2001-04-02 PRODUKTINFORMATION Vi reserverar oss mot fel samt förbehåller oss rätten till ändringar utan föregående meddelande ELFA artikelnr 73-760-07 ICM7211AIPL 73-761-63 ICM7212AMIPL displaydriv
ICM7211, ICM7212 4-Digit, ICM7211 (LCD) and ICM7212 (LED) Display Drivers August 1997 Features ICM7211 (LCD) Description • Four Digit Non-Multiplexed 7 Segment LCD Display Outputs with Backplane Driver The ICM7211 (LCD) and ICM7212 (LED) devices constitute a family of non-multiplexed four-digit seven-segment CMOS display decoder-drivers.
ICM7211, ICM7212 Pinouts ICM7211, ICM7211A (PDIP) TOP VIEW ICM7211M, ICM7211AM (PDIP) TOP VIEW VDD 1 40 d1 VDD 1 40 d1 e1 2 39 c1 e1 2 39 c1 g1 3 38 b1 g1 3 38 b1 f1 4 37 a1 f1 4 37 a1 BP 5 36 OSC BP 5 36 OSC a2 6 35 VSS a2 6 35 VSS b2 7 34 D4 b2 7 34 CHIP SELECT 2 c2 8 33 D3 c2 8 33 CHIP SELECT 1 d2 9 32 D2 d2 9 32 DIGIT ADRESS BIT 2 DIGIT SELECT INPUTS e2 10 31 D1 e2 10 31 DIGIT ADRESS BIT 1 g2 11 30 B3 g2 11 30 B3 f2 12 29 B2 f2 12 29 B2 a3 13 28 B1 a3
ICM7211, ICM7212 (Continued) OSC a1 b1 c1 NC d1 VDD e1 g1 BP f1 ICM7211A (MQFP) TOP VIEW b2 44 43 42 41 40 39 38 37 36 35 34 33 2 32 D4 c2 3 31 D3 d2 4 30 D2 e2 5 29 D1 NC 6 28 NC g2 7 27 B3 a2 VSS 1 24 B0 11 23 12 13 14 15 16 17 18 19 20 21 22 DIGIT SELECT INPUTS DATA INPUTS f4 g4 e4 10 c3 c4 d4 b3 b4 B1 NC B2 25 g3 f3 a4 26 9 e3 8 d3 f2 d3 OSC a1 b1 c1 d1 NC VDD e1 g1 BP f1 ICM7211AM (MQFP) TOP VIEW b2 44 43 42 41 40 39 38 37 36 3
ICM7211, ICM7212 Functional Block Diagrams ICM7211A D4 SEGMENT OUTPUTS D3 SEGMENT OUTPUTS D2 SEGMENT OUTPUTS D1 SEGMENT OUTPUTS 7 WIDE DRIVER 7 WIDE DRIVER 7 WIDE DRIVER 7 WIDE DRIVER 7 WIDE LATCH EN 7 WIDE LATCH EN 7 WIDE LATCH EN 7 WIDE LATCH EN PROGRAMMABLE 4 TO 7 DECODER PROGRAMMABLE 4 TO 7 DECODER PROGRAMMABLE 4 TO 7 DECODER PROGRAMMABLE 4 TO 7 DECODER DATA INPUTS DIGIT SELECT INPUTS OSCILLATOR 19kHz FREE-RUNNING OSCILLATOR INPUT ÷128 BLACKPLANE DRIVER ENABLE BP INPUT/OUTPUT ENABLE
ICM7211, ICM7212 Functional Block Diagrams (Continued) DATA INPUTS 2-BIT DIGIT ADRESS INPUT CHIP SELECT 1 CHIP SELECT 2 D4 SEGMENT OUTPUTS D3 SEGMENT OUTPUTS D2 SEGMENT OUTPUTS D1 SEGMENT OUTPUTS 7 WIDE DRIVER 7 WIDE DRIVER 7 WIDE DRIVER 7 WIDE DRIVER 7 WIDE LATCH EN 7 WIDE LATCH EN 7 WIDE LATCH EN 7 WIDE LATCH EN PROGRAMMABLE 4 TO 7 DECODER PROGRAMMABLE 4 TO 7 DECODER PROGRAMMABLE 4 TO 7 DECODER PROGRAMMABLE 4 TO 7 DECODER 4-BIT LATCH ENABLE 2-BIT LATCH 2 TO 4 DECODER ENABLE ONE SHOT
ICM7211, ICM7212 Absolute Maximum Ratings Thermal Information Supply Voltage (VDD - VSS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.5V Input Voltage (Any Terminal) (Note 1) . . VSS - 0.3V to VDD , + 0.3V Thermal Resistance (Typical, Note 2) θJA (oC/W) PDIP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 MQFP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80 Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . . .
ICM7211, ICM7212 Input Definitions In this table, VDD and VSS are considered to be normal operating input logic levels. Actual input low and high levels are specified under Operating Characteristics. For lowest power consumption, input signals should swing over the full supply.
ICM7211, ICM7212 Typical Performance Curves 30 180 LCD DEVICES, TA = 25oC LCD DEVICES, TEST CIRCUIT DISPLAY BLANK, PIN 36 OPEN 25 150 COSC = 0pF (PIN 36 OPEN) TA = -20oC 120 TA = 25oC ƒBP (Hz) IOP (µA) 20 15 10 COSC = 22pF 90 60 TA = 70oC 5 COSC = 220pF 30 0 1 2 3 4 5 6 1 7 2 3 VSUPP (V) FIGURE 3. ICM7211 OPERATING SUPPLY CURRENT AS A FUNCTION OF SUPPLY VOLTAGE 15 4 VSUPP (V) 5 6 FIGURE 4.
ICM7211, ICM7212 Description Of Operation OSCILLATOR FREQUENCY LCD Devices 128 CYCLES The LCD devices in the family (ICM7211, ICM7211A, ICM7211M, ICM7211AM) provide outputs suitable for driving conventional four-digit, seven-segment LCD displays. These devices include 28 individual segment drivers, backplane driver, and a self-contained oscillator and divider chain to generate the backplane frequency.
ICM7211, ICM7212 elevated temperatures the segment current be limited by use of the brightness input to keep power dissipation within the limits described above. Input Configurations and Output Codes The standard devices in the ICM7211 and ICM7212 family accept a four-bit true binary (i.e., positive level = logical one) input at pins 27 thru 30, least significant bit at pin 27 ascending to the most significant bit at pin 30.
ICM7211, ICM7212 Test Circuit VDD + VSS - 1 VDD 2 40 3 38 4 37 5 BP OSC 36 6 VSS 35 7 8 9 EACH SEGMENT OUTPUT TO BACKPLANE WITH A 200pF CAPACITOR 39 ICM7211AM 10 34 DIGIT/CHIP SELECT INPUTS 11 33 VDD MICROPROCESSOR VERSION VSS MULTIPLEXED VERSION 32 31 30 12 DATA INPUTS 13 29 VDD 28 14 27 15 26 16 25 17 24 18 23 19 22 20 21 FIGURE 11.
ICM7211, ICM7212 Typical Applications (Continued) 8 DIGIT LCD DISPLAY ICM7211M HIGH ORDER DIGITS +5V 40 26 VCC VDD NC INPUT 20 P10 27 VSS 28 29 2 XTAL1 30 31 32 3 XTAL2 33 4 RESET P17 34 P20 21 7 EA 22 23 24 35 5 SS 80C48 36 µCOMPUTER 37 P27 38 1 TO DB0 12 13 39 T1 14 15 6 INT 16 17 18 DB7 19 ALE PSEN PROG WR 11 9 25 10 +5V ICM7211M LOW ORDER DIGITS 1 VDD 2, 3, 4 SEGMENTS 6-26 35 VSS 37-40 DATA 36 OSC B0-B3 I/O BP 5 DS1 DS2 CS1 CS2 27 28 29 30 31 32 33 34 BP 5 DATA B0-B3 2, 3, 4 1 VDD 6-26
