70c storage temperature range .............. -65c to +160c *stresses above those listed under "absolute maximum ratings" may cause permanent damage to the device. these are stress ratings only and functional operation of the device at these or any other conditions above those indicated in the operation sections of the specifications is not implied. exposure to absolute maximum rating conditions for extended periods may affect device reliability. tc14433/a electrical specifications electrical characteristics: v dd =+5v,v ee =-5v,c 1 =0.1 f, (mylar), c 0 =0.1 f, r c =300k ? ,r 1 =470k ? @v ref =2v, r 1 =27k ? @v ref = 200mv, unless otherwise specified. symbol parameter min typ max min typ max units test conditions analog input t a = +25c t a =+25c sye rollover error (positive) and negative full scale symmetry -1 ? +1 ? ? ? counts 200mv full scale v in -v in =+v in nl linearity output reading (note 1) -0.05 +0.05 +0.05 ? ? ? %rdg v ref =2v -1 count ? +1 count ? ? ? %rdg v ref =200mv sor stability output reading (note 2) ?? 2???lsdv x =1.99v, v ref =2v ?? 3???lsdv x =199mv, v ref =200mv zor zero output reading ? 0 0 ??? lsd v x =0v,v ref =2v i in bias current: analog input reference input analog ground ? 20 100 ? ? ? pa ? 20 100 ? ?? pa ? 20 100 ? ?? pa cmrr common mode rejection ? 65 ? ? ?? db v x =1.4v,v ref =2v, f oc =32khz note 1: accuracy - the accuracy of the meter at full scale is the accuracy of the setting of the reference voltage. zero is recalculated during each conversion cycle. the meaningful specification is linearity. in other words, the deviation from correct reading for all inputs other than positive full scale and zero is defined as the linearity specification. 2: the lsd stability for 200mv scale is defined as the range that the lsd will occupy 95% of the time. 3: pinnumbersreferto24-pinpdip.
tc14433/a ds21394b-page 4 ? 2002 microchip technology inc. digital v ol output voltage (pins14to23) (note 3) ? 0 0.05 ? ? 0.05 v v ss = 0 v, "0" level ? -5 -4.95 ? ? -4.95 v v ss = -5v, "0" level v oh output voltage (pins14to23) (note 3) 4.95 5 ? 4.95 ? ? v v ss = 0v, "1" level 4.95 5 ? 4.95 ? ? v v ss = -5v, "1" level i oh output current (pins14to23) -0.2 -0.36 ? -0.14 ? ? ma v ss =0v,v oh =4.6v source - 0.5 -0.9 ? -0.35 ? ? ma v ss =-5v,v oh =5v source i ol output current (pins14to23) 0.51 0.88 ? 0.36 ? ? ma v ss =0v,v ol =0.4v sink 1.3 2.25 ? 0.9 ? ? ma v ss =-5v, v ol = -4.5v sink f clk clock frequency ? 66 ? ? ? ? khz r c =300k ? i du input current -du ? 0.00001 0.3 ? ? 1 a power i q quiescent current: 14433a: ? ? ? ? ? ? ? v dd to v ee ,i ss =0 ? 0.4 2 ? ? 3.7 ma v dd =5,v ee =-5 ? 1.4 4 ? ? 7.4 ma v dd =8,v ee =-8 quiescent current: 14433: ? ? ? ? ? ? ? v dd to v ee ,i ss =0 ? 0.9 2 ? ? 3.7 ma v dd =5,v ee =-5 ? 1.8 4 ? ? 7.4 ma v dd =8,v ee =-8 psrr supply rejection ? 0.5 ? ? ? ? mv/v v dd to v ee ,i ss =0, v ref =2v, v dd =5,v ee =-5 tc14433/a electrical specifications (continued) electrical characteristics: v dd =+5v,v ee =-5v,c 1 =0.1 f, (mylar), c 0 =0.1 f, r c =300k ? ,r 1 =470k ? @v ref =2v, r 1 =27k ? @v ref = 200mv, unless otherwise specified. symbol parameter min typ max min typ max units test conditions note 1: accuracy - the accuracy of the meter at full scale is the accuracy of the setting of the reference voltage. zero is recalculated during each conversion cycle. the meaningful specification is linearity. in other words, the deviation from correct reading for all inputs other than positive full scale and zero is defined as the linearity specification. 2: the lsd stability for 200mv scale is defined as the range that the lsd will occupy 95% of the time. 3: pinnumbersreferto24-pinpdip.
? 2002 microchip technology inc. ds21394b-page 5 tc14433/a 2.0 pin descriptions thedescriptionsofthepinsarelistedintable2.0. table 2-1: pin function table pin no. (24-pin pdip) (24-pin cerdip) (24-pin soic) pin no. (28-pin plcc) symbol description 12v ag this is the analog ground. it has a high input impedance. the pin determines the reference level for the unknown input voltage (v x ) and the reference voltage (v ref ). 23v ref reference voltage - full scale output is equal to the voltage applied to v ref . therefore, full scale voltage of 1.999v requires 2v reference and 199.9mv full scale requires a 200mv reference. v ref functions as system reset also. when switched to v ee , the system is reset to the beginning of the conversion cycle. 34v x the unknown input voltage (v x ) is measured as a ratio of the reference voltage (v ref ) in a rationetric a/d conversion. 45r 1 this pin is for external components used for the integration function in the dual slope conversion. typical values are 0.1 f (mylar) capacitor for c 1 . 56r 1 /c 1 r 1 =470k ? (resistor) for 2v full scale. 67c 1 r 1 =27k ? (resistor) for 200mv full scale. clock frequency of 66khz gives 250msec conversion time. 79co 1 these pins are used for connecting the offset correction capacitor. the recommended value is 0.1 f. 810co 2 these pins are used for connecting the offset correction capacitor. the recommended value is 0.1 f. 9 11 du display update input pin. when du is connected to the eoc output, every conversion is displayed. new data will be strobed into the output latches during the conversion cycle if a positive edge is received on du, prior to the ramp down cycle. when this pin is driven from an external source, the voltage should be referenced to v ss . 10 12 clk 1 clock input pins. the tc14433 has its own oscillator system clock. connecting a single resistor between clk 1 and clk 0 sets the clock frequency. 11 13 clk 0 a crystal or oc circuit may be inserted in lieu of a resistor for improved clk 1 ,the clock input, can be driven from an external clock source, which need only have standard cmos output drive. this pin is referenced to v ee for external clock inputs. a300k ? resistor yields a clock frequency of about 66khz. see section 5.0 typical characteristics. (also see figure 4-3 for alternate circuits.) 12 14 v ee negative power current. connection pin for the most negative supply. please note the current for the output drive circuit is returned through v ss . typical supply current is 0.8ma. 13 16 v ss negative power supply for output circuitry. this pin sets the low voltage level for the output pins (bcd, digit selects, eoc, or). when connected to analog ground, the output voltage is from analog ground to v dd . if connected to v ee , the output swing is from v ee to v dd . the recommended operating range for v ss is between the v dd -3 volts and v ee . 14 17 eoc end of conversion output generates a pulse at the end of each conversion cycle. this generated pulse width is equal to one half the period of the system clock. 15 18 or overrange pin. normally this pin is set high. when v x exceeds v ref the or is low. 16 19 ds 4 digit select pin. the digit select output goes high when the respective digit is selected. the msd (1/2 digit turns on immediately after an eoc pulse). 17 20 ds 3 the remaining digits turn on in sequence from msd to lsd. 18 21 ds 2 to ensure that the bcd data has settled, an inter digit blanking time of two clock periods is included. 19 23 ds 1 clock frequency divided by 80 equals multiplex rate. for example, a system clock of 60khz gives a multiplex rate of 0.8khz. 20 24 q 0 see figure 4-4 for digit select timing diagram.
tc14433/a ds21394b-page 6 ? 2002 microchip technology inc. 21 25 q 1 bcd data output pin. multiplexed bcd outputs contain three full digits of information during digit select ds 2 ,ds 3 ,ds 4 . 22 26 q 2 during ds 1 , the 1/2 digit, overrange, underrange and polarity information is available. 23 27 q 3 refer to the truth table 4-1. 24 28 v dd positive power supply. this is the most positive power supply pin. 1ncnotused. ? 8 nc not used. ?15ncnotused. ?22ncnotused. table 2-1: pin function table (continued) pin no. (24-pin pdip) (24-pin cerdip) (24-pin soic) pin no. (28-pin plcc) symbol description
? 2002 microchip technology inc. ds21394b-page 7 tc14433/a 3.0 detailed description the tc14433 cmos ic becomes a modified dual- slope a/d with a minimum of external components. this ic has the customary cmos digital logic circuitry, as well as cmos analog circuitry. it provides the user with digital functions such as (counters, latches, multiplexers), and analog functions such as (operational amplifiers and comparators) on a single chip. refer to the functional block diagram, figure 3-3 features of the tc14433/a include auto-zero, high input impedances and auto-polarity. low power consumption and a wide range of power supply volt- ages are also advantages of this cmos device. the system's auto-zero function compensates for the offset voltage of the internal amplifiers and comparators. in this "ratiometric system," the output reading is the ratio of the unknown voltage to the reference voltage, where a ratio of 1 is equal to the maximum count of 1999. it takes approximately 16,000 clock periods to complete one conversion cycle. each conversion cycle may be divided into 6 segments. figure 3-1 shows the conver- sion cycle in 6 segments for both positive and negative inputs. figure 3-1: integrator waveforms at pin 6 segment 1 - the offset capacitor (c o ), which compen- sates for the input offset voltages of the buffer and inte- grator amplifiers, is charged during this period. however, the integrator capacitor is shorted. this segment requires 4000 clock periods. segment 2 - during this segment, the integrator output decreases to the comparator threshold voltage. at this time, a number of counts equivalent to the input offset voltage of the comparator is stored in the offset latches for later use in the auto-zero process. the time for this segment is variable and less than 800 clock periods. segment 3 - this segment of the conversion cycle is the same as segment 1. segment 4 - segment 4 is an up going ramp cycle with the unknown input voltage (v x as the input to the integrator. figure 4-2 shows the equivalent configuration of the analog section of the tc14433. the actual configuration of the analog section is dependent upon the polarity of the input voltage during the previous conversion cycle. figure 3-2: equivalent circuit diagrams of the analog section during segment 4 of the timing cycle segment 5 - this segment is a down-going ramp period with the reference voltage as the input to the integrator. segment 5 of the conversion cycle has a time equal to the number of counts stored in the offset storage latches during segment 2. as a result, the sys- tem zeros automatically. segment 6 - this is an extension of segment 5. the time period for this portion is 4000 clock periods. the results of the a/d conversion cycle are determined in this portion of the conversion cycle. start 1 2 3 4 5 6 typical positive input voltage typical negative input voltage time segment number end v x v x c 1 comparator r 1 buffer integrator + ? + ? + ? v x
tc14433/a ds21394b-page 8 ? 2002 microchip technology inc. figure 3-3: functional block diagram latches 1's 10's 100's 1,000's clock r c control logic cmos analog subsystem display update 9 du end of conversion eoc 14 r 1 r 1 /c c 1 456 co 1 co 2 78 2 1 3 v ref v ag v x reference voltage analog ground analog input offset polarity detect 10 clk 1 11 clk 0 or overrange multiplexer tc14433/a 20-23 16 -19 ds 1 ? ds 4 digit strobe q ? q3 bdc data inte g rator 15 overflow v dd = pin 24 v ss = pin 13 v ee = pin 12
? 2002 microchip technology inc. ds21394b-page 9 tc14433/a 4.0 typical applications the typical application circuit is an example of a 3-1/2 digit voltmeter using the tc14433 with common- anode displays. this system requires a 2.5v reference. full scale may be adjusted to 1.999v or 199.9 mv. input overrange is indicated by flashing a display. this display uses leds with common anode digit lines. power supply for this system is shown as a dual 5v supply; however, the tc14433 will operate over a wide voltage range the circuit in figure 4-1 shows a 3-1/2 digit lcd voltmeter. the 14024b provides the low frequency square wave signal drive to the lcd backplane. dual power supplies are shown here; however, one supply maybeusedwhenv ss isconnectedtov ee .inthis case, v ag must be at least 2.8v above v ee . when only segments b and c of the decoder are con- nected to the 1/2 digit of the display, 4, 0, 7 and 3 appear as 1. the overrange indication (q 3 = 0 and q 0 =1)occurs when the count is greater than 1999; (e.g., 1.999v for a reference of 2v) the underrange indication, useful for auto-ranging circuits, occurs when the count is less than 180; (e.g., 0.180v for a reference of 2v). table 4-1: truth table figure 4-2 is an example of a 3-1/2 digit led voltmeter with a minimum of external components, (only 11 additional components). in this circuit, the 14511b provides the segment drive and the 75492 or 1413 provides sink for digit current. display is blanked during the overrange condition. note: if the most significant digit is connected to a display other than a "1" only, such as a full digit display, segments other than b and c must be disconnected. the bcd to 7-segment decoder must blank on bcd inputs 1010 to 1111. see table 4-1 coded condition of msd q 3 q 2 q 1 q 0 bdc to 7-segment decoding +0 1110 blank blank blank blank -0 1010 +0ur 1111 -0ur 1011 +1 01004?1 0?1 7?1 3?1 hook up only segments b and c to msd -1 0000 +1or 0111 -1or 0011 note 1: q 3 - 1/2 digit, low for "1", high for "0". q 2 - polarity: "1" = positive, "0" = negative. q 0 - out of range condition exists if q 0 =1. when used in conjunction with q 3 ,thetypeof out of range condition is indicated; i.e., q 3 =0 or or q 3 =1 ur.
tc14433/a ds21394b-page 10 ? 2002 microchip technology inc. figure 4-1: 3-1/2 digit voltmeter with lcd display c0 1 c0 2 r c r c r 1 v x v ag v ref v dd v ss v ee eoe du 14013b ds 4 ds 3 ds 2 ds 1 q 0 q 1 q 2 q 3 300k 470k -v -v 14013b +v +v 14543b +v 14070b 1/4 1/2 digit plus sign minus sign 14070b 1/4 1/4 14070b -v 14024b c r +v d c rr d c rr +v -v tc14433 mcp1525 v in v + v out v ss 1 f 20k 0.1 f 0.1 f r 1 /c 1 c 1 q q q q g f e d c b a bi d c b a ph ld 14543b +v -v g f e d c b a bi d c b a ph ld +v 14543b -v g f e d c b a bi d c b a ph ld
? 2002 microchip technology inc. ds21394b-page 11 tc14433/a figure 4-2: 3-1/2 digit led voltmeter with low component count using common cathode displays figure 4-3: alternate oscillator circuits clk1 clk0 or tc14433 input v x 300k resitor network or individual resistor* r +5v minus control +5v r m common cathode led displa y 75492 or 1413* digit drivers v ee* * (minus) alternate overrange circuit with separated led +5v or 1/6 1/7 1413 75492 r r or b1 a b c d lt le i4511b r dp v in +5v v out v ss 1 f 20k mcp1525 470k 0.1 f 0.1 f c0 1 c0 2 r 1 r 1 /c c 1 v x v ag d u eoe v ref v ss v ss v dd v dd v ee q 0 q 1 q 2 ds 4 ds 3 ds 2 ds 1 a b c d e f g note 1: for v ref = 2000v; v: 1.999v full scale. 2: for v ref = 200mv; v: 199.9mv full scale (change 470k to r = 27k and decimal point position. 3: peak digit current for an eight displayed is 7 times the segment current: *to increase segment current capability, add two 75491 ics between 14511b and resistor network. the use of the 1413 as digit driver increases digit current capability over the 75492. **v can range between -2.8v and -11v. (b) lc oscillator circuit 10 l c 11 c for l = 5mh and c = 0.01 f, f ? 32khz 10pf < c 1 and c 2 < 200pf tc14433 tc14433 clk 1 c 1 c 2 clk 0 clk 1 clk 0 11 10 18m 47k (a) crystal oscillator circuit f = 1 2 2/lc
tc14433/a ds21394b-page 12 ? 2002 microchip technology inc. figure 4-4: digit select timing diagram eoc 1/2 clock cycle 18 clock cycles 2 clock cycles 16,400 clock cycles between eoc pulses ds 1 1/2 digit (msd) ds 2 ds 3 ds 4 lcd
? 2002 microchip technology inc. ds21394b-page 13 tc14433/a 5.0 typical characteristics note: the graphs and tables provided following this note are a statistical summary based on a limited number of samples and are provided for informational purposes only. the performance characteristics listed herein are not tested or guaranteed. in some graphs or tables, the data presented may be outside the specified operating range (e.g., outside specified power supply range) and therefore outside the warranted range. rollover error (in lsd) at full scale (pluse count less minus count) -3 -2 -1 0 1 -4 -3 -2 -1 typical rollover error vs. power supply skew (v dd i-iv ee i) - supply voltage skew (v) 01 234 2 3 4 note: rollover error is the difference in output reading for the same analog input switched from positive to negative. 0 1 2 3 4 5 01234 5 -40 c +25 c +85 c typical n-channel sink current at v dd ? v ss = 5 volts i d - sink current (ma) v ds - drain to source voltage (v dc ) 1m 10k 10k ? 100k ? 1m ? 100k clock frequency 16,400 1.5% conversion rate = typical clock frequency vs. resistor (r c ) i clk - clock frequency (hz) r c - clock frequency resistor note: 5% typical variation over supply voltage range of 4.5v to 8v clock frequency 80 multiplex rate = typical quiescent power supply current vs.temp. i q - quiescent current (ma) t a - temperature ( c) 0 1 2 3 4 -40 -20 0 20 40 60 80 10 0 v ee = -8v v dd = +8v v ee = -5v v dd = +5v 0 -1 -2 -3 0-1-2-3-4-5 typical p-channel sink current at v dd ? v ss = 5 volts i d - sink current (ma) v ds - drain to source voltage (v dc ) -40 c +25 c +85 c 4 3 2 1 0 -1 -2 -3 -4 -40 -20 0 20 40 60 80 normalized at 25 c 5v supply 8v supply i clk - clock frequency (% change) typical % change fo clock frequency vs. temp. clock frequency 16,400 1.5% conversion rate = clock frequency 80 multiplex rate = t a - temperature ( c)
tc14433/a ds21394b-page 14 ? 2002 microchip technology inc. 6.0 packaging information 6.1 package marking information package marking data not available at this time. 6.2 taping form component taping orientation for 24-pin soic (wide) devices pin 1 user direction of feed standard reel component orientation for tr suffix device w p package carrier width (w) pitch (p) part per full reel reel size 24-pin soic (w) 24 mm 12 mm 1000 13 in carrier tape, number of components per reel and reel size component taping orientation for 28-pin plcc devices standard reel component orientation for tr suffix device user direction of feed w p package carrier width (w) pitch (p) part per full reel reel size 28-pin plcc 24 mm 16 mm 750 13 in carrier tape, number of components per reel and reel size pin 1
? 2002 microchip technology inc. ds21394b-page 15 tc14433/a 6.3 package dimensions 24-pin pdip (wide) dimensions: inches (mm) 1.270 (32.26) 1.240 (31.50) .555 (14.10) .530 (13.46) .040 (1.02) .020 (0.51) .200 (5.08) .140 (3.56) .022 (0.56) .015 (0.38) .110 (2.79) .090 (2.29) .070 (1.78) .045 (1.14) pin 1 .150 (3.81) .115 (2.92) .015 (0.38) .008 (0.20) 3 min. .700 (17.78) .610 (15.50) .610 (15.49) .590 (14.99) 24-pin cerdip (wide) dimensions: inches (mm ) .098 (2.49) max. .540 (13.72) .510 (12.95) 1.270 (32.26) 1.240 (31.50) pin 1 .210 (5.33) .170 (4.32) .020 (0.51) .016 (0.41) .065 (1.65) .045 (1.14) .110 (2.79) .090 (2.29) .060 (1.52) .020 (0.51) .015 (0.38) .008 (0.20) .620 (15.75) .590 (15.00) .200 (5.08) .125 (3.18) .150 (3.81) min. .030 (0.76) min. 3 min. .700 (17.78) .620 (15.75)
tc14433/a ds21394b-page 16 ? 2002 microchip technology inc. package dimensions (continued) 8 max. 24-pin soic (wide) .299 (7.59) .291 (7.40) .012 (0.30) .004 (0.10) .013 (0.33) .009 (0.23) .615 (15.62) .597 (15.16) .019 (0.48) .014 (0.36) .050 (1.27) .016 (0.40) .050 (1.27) typ. .419 (10.65) .398 (10.10) .104 (2.64) .097 (2.46) pin 1 dimensions: inches (mm) 28-pin plcc dimensions: inches (mm) .456 (11.58) .450 (11.43) .495 (12.58) .485 (12.32) .456 (11.58) .450 (11.43) .495 (12.58) .485 (12.32) .050 (1.27) typ. pin 1 .430 (10.92) .390 (9.91) .021 (0.53) .013 (0.33) .032 (0.81) .026 (0.66) .180 (4.57) .165 (4.19) .120 (3.05) .090 (2.29) .020 (0.51) min.
? 2002 microchip technology inc. ds21394b-page 17 tc14433/a sales and support data sheets products supported by a preliminary data sheet may have an errata sheet describing minor operational differences and recom- mended workarounds. to determine if an errata sheet exists for a particular device, please contact one of the following: 1. your local microchip sales office 2. the microchip corporate literature center u.s. fax: (480) 792-7277 3. the microchip worldwide site (www.microchip.com) please specify which device, revision of silicon and data sheet (include literature #) you are using. new customer notification system register on our web site (www.microchip.com/cn) to receive the most current information on our products.
tc14433/a ds21394b-page 18 ? 2002 microchip technology inc. notes:
? 2002 microchip technology inc. ds21394b-page 19 tc14433/a information contained in this publication regarding device applications and the like is intended through suggestion only and may be superseded by updates. it is your responsibility to ensure that your application meets with your specifications. no representation or warranty is given and no liability is assumed by microchip technology incorporated with respect to the accuracy or use of such information, or infringement of patents or other intellectual property rights arising from such use or otherwise. use of microchip?s products as critical com- ponents in life support systems is not authorized except with express written approval by microchip. no licenses are con- veyed, implicitly or otherwise, under any intellectual property rights. trademarks the microchip name and logo, the microchip logo, filterlab, k ee l oq ,microid, mplab,pic,picmicro,picmaster, picstart, pro mate, seeval and the embedded control solutions company are registered trademarks of microchip tech- nology incorporated in the u.s.a. and other countries. dspic, economonitor, fansense, flexrom, fuzzylab, in-circuit serial programming, icsp, icepic, microport, migratable memory, mpasm, mplib, mplink, mpsim, mxdev, mxlab, picc, picdem, picdem.net, rfpic, select mode and total endurance are trademarks of microchip technology incorporated in the u.s.a. serialized quick turn programming (sqtp) is a service mark of microchip technology incorporated in the u.s.a. all other trademarks mentioned herein are property of their respective companies. ? 2002, microchip technology incorporated, printed in the u.s.a., all rights reserved. printed on recycled paper. microchip received qs-9000 quality system certification for its worldwide headquarters, design and wafer fabrication facilities in chandler and tempe, arizona in july 1999 and mountain view, california in march 2002. the company?s quality system processes and procedures are qs-9000 compliant for its picmicro ? 8-bit mcus, k ee l oq ? code hopping devices, serial eeproms, microperipherals, non-volatile memory and analog products. in addition, microchip?s quality system for the design and manufacture of development systems is iso 9001 certified.
ds21394b-page 20 ? 2002 microchip technology inc. americas corporate office 2355 west chandler blvd. chandler, az 85224-6199 tel: 480-792-7200 fax: 480-792-7277 technical support: 480-792-7627 web address: http://www.microchip.com rocky mountain 2355 west chandler blvd. chandler, az 85224-6199 tel: 480-792-7966 fax: 480-792-7456 atlanta 500 sugar mill road, suite 200b atlanta, ga 30350 tel: 770-640-0034 fax: 770-640-0307 boston 2 lan drive, suite 120 westford, ma 01886 tel: 978-692-3848 fax: 978-692-3821 chicago 333 pierce road, suite 180 itasca, il 60143 tel: 630-285-0071 fax: 630-285-0075 dallas 4570 westgrove drive, suite 160 addison, tx 75001 tel: 972-818-7423 fax: 972-818-2924 detroit tri-atria office building 32255 northwestern highway, suite 190 farmington hills, mi 48334 tel: 248-538-2250 fax: 248-538-2260 kokomo 2767 s. albright road kokomo, indiana 46902 tel: 765-864-8360 fax: 765-864-8387 los angeles 18201 von karman, suite 1090 irvine, ca 92612 tel: 949-263-1888 fax: 949-263-1338 new york 150 motor parkway, suite 202 hauppauge, ny 11788 tel: 631-273-5305 fax: 631-273-5335 san jose microchip technology inc. 2107 north first street, suite 590 san jose, ca 95131 tel: 408-436-7950 fax: 408-436-7955 toronto 6285 northam drive, suite 108 mississauga, ontario l4v 1x5, canada tel: 905-673-0699 fax: 905-673-6509 asia/pacific australia microchip technology australia pty ltd suite 22, 41 rawson street epping 2121, nsw australia tel: 61-2-9868-6733 fax: 61-2-9868-6755 china - beijing microchip technology consulting (shanghai) co., ltd., beijing liaison office unit 915 bei hai wan tai bldg. no. 6 chaoyangmen beidajie beijing, 100027, no. china tel: 86-10-85282100 fax: 86-10-85282104 china - chengdu microchip technology consulting (shanghai) co., ltd., chengdu liaison office rm. 2401, 24th floor, ming xing financial tower no. 88 tidu street chengdu 610016, china tel: 86-28-86766200 fax: 86-28-86766599 china - fuzhou microchip technology consulting (shanghai) co., ltd., fuzhou liaison office unit 28f, world trade plaza no. 71 wusi road fuzhou 350001, china tel: 86-591-7503506 fax: 86-591-7503521 china - shanghai microchip technology consulting (shanghai) co., ltd. room 701, bldg. b far east international plaza no. 317 xian xia road shanghai, 200051 tel: 86-21-6275-5700 fax: 86-21-6275-5060 china - shenzhen microchip technology consulting (shanghai) co., ltd., shenzhen liaison office rm. 1315, 13/f, shenzhen kerry centre, renminnan lu shenzhen 518001, china tel: 86-755-2350361 fax: 86-755-2366086 china - hong kong sar microchip technology hongkong ltd. unit 901-6, tower 2, metroplaza 223 hing fong road kwai fong, n.t., hong kong tel: 852-2401-1200 fax: 852-2401-3431 india microchip technology inc. india liaison office divyasree chambers 1 floor, wing a (a3/a4) no. 11, o?shaugnessey road bangalore, 560 025, india tel: 91-80-2290061 fax: 91-80-2290062 japan microchip technology japan k.k. benex s-1 6f 3-18-20, shinyokohama kohoku-ku, yokohama-shi kanagawa, 222-0033, japan tel: 81-45-471- 6166 fax: 81-45-471-6122 korea microchip technology korea 168-1, youngbo bldg. 3 floor samsung-dong, kangnam-ku seoul, korea 135-882 tel: 82-2-554-7200 fax: 82-2-558-5934 singapore microchip technology singapore pte ltd. 200 middle road #07-02 prime centre singapore, 188980 tel: 65-6334-8870 fax: 65-6334-8850 ta iw a n microchip technology taiwan 11f-3, no. 207 tung hua north road taipei, 105, taiwan tel: 886-2-2717-7175 fax: 886-2-2545-0139 europe denmark microchip technology nordic aps regus business centre lautrup hoj 1-3 ballerup dk-2750 denmark tel: 45 4420 9895 fax: 45 4420 9910 france microchip technology sarl parc d?activite du moulin de massy 43 rue du saule trapu batiment a - ler etage 91300 massy, france tel: 33-1-69-53-63-20 fax: 33-1-69-30-90-79 germany microchip technology gmbh gustav-heinemann ring 125 d-81739 munich, germany tel: 49-89-627-144 0 fax: 49-89-627-144-44 italy microchip technology srl centro direzionale colleoni palazzo taurus 1 v. le colleoni 1 20041 agrate brianza milan, italy tel: 39-039-65791-1 fax: 39-039-6899883 united kingdom microchip ltd. 505 eskdale road winnersh triangle wokingham berkshire, england rg41 5tu tel: 44 118 921 5869 fax: 44-118 921-5820 05/01/02 *ds21394b* w orldwide s ales and s ervice

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