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MOTOROLA

SEMICONDUCTOR TECHNICAL DATA

Order this document by MC14499/D

MC14499 7-Segment LED Display Decoder/Driver with Serial Interface
CMOS
The MC14499 is a 7­segment alphanumeric LED decoder/driver with a serial interface port to provide communication with CMOS microprocessors and microcomputers. This device features NPN output drivers which allow interfacing to common cathode LED displays through external series resistors. · · · · · · High­Current Segment Drivers On­Chip CMOS MPU compatible Input Levels Wide Operating Voltage Range: 4.5 to 6.5 V Operating Temperature Range: 0 to 70°C Drives Four Characters with Decimal Points Also See MC14489
20 1

18 1

P SUFFIX PLASTIC DIP CASE 707

DW SUFFIX SOG PACKAGE CASE 751D

ORDERING INFORMATION
MC14499P MC14499DW Plastic DIP SOG Package

PIN ASSIGNMENTS PLASTIC DIP
d 1 2 3 4 5 6 7 8 9 18 17 16 15 14 13 12 11 10 VDD e f g h CLK ENB I II

BLOCK DIAGRAM
DECIMAL POINT D4 Q1 4 BITS C

c b a DATA OSC IV

DATA CLK D Q 4 BITS C*

D20 Q5 16­BIT SHIFT REGISTER C 4 4 4 4

III C LATCH 2:1 MUX MUX SEGMENT DRIVERS h g f e d c b a I II III IV VSS

C ENB 4 LATCH

SOG PACKAGE
d SEGMENT OUTPUTS c b a DATA OSC CHARACTER SELECTORS IV III VSS NC 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 VDD e f g h CLK ENB I II NC

4

4

4

MULTIPLEXER

B4

A

B

4

SEGMENT DECODER

7

OSC OSCILLATOR DECODER 4 SCANNER BUFFERS

* Transparent Latch

NC = NO CONNECTION

SAME AS IN DL130/D R1

© Motorola, Inc. 1995 MOTOROLA

MC14499 1

ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á Á Á ÁÁÁ Á Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á Á Á ÁÁÁ Á Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á Á Á
MAXIMUM RATINGS* (Voltages referenced to VSS)
Rating Symbol VDD Vin DC Supply Voltage Value Unit V V ­ 0.5 to + 7 Input Voltage, All Inputs ­ 0.5 to VDD + 0.5 ­ 65 to + 150 Storage Temperature Range Tstg °C * Maximum Ratings are those values beyond which damage to the device may occur. Functional operation should be restricted to the limits in the Electrical Characteristics table or Circuit Operation section.

This device contains circuitry to protect the inputs against damage due to high static voltages or electric fields; however, it is advised that normal precautions be taken to avoid application of any voltage higher than maximum rated voltages to this high impedance circuit. For proper operation, it is recommended that Vin and Vout be constrained to the range VSS (Vin or Vout) VDD.

ELECTRICAL CHARACTERISTICS (VDD = 4.5 to 6.5 V)
0°C Characteristic Serial Port Input Voltage Serial Port Input Current (Vin = 0 to VDD) Oscillator Input Voltage Oscillator Input Current `0' Level `1' Level VOSC = 0 VOSC = VDD `0' Level `1' Level Symbol VIL VIH Iin VIL VIH IIL IIH VOH -- -- IOZ IOH IOL IDD -- 6 ­ 0.2 -- 1.1 0.8 100 -- -- 1 -- -- -- 5.5 ­ 0.2 -- 1.0 0.75 50 -- -- 1 -- -- -- 4 ­ 0.1 -- 1.1 0.8 100 -- -- 1 mA µA mA Vout = 0.8 V Vout = 0.5 V Min -- 0.7 x VDD -- Max 0.3 x VDD -- ± 0.1 Min -- 0.7 x VDD -- 25°C Max 0.3 x VDD -- ± 0.1 Min -- 0.7 x VDD -- -- 0.8 x VDD 10 ­ 10 70°C Max 0.3 x VDD -- ± 1.0 0.2 x VDD -- -- -- Unit V µA V µA V

-- 0.25 x VDD -- 0.25 x VDD 0.75 x VDD -- 0.75 x VDD -- -- -- 100 ­ 100 30 ­ 30 80 ­ 80

Segment Driver Voltage Below VDD Iout = 50 mA Iout = 10 mA Segment Driver Off Leakage Vout = 0 Digit Drivers Source (On) Sink (Off) Supply Current Vin = 0, Iout = 0, COSC = 0.015 µF Maximum Power Dissipation

PD

--

500

--

500

--

500

mW

SWITCHING CHARACTERISTICS (VDD = 5 V ± 10%, TA = 0 to 70°C)
Characteristic Clock High Time Clock Low Time Clock Rise Time Clock Fall Time Enable Lead Time Enable Lag Time Data Set­Up Time Data Hold Time Scanner Frequency* OSC/Digit Lead Time OSC/Segment Lead Time Digit Overlap * Scanner Capacitance = 0.022 µF. Figure No. 2 2 2 2 2 2 2 2 4 4 4 4 Symbol tCH tCL tCR tCF tE LEAD tE LAG tD SUP tD HOLD 1/tSCAN tOD tOS tOV Min 2 2 -- -- 200 200 200 1 50 -- -- -- Max -- -- 2 2 -- -- -- -- 300 10 10 5 Unit µs µs µs µs ns ns ns µs Hz µs µs µs

MC14499 2

MOTOROLA

CIRCUIT OPERATION
The circuit accepts a 20­bit input, 16 bits for the four­digit display plus 4 bits for the decimal point -- these latter four bits are optional. The input sequence is the decimal point code followed by the four digits, as shown in Figure 1. In order to enter data the enable input, ENB, must be active low. The sample and shift are accomplished on the falling clock edge, see Figure 2. Data are loaded from the shift register to the latches when ENB goes high. While the shift register is being loaded, the previous data are stored in the latches. If the decimal point is used, the system requires 20 clock pulses to load data; otherwise only 16 are required. CASCADING The circuit may be cascaded in the following manner. If a 1111 word is loaded into the decimal point latch, the output of the shift register is switched to the decimal point driver, see Figure 3. Therefore, to cascade n four­digit display drivers, a set­up is used which loads the 1111 cascading word: 1. ENB = active low. 2. Load 20 bits, the first four bits being 1, with 20 clock pulses. 3. ENB = high, to load the latch. 4. Repeat steps 1 to 3 (n ­ 1) times.

5. (n x 20) bits can be loaded into n circuits, with 1111 as decimal point word to continue the cascading. SCANNER The scanner frequency is determined by an on­chip oscillator, which requires an external frequency­determining capacitor. The capacitor voltage varies between two trigger levels at the oscillator frequency. An external oscillator signal can be used, within the recommended operating range of 200 to 800 Hz. For test purposes this frequency may be increased up to 10 kHz. A divide by four counter provides four non­overlapping scanner waveforms corresponding to the four digits -- see Figure 4. SEGMENT DECODER The code used in these matrix decoders is shown in Figure 5. OUTPUT DRIVERS There are two different drivers: · The segment and decimal point drivers; these are NPN emitter followers with no current limiting devices. · The digit output buffers; these are short­circuit protected CMOS devices. A typical application circuit is shown in Figure 6.

TIME BIT NO. 20 19 18 17 16 15 14 13 12 11 10 SHIFT 9 8 7 6 5 4 3 2 1

DIGIT IV

DIGIT III

DIGIT II

DIGIT IV

DIGIT III

DIGIT II

DIGIT I

DECIMAL POINT

Figure 1. Input Sequence

MOTOROLA

DIGIT I

MSB

MSB

MSB

MSB

LSB

LSB

LSB

LSB

MC14499 3

ENB

tE LEAD CLK C1 tCL tCH C2 CN

tE LAG

DATA tDSUP

D1 tDH

D2

DN

Figure 2a. Serial Input, Positive Clock

ENB

tE LEAD CLK C1 tCL tCH C2 CN

tE LAG

DATA

D1 tSUP

D2 tDH

DN

Figure 2b. Serial Input, Negative Clock

Figure 2. Serial Input

4 DIGIT DATA CLK ENB

7 SEGM h

4 DIGIT DATA 10 k CLK ENB

7 SEGM h

MC14499
(1)

MC14499
(2)

Figure 3. Cascading MC14499s

MC14499 4

MOTOROLA

tOD OSC tSCAN DIGIT I

1/tOSC

DIGIT II

DIGIT III

DIGIT IV tOV SEGMENT OUTPUTS tOS

Figure 4. Scanner Waveforms

0000

1000

0001

1001

0010

1010

0011

1011

0100

1100

0101

1101

0110

1110

DASH

0111

1111

BLANK

Figure 5. Segment Code

MOTOROLA

MC14499 5

VDD

SEGMENT OUTPUTS (7) a b c d e f g h R1 ­ R8

IS

ENB DATA CLK

MC14499 OSC

C

IV III II I GND

.
DIGIT OUTPUTS (4) Q1 Q2 #1 ID #2

.
#3

.
#4

Q3 Q4 R1 ­ R8: C: VDD Typ: IS max: ID max: 36 ­ 82 0.015 µF 5­6V 40 ­ 50 mA 8 IS max

Figure 6. Application Example

MC14499 6

MOTOROLA

PACKAGE DIMENSIONS
P SUFFIX PLASTIC DIP CASE 707­02
NOTES: 1. POSITIONAL TOLERANCE OF LEADS (D), SHALL BE WITHIN 0.25 (0.010) AT MAXIMUM MATERIAL CONDITION, IN RELATION TO SEATING PLANE AND EACH OTHER. 2. DIMENSION L TO CENTER OF LEADS WHEN FORMED PARALLEL. 3. DIMENSION B DOES NOT INCLUDE MOLD FLASH. MILLIMETERS MIN MAX 22.22 23.24 6.10 6.60 3.56 4.57 0.36 0.56 1.27 1.78 2.54 BSC 1.02 1.52 0.20 0.30 2.92 3.43 7.62 BSC 15° 0° 0.51 1.02 INCHES MIN MAX 0.875 0.915 0.240 0.260 0.140 0.180 0.014 0.022 0.050 0.070 0.100 BSC 0.040 0.060 0.008 0.012 0.115 0.135 0.300 BSC 0° 15° 0.020 0.040

18 1

10

B
9

A C L

N F H G D
SEATING PLANE

K M J

DIM A B C D F G H J K L M N

DW SUFFIX SOG PACKAGE CASE 751D­04 ­A­
20 11 NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: MILLIMETER. 3. DIMENSIONS A AND B DO NOT INCLUDE MOLD PROTRUSION. 4. MAXIMUM MOLD PROTRUSION 0.150 (0.006) PER SIDE. 5. DIMENSION D DOES NOT INCLUDE DAMBAR PROTRUSION. ALLOWABLE DAMBAR PROTRUSION SHALL BE 0.13 (0.005) TOTAL IN EXCESS OF D DIMENSION AT MAXIMUM MATERIAL CONDITION. DIM A B C D F G J K M P R MILLIMETERS MIN MAX 12.65 12.95 7.40 7.60 2.35 2.65 0.35 0.49 0.50 0.90 1.27 BSC 0.25 0.32 0.10 0.25 0_ 7_ 10.05 10.55 0.25 0.75 INCHES MIN MAX 0.499 0.510 0.292 0.299 0.093 0.104 0.014 0.019 0.020 0.035 0.050 BSC 0.010 0.012 0.004 0.009 0_ 7_ 0.395 0.415 0.010 0.029

­B­
1 10

10X

P 0.010 (0.25)
M

B

M

20X

D
M

0.010 (0.25)

T A

S

B

J
S

F R C ­T­
18X SEATING PLANE X 45 _

G

K

M

MOTOROLA

MC14499 7

Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation consequential or incidental damages. "Typical" parameters can and do vary in different applications. All operating parameters, including "Typicals" must be validated for each customer application by customer's technical experts. Motorola does not convey any license under its patent rights nor the rights of others. Motorola products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the Motorola product could create a situation where personal injury or death may occur. Should Buyer purchase or use Motorola products for any such unintended or unauthorized application, Buyer shall indemnify and hold Motorola and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that Motorola was negligent regarding the design or manufacture of the part. Motorola and are registered trademarks of Motorola, Inc. Motorola, Inc. is an Equal Opportunity/Affirmative Action Employer.

How to reach us: USA/EUROPE: Motorola Literature Distribution; P.O. Box 20912; Phoenix, Arizona 85036. 1­800­441­2447 MFAX: [email protected] ­ TOUCHTONE (602) 244­6609 INTERNET: http://Design­NET.com

JAPAN: Nippon Motorola Ltd.; Tatsumi­SPD­JLDC, Toshikatsu Otsuki, 6F Seibu­Butsuryu­Center, 3­14­2 Tatsumi Koto­Ku, Tokyo 135, Japan. 03­3521­8315 HONG KONG: Motorola Semiconductors H.K. Ltd.; 8B Tai Ping Industrial Park, 51 Ting Kok Road, Tai Po, N.T., Hong Kong. 852­26629298

MC14499 8



*MC14499/D*

MC14499/D MOTOROLA