TC14433/A 3-1/2 Digit, Analog-to-Digital Converter Features: • • • • • • • • • • Package Type Accuracy: ±0.05% of Reading ±1 Count Two Voltage Ranges: 1.999V and 199.9 mV Up to 25 Conversions Per Second ZIN > 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 24-Pin PDIP (Wide) 24-Pin CERDIP (Wide) 24-Pin SOIC (Wide) VAG 1 24 VDD VREF 2 23 Q3 VX 3 22 Q2 R1 4 21 Q1 R1/C1 5 20 Q0 TC14433/A C1 6 19 DS1 Applications: CO1 7 18 DS2 • • • • • • • CO2 8 17 DS3 9 16 DS4 Portable Instruments Digital Voltmeters Digital Panel Meters Digital Scales Digital Thermometers Remote A/D Sensing Systems MPU Systems DU CLK1 10 15 OR CLK0 11 14 EOC VEE 12 13 VSS 28-Pin PLCC TC14433AEPG 24-Pin PDIP (Wide) 24-Pin SOIC (Wide) 0°C to +70°C 24-Pin CERDIP (Wide) -40°C to +85°C TC14433ELI 28-Pin PLCC -40°C to +85°C TC14433EPG 24-Pin PDIP (Wide) -40°C to +85°C 28 27 26 R1 5 25 Q1 -40°C to +85°C R1/C1 6 24 Q0 -40°C to +85°C C1 7 23 DS1 TC14433/A NC 8 22 NC CO1 9 21 DS2 CO2 10 20 DS DU 11 19 DS4 3 2: OR EOC NC VSS VEE 12 13 14 15 16 17 18 Note 1: © 2006 Microchip Technology Inc. 1 CLK0 TC14433EJG 2 CLK1 TC14433COG 3 Q2 TC14433AELI 4 Q3 -40°C to +85°C NC 24-Pin CERDIP (Wide) VAG TC14433AEJG VREF Package VX Temperature Range Part Number VDD 28-Pin PLCC Device Selection Table NC = No internal connection (In 28-Pin PLCC). 24-Pin SOIC (Wide) package, only for TC14433 device. DS21394C-page 1 TC14433/A General Description 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 4 mW, approximately onehalf that of the industry standard TC14433. 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 TC14433/A is available in 24-Pin PDIP, 24-Pin CERDIP, 24-Pin SOIC (TC14433 device only), and 28-Pin PLCC packages. Typical Application MCP1525 +5V 20k VOUT VIN 1 μF VSS 1 μF -5V +5V 0.1 300k RC VX 11 10 2 12 24 23 22 21 20 4 5 TC14433 13 6 1 3 1 R 1* 0.1 μF** 0.1 μF** 7 8 -5V -5V 14013B DS4 DS3 DS2 DS1 Segment Resistors 150Ω (7) 9 10 11 12 13 4543B 14 15 8 6 7 9 14 15 19 18 17 16 7 6 5 4 3 2 1 10 11 12 13 14 15 16 1413 -5V -5V -5V 6 5 S 1 Q 2 3 D C RQ 4 8 9 D S Q 13 11 C Q 12 R 710 14 -5V +5V 16 4 2 3 5 *R1 = 470 kΩ for 2V Range R1 = 27 kΩ for 200 mV Range **Mylar Capacitor DS21394C-page 2 +5V 0.1 μF +5V Minus Sign f g e d c b a 200Ω MPS-A12 Plus Sign -5V 110Ω 51k Common Anode Led +5V Display 50 μF 0.1 μF MPS-A12 (4) -5V © 2006 Microchip Technology Inc. TC14433/A 1.0 ELECTRICAL CHARACTERISTICS *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. Absolute Maximum Ratings* Supply Voltage (VDD – VEE) ................... -0.5V to +18V Voltage on Any Pin: Reference to VEE .....................-0.5V to (VDD + 0.5) DC Current, Any Pin: ....................................... ±10 mA Power Dissipation (TA ≤ 70°C): Plastic PLCC ................................................. 1.0W Plastic PDIP.................................................. 940W SOIC ............................................................. 940W CERDIP ....................................................... 1.45W Operating Temperature Range ............... 0°C to +70°C Storage Temperature Range.............. -65°C to +160°C TABLE 1-1: TC14433/A ELECTRICAL SPECIFICATIONS Electrical Characteristics: VDD = +5V, VEE = -5V, C1 = 0.1 μF, (Mylar), C0 = 0.1 μF, RC = 300 kΩ, R1 = 470 kΩ @ VREF = 2V, R1 = 27 kΩ @ VREF = 200 mV, TA = 25°C, unless otherwise specified. Parameter Min Typ Max Min Typ Max SYE Rollover Error (Positive) and Negative Full Scale Symmetry -1 — +1 — — — Count 200 mV Full Scale s VIN -VIN = +VIN NL Linearity Output Reading (Note 1) -0.05 +0.05 +0.05 — — — %rdg VREF = 2V -1 count — +1 count — — — %rdg VREF = 200 mV SOR Stability Output Reading (Note 2) — — 2 — — — LSD VX = 1.99V, VREF = 2V — — 3 — — — LSD VX = 199 mV, VREF = 200 mV VX = 0V, VREF = 2V Symbol Units Test Conditions Analog Input ZOR Zero Output Reading — 0 0 — — — LSD IIN Bias Current: Analog Input Reference Input Analog Ground — ±20 ±100 — — — pA — ±20 ±100 — — — pA — ±20 ±100 — — — pA — 65 — — — — dB CMRR Common mode Rejection Note 1: 2: 3: VX = 1.4V, VREF = 2V, FOC = 32 kHz 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. The LSD stability for 200 mV scale is defined as the range that the LSD will occupy 95% of the time. Pin numbers refer to 24-pin PDIP. © 2006 Microchip Technology Inc. DS21394C-page 3 TC14433/A TABLE 1-1: TC14433/A ELECTRICAL SPECIFICATIONS (CONTINUED) Electrical Characteristics: VDD = +5V, VEE = -5V, C1 = 0.1 μF, (Mylar), C0 = 0.1 μF, RC = 300 kΩ, R1 = 470 kΩ @ VREF = 2V, R1 = 27 kΩ @ VREF = 200 mV, TA = 25°C, unless otherwise specified. Symbol Parameter Min Typ Max Min Typ Max Units Test Conditions — 0 0.05 — — 0.05 V VSS = 0V, “0” Level — -5 -4.95 — — -4.95 V VSS = -5V, “0” Level 4.95 5 — 4.95 — — V VSS = 0V, “1” Level 4.95 5 — 4.95 — — V VSS = -5V, “1” Level -0.2 -0.36 — -0.14 — — mA VSS = 0V, VOH = 4.6V Source - 0.5 -0.9 — -0.35 — — mA VSS = -5V, VOH = 5V Source 0.51 0.88 — 0.36 — — mA VSS = 0V, VOL = 0.4V Sink 1.3 2.25 — 0.9 — — mA VSS = -5V, VOL = -4.5V Sink RC = 300 kΩ Digital VOL Output Voltage (Pins 14 to 23) (Note 3) Output Voltage (Pins 14 to 23) (Note 3) VOH Output Current (Pins 14 to 23) IOH Output Current (Pins 14 to 23) IOL fCLK Clock Frequency — 66 — — — — kHz IDU Input Current -DU — ±0.00 001 ±0.3 — — ±1 μA Power IQ Quiescent Current: 14433A: Quiescent Current: 14433: PSRR Supply Rejection Note 1: 2: 3: — — — — — — — VDD to VEE, ISS = 0 — 0.4 2 — — 3.7 mA VDD = 5, VEE = -5 — 1.4 4 — — 7.4 mA VDD = 8, VEE = -8 — — — — — — — VDD to VEE, ISS = 0 — 0.9 2 — — 3.7 mA VDD = 5, VEE = -5 — 1.8 4 — — 7.4 mA VDD = 8, VEE = -8 — 0.5 — — — — mV/V VDD to VEE, ISS = 0, VREF = 2V, VDD = 5, VEE = -5 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. The LSD stability for 200 mV scale is defined as the range that the LSD will occupy 95% of the time. Pin numbers refer to 24-pin PDIP. DS21394C-page 4 © 2006 Microchip Technology Inc. TC14433/A 2.0 PIN DESCRIPTIONS The descriptions of the pins are listed in Table 2-1. TABLE 2-1: PIN FUNCTION TABLE Pin No. Pin No. (24-Pin PDIP) (28-Pin (24-Pin CERDIP) PLCC) (24-Pin SOIC) Symbol Description 1 2 VAG This is the analog ground. It has a high input impedance. The pin determines the reference level for the unknown input voltage (VX) and the reference voltage (VREF). 2 3 VREF Reference voltage – Full scale output is equal to the voltage applied to VREF. Therefore, full scale voltage of 1.999V requires 2V reference and 199.9 mV full scale requires a 200 mV reference. VREF functions as system reset also. When switched to VEE, the system is reset to the beginning of the conversion cycle. 3 4 VX The unknown input voltage (VX) is measured as a ratio of the reference voltage (VREF) in a ratiometric A/D conversion. 4 5 R1 This pin is for external components used for the integration function in the dual slope conversion. Typical values are 0.1 μF (Mylar) capacitor for C1. 5 6 R1/C1 6 7 C1 7 9 CO1 These pins are used for connecting the offset correction capacitor. The recommended value is 0.1 μF. 8 10 CO2 These pins are used for connecting the offset correction capacitor. The recommended value is 0.1 μF. 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 VSS. 10 12 CLK1 Clock input pins. The TC14433 has its own oscillator system clock. Connecting a single resistor between CLK1 and CLK0 sets the clock frequency. 11 13 CLK0 A crystal or OC circuit may be inserted in lieu of a resistor for improved CLK1, the clock input, can be driven from an external clock source, which need only have standard CMOS output drive. This pin is referenced to VEE for external clock inputs. A 300 kΩ resistor yields a clock frequency of about 66 kHz. See Section 3.0 “Typical Characteristics”. (Also see Figure for alternate circuits.) 12 14 VEE Negative power current. Connection pin for the most negative supply. Please note the current for the output drive circuit is returned through VSS. Typical supply current is 0.8 mA. 13 16 VSS 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 VDD. If connected to VEE, the output swing is from VEE to VDD. The recommended operating range for VSS is between the VDD -3 volts and VEE. 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. © 2006 Microchip Technology Inc. R1 = 470 kΩ (resistor) for 2V full scale. R1 = 27 kΩ (resistor) for 200 mV full scale. Clock frequency of 66 kHz gives 250 msec conversion time. DS21394C-page 5 TC14433/A TABLE 2-1: PIN FUNCTION TABLE (CONTINUED) Pin No. Pin No. (24-Pin PDIP) (28-Pin (24-Pin CERDIP) PLCC) (24-Pin SOIC) Symbol Description 15 18 OR Overrange pin. Normally this pin is set high. When VX exceeds VREF the OR is low. 16 19 DS4 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 DS3 The remaining digits turn on in sequence from MSD to LSD. 18 21 DS2 To ensure that the BCD data has settled, an inter digit blanking time of two clock periods is included. 19 23 DS1 Clock frequency divided by 80 equals multiplex rate. For example, a system clock of 60 kHz gives a multiplex rate of 0.8 kHz. 20 24 Q0 See Figure for digit select timing diagram. 21 25 Q1 BCD data output pin. Multiplexed BCD outputs contain three full digits of information during digit select DS2, DS3, DS4. 22 26 Q2 During DS1, the 1/2 digit, overrange, underrange and polarity information is available. 23 27 Q3 Refer to the Truth Table 5-1. 24 28 VDD Positive power supply. This is the most positive power supply pin. 1 NC Not Used. — 8 NC Not Used. — 15 NC Not Used. — 22 NC Not Used. DS21394C-page 6 © 2006 Microchip Technology Inc. TC14433/A 3.0 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. Typical Quiescent Power Supply Current vs.Temp. 4 IQ - QUIESCENT CURRENT (mA) ROLLOVER ERROR (IN LSD) AT FULL SCALE (PLUSE COUNT LESS MINUS COUNT) Typical Rollover Error vs. Power Supply Skew 4 3 2 1 0 -1 -2 Note: Rollover Error is the Difference in Output Reading for the same Analog Input Switched from Positive to Negative. -3 -4 -3 -2 -1 0 2 1 3 3 VEE = -8V VDD = +8V 2 1 VEE = -5V VDD = +5V -40 0 4 -20 0 20 40 60 80 100 TA - TEMPERATURE (°C) (VDD I-IVEE I) - SUPPLY VOLTAGE SKEW (V) Typical P-Channel Sink Current at VDD – VSS = 5 Volts Typical N-Channel Sink Current at VDD – VSS = 5 Volts 5 ID - SINK CURRENT (mA) ID - SINK CURRENT (mA) -3 4 -40°C 3 +25°C 2 +85°C 1 -40°C -2 +25°C +85°C -1 0 0 0 1 2 3 4 0 5 Typical Clock Frequency vs. Resistor (RC) -2 -3 -4 -5 Typical % Change fo Clock Frequency vs. Temp. 4 Note: ±5% Typical Variation over Supply Voltage Range of ±4.5V to ±8V 1M 100k 10k 10kΩ 100kΩ 1MΩ RC - CLOCK FREQUENCY RESISTOR ICLK - CLOCK FREQUENCY (% CHANGE) ICLK - CLOCK FREQUENCY (Hz) -1 VDS - DRAIN TO SOURCE VOLTAGE (VDC) VDS - DRAIN TO SOURCE VOLTAGE (VDC) ±5V Supply 3 2 1 0 ±8V Supply -1 -2 Normalized at 25°C -3 -4 -40 -20 0 20 40 60 80 TA - TEMPERATURE (°C) CONVERSION RATE = CLOCK FREQUENCY ±1.5% 16,400 CONVERSION RATE = CLOCK FREQUENCY ±1.5% 16,400 MULTIPLEX RATE = CLOCK FREQUENCY 80 MULTIPLEX RATE = CLOCK FREQUENCY 80 © 2006 Microchip Technology Inc. DS21394C-page 7 TC14433/A 4.0 DETAILED DESCRIPTION The TC14433 CMOS IC becomes a modified dualslope 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 . Features of the TC14433/A include auto-zero, high input impedances and auto-polarity. Low power consumption and a wide range of power supply voltages 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 shows the conversion cycle in 6 segments for both positive and negative inputs. Segment 1 – The offset capacitor (CO), which compensates for the input offset voltages of the buffer and integrator 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 (VX 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. Buffer – i Start Time 1 Segment Number End 2 3 4 DS21394C-page 8 + R1 Integrator – + Comparator + – 6 VX Typical Positive Input Voltage VX FIGURE 4-1: 5 VX C1 Typical Negative Input Voltage Integrator Waveforms at Pin 6 FIGURE 4-2: 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 system 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. © 2006 Microchip Technology Inc. TC14433/A 20-23 Multiplexer RC 10 11 CLK1 CLK0 Clock Latches 1's 10's Q – Q3 BDC Data DS1 – DS4 Digit Strobe 16 -19 Polarity Detect 100's 1,000's TC14433/A 15 Overflow Control Logic Display Update FIGURE 4-3: End of 9 14 Conversion DU EOC CMOS Analog Subsystem 4 5 R1 R1/C 6 7 8 C1 CO1 CO2 Integrator 2 1 3 OR Overrange VREF Reference Voltage VAG Analog Ground Analog Input VX VDD = Pin 24 VSS = Pin 13 VEE = Pin 12 Offset Functional Block Diagram © 2006 Microchip Technology Inc. DS21394C-page 9 TC14433/A 5.0 TYPICAL APPLICATIONS The Typical Application circuit is an example of a 3-1/2 digit voltmeter using the TC14433 with Commonanode 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 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 may be used when VSS is connected to VEE. In this case, VAG must be at least 2.8V above VEE. 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 5-1). TABLE 5-1: TRUTH TABLE Coded Q Condition 3 of MSD Q Q Q 2 1 0 +0 1 1 1 0 -0 1 0 1 0 +0 UR 1 1 1 1 When only segments b and c of the decoder are connected to the 1/2 digit of the display, 4, 0, 7 and 3 appear as 1. -0 UR 1 0 1 1 +1 0 1 0 0 -1 0 0 0 0 The overrange indication (Q3 = 0 and Q0 = 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). +1 OR 0 1 1 1 -1 OR 0 0 1 1 Note 1: BDC to 7-Segment Decoding Blank Blank Blank Blank 4–1 0–1 7–1 3–1 Hook up only segments b and c to MSD Q3 – 1/2 digit, low for “1”, high for “0”. Q2 – Polarity: “1” = positive, “0” = negative. Q0 – Out of range condition exists if Q0 = 1. When used in conjunction with Q3, the type of out of range condition is indicated; i.e., Q3 = 0 → OR or Q3 = 1 → UR. Figure 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. DS21394C-page 10 © 2006 Microchip Technology Inc. TC14433/A 0.1 μF V+ MCP1525 VIN VOUT VSS 20k 1 μF 470k 0.1 μF -V R1/C 1C1 DS4 DS3 VAG DS2 DS1 TC14433 Q0 Q1 VREF Q2 Q3 VDD VSS VEE EOE DU RC RC C01 C02 R1 VX +V -V C R 14024B 14070B 1/4 +V 300k 14013B 14070B 1/4 1/2 Digit D Q C R RQ 14013B D Q C R RQ Plus Sign -V 1/4 14070B Minus Sign +V FIGURE 5-1: BI D C B A Ph LD 14543B g f e d c b a BI D C B A Ph LD +V 14543B -V g f e d c b a +V BI D C B A Ph LD +V -V 14543B g f e d c b a +V -V 3-1/2 Digit Voltmeter with LCD Display © 2006 Microchip Technology Inc. DS21394C-page 11 TC14433/A 470k 0.1 μF 0.1 μF VX +5V Input MCP1525 VIN VOUT VSS 20k R1 R1/C C1 C01 C02 VX CLK1 VAG CLK0 DU OR Q0 EOE Q1 TC14433 Q2 VREF 1 μF 300k VSS A B1 a B b C I4511B c d D e LT f LE VSS VDD g +5V VDD VEE DS4 DS3 DS2 DS1 OR RDP RM Alternate Overrange Circuit with Separated LED 1/6 75492 OR 1/7 1413 Resitor Network or Individual Resistor* R VEE** (Minus) RR +5V +5V Minus Control Common Cathode Led Display 75492 OR 1413* Digit Drivers Note 1: For VREF = 2000V; V: 1.999V full scale. 2: For VREF = 200 mV; V: 199.9 mV 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. FIGURE 5-2: 3-1/2 Digit LED Voltmeter with Low Component Count Using Common Cathode Display (A) Crystal Oscillator Circuit 10 C1 11 C2 10 CLK1 TC14433 18M (B) LC Oscillator Circuit C 10 pF < C1 and C2 < 200 pF DS21394C-page 12 TC14433 11 CLK0 47k FIGURE 5-3: C L f= 1 2π CLK1 CLK0 2/LC For L = 5 mH and C = 0.01 μF, f ≅ 32 kHz Alternate Oscillator Circuits © 2006 Microchip Technology Inc. TC14433/A EOC 1/2 Clock Cycle ≈ 16,400 Clock Cycles Between EOC Pulses 18 Clock Cycles DS1 1/2 Digit (MSD) 2 Clock Cycles DS2 DS3 DS4 LCD FIGURE 5-4: Digit Select Timing Diagram © 2006 Microchip Technology Inc. DS21394C-page 13 TC14433/A 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 User Direction of Feed Pin 1 W P Standard Reel Component Orientation for 713 Suffix Device Carrier Tape, Number of Components Per Reel and Reel Size Package 24-Pin SOIC (W) Carrier Width (W) Pitch (P) Part Per Full Reel Reel Size 24 mm 12 mm 1000 13 in Component Taping Orientation for 28-Pin PLCC Devices User Direction of Feed Pin 1 W P Standard Reel Component Orientation for 713 Suffix Device Carrier Tape, Number of Components Per Reel and Reel Size Package 28-Pin PLCC DS21394C-page 14 Carrier Width (W) Pitch (P) Part Per Full Reel Reel Size 24 mm 16 mm 750 13 in © 2006 Microchip Technology Inc. TC14433/A 6.3 Package Dimensions 24-Pin PDIP (Wide) Pin 1 .555 (14.10) .530 (13.46) 1.270 (32.26) 1.240 (31.50) .610 (15.49) .590 (14.99) .200 (5.08) .140 (3.56) .040 (1.02) .020 (0.51) .150 (3.81) .115 (2.92) .015 (0.38) .008 (0.20) 3°Min. .700 (17.78) .610 (15.50) .070 (1.78) .045 (1.14) .110 (2.79) .090 (2.29) .022 (0.56) .015 (0.38) Dimensions: inches (mm) 24-Pin CERDIP (Wide) Pin 1 .540 (13.72) .510 (12.95) .030 (0.76) Min. .098 (2.49) Max. 1.270 (32.26) 1.240 (31.50) .620 (15.75) .590 (15.00) .060 (1.52) .020 (0.51) .210 (5.33) .170 (4.32) .200 (5.08) .125 (3.18) .150 (3.81) Min. .110 (2.79) .090 (2.29) .065 (1.65) .045 (1.14) .020 (0.51) .016 (0.41) .015 (0.38) .008 (0.20) 3° Min. .700 (17.78) .620 (15.75) Dimensions: inches (mm) © 2006 Microchip Technology Inc. DS21394C-page 15 TC14433/A Package Dimensions (Continued) 24-Pin SOIC (Wide) Pin 1 .299 (7.59) .419 (10.65) .291 (7.40) .398 (10.10) .615 (15.62) .597 (15.16) .104 (2.64) .097 (2.46) .050 (1.27) Typ. .019 (0.48) .014 (0.36) .012 (0.30) .004 (0.10) 8° Max. .013 (0.33) .009 (0.23) .050 (1.27) .016 (0.40) Dimensions: inches (mm) 28-Pin PLCC Pin 1 .021 (0.53) .013 (0.33) .050 (1.27) Typ. .495 (12.58) .485 (12.32) .456 (11.58) .450 (11.43) .032 (0.81) .026 (0.66) .456 (11.58) .450 (11.43) .495 (12.58) .485 (12.32) .430 (10.92) .390 (9.91) .020 (0.51) Min. .120 (3.05) .090 (2.29) .180 (4.57) .165 (4.19) Dimensions: inches (mm) DS21394C-page 16 © 2006 Microchip Technology Inc. TC14433/A SALES AND SUPPORT Data Sheets Products supported by a preliminary Data Sheet may have an errata sheet describing minor operational differences and recommended workarounds. To determine if an errata sheet exists for a particular device, please contact one of the following: 1. 2. 3. Your local Microchip sales office The Microchip Corporate Literature Center U.S. FAX: (480) 792-7277 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. © 2006 Microchip Technology Inc. DS21394C-page 17 TC14433/A NOTES: DS21394C-page 18 © 2006 Microchip Technology Inc. Note the following details of the code protection feature on Microchip devices: • Microchip products meet the specification contained in their particular Microchip Data Sheet. • Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the intended manner and under normal conditions. • There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our knowledge, require using the Microchip products in a manner outside the operating specifications contained in Microchip’s Data Sheets. Most likely, the person doing so is engaged in theft of intellectual property. • Microchip is willing to work with the customer who is concerned about the integrity of their code. • Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not mean that we are guaranteeing the product as “unbreakable.” Code protection is constantly evolving. We at Microchip are committed to continuously improving the code protection features of our products. Attempts to break Microchip’s code protection feature may be a violation of the Digital Millennium Copyright Act. If such acts allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act. Information contained in this publication regarding device applications and the like is provided only for your convenience and may be superseded by updates. It is your responsibility to ensure that your application meets with your specifications. MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHER EXPRESS OR IMPLIED, WRITTEN OR ORAL, STATUTORY OR OTHERWISE, RELATED TO THE INFORMATION, INCLUDING BUT NOT LIMITED TO ITS CONDITION, QUALITY, PERFORMANCE, MERCHANTABILITY OR FITNESS FOR PURPOSE. Microchip disclaims all liability arising from this information and its use. Use of Microchip’s products as critical components in life support systems is not authorized except with express written approval by Microchip. No licenses are conveyed, implicitly or otherwise, under any Microchip intellectual property rights. Trademarks The Microchip name and logo, the Microchip logo, Accuron, dsPIC, KEELOQ, microID, MPLAB, PIC, PICmicro, PICSTART, PRO MATE, PowerSmart, rfPIC, and SmartShunt are registered trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. AmpLab, FilterLab, Migratable Memory, MXDEV, MXLAB, PICMASTER, SEEVAL, SmartSensor and The Embedded Control Solutions Company are registered trademarks of Microchip Technology Incorporated in the U.S.A. Analog-for-the-Digital Age, Application Maestro, dsPICDEM, dsPICDEM.net, dsPICworks, ECAN, ECONOMONITOR, FanSense, FlexROM, fuzzyLAB, In-Circuit Serial Programming, ICSP, ICEPIC, Linear Active Thermistor, MPASM, MPLIB, MPLINK, MPSIM, PICkit, PICDEM, PICDEM.net, PICLAB, PICtail, PowerCal, PowerInfo, PowerMate, PowerTool, Real ICE, rfLAB, rfPICDEM, Select Mode, Smart Serial, SmartTel, Total Endurance, UNI/O, WiperLock and Zena are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. 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. © 2006, Microchip Technology Incorporated, Printed in the U.S.A., All Rights Reserved. Printed on recycled paper. Microchip received ISO/TS-16949:2002 quality system certification for its worldwide headquarters, design and wafer fabrication facilities in Chandler and Tempe, Arizona and Mountain View, California in October 2003. The Company’s quality system processes and procedures are for its PICmicro® 8-bit MCUs, KEELOQ® code hopping devices, Serial EEPROMs, microperipherals, nonvolatile memory and analog products. In addition, Microchip’s quality system for the design and manufacture of development systems is ISO 9001:2000 certified. © 2006 Microchip Technology Inc. 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