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| IZ8016 3.5 DIGIT THERMOMETER DESCRIPTION The IZ8016 is a CMOS circuit provided with digital thermometer function. Temperature reading from -50oC to +50oC is detected by use of a thermistor as a sensor and temperature is displayed on a LCD by 0.2oC step. High accuracy is obtained in wide range of -50oC ~ +50oC by providing non-linear correction circuit on the chip. FEATURES * Measurement accuracy: 1oC * Resolution : 0.2oC (oF) * 31/2 + 7 Indicators, 31/2 duty LCD * Low power consumption * Few external components * Easiness in adjustment * Single 1.5V battery operation * Package Type: Bare chip FUNCTIONS * Measurable temperature range -49oC ~ +49.8oC -57oF ~ +121.8oF * Suitable Thermistor RT=10K 1% (at 25oC) * Sampling Cycle 1 seconds, 3 seconds, 5 seconds, 10 seconds (Default 10 sec) * Oscillation Frequency 32.768 kHz * Temperature adjustment: Adjustment of temperature is made by adjusting fundamental resistance against dispersion in resistance values of thermistors ABSOLUTE MAXIMUM RATINGS Characteristic Supply Voltage (VCC) Operating Temperature Range Storage Temperature Range Symbol VCC Topr Tstg Value - 0.1 ~ + 3.0 - 50 ~ + 50 - 50 ~ + 125 Unit V o C o C ELECTRICAL CHARACTERISTICS (Ta = 25oC, VSS = 0V, VCC = 1.5V unless otherwise specified) Characteristic Operating Voltage LCD Voltage Supply Current Symbo l VCC VDD ICC ISTD Test Condition Min 1.20 Operating Standby Typ 1.50 3.00 50 5 Max 2.00 80 10 Unit V V A A 1 IZ8016 SERIAL OUTPUT PUR (FROM CPU) BT8016 measure the temperature once INT (TO CPU) FINISH SHCK (FROM CPU) 1 MD 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Temperature data converted serially by MD, SHCK INT, PUR terminals. Temperature data is output a total 15-bits data. Bit No. 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 Function Polarity 80 40 20 10 8 4 2 1 0.8 0.4 0.2 0.1 o ( C/oF) Remark Polarity (1= Minus; 0 = Plus) (Hundred digit) (oC no use) (0 = oC; 1 = oF) LCD FORMAT A2 B1 F2 G2 C1 E2 D2 C2 E3 D3 B2 F3 G3 C3 E4 D4 A3 B3 F4 G4 F Dp A4 B4 CF CF C4 C 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 COM2 D2/BC1 C2/B2 E3/F3 E4/F4 C3/B3 C4/B4 E2/F2 G2/A2 G3/A3 D3/Dp G4/A4 2 COM1 D4/- -/CF F/C IZ8016 DISPLAY FORMAT APPLICATION CIRCUIT COM & Segments to LCD 24 23 26 25 18 20 19 28 27 22 21 SEG1 SEG2 SEG3 SEG4 SEG5 SEG6 SEG7 SEG8 SEG9 SEG10 SEG11 SEG12 17 29 COM1 SEG13 16 0.1mF 30 VDD 31 VSS SEG14 15 IZ 8016 Chip size, mm: 2,80 x 2,30 COM2 14 VCC (Default C) INT to CPU Data Output Serial Clock Input O 32 CF 33 INT 34 MD 35 SHCK 36 OSC1 OSC2 PUR 2 1 CAP2 13 VCC 12 CAP 11 1M S1 S2 3 4 CAP1 T1 T2 56 7 ADJ REF 89 THER 10 0.1mF 10K VCC (Adjust) Default: 10 sec TM 2nF TM - Thermistor CN36-2H103FB 3 IZ8016 PAD DIAGRAM 10 9 8 7 6 5 4 3 2 1 36 11 12 Y 35 34 13 (0,0) PAD DIAGRAM IZ 8016 X 33 32 31 30 14 15 16 17 18 19 20 Chip size: 2800 x 2300 Pad size : 100 x 100 Unit : mm 29 21 22 23 24 25 26 27 28 NOTE: Substrate is connected to VSS PAD ASSIGNMENT Pad No. 1 2 3 4 Signal OSC2 PUR S1 S2 Description Oscillator circuit X 969 713 314 80 Y 1014 1014 1014 1014 Pad No. 19 20 21 22 Signa l SEG1 0 SEG9 SEG8 SEG7 Description LCD segment drive LCD segment drive LCD segment drive LCD segment drive X -923 -763 -434 -269 Y -1016 -1016 -1016 -1016 Pin option, select the thermistor sampling cycle (default 10 seconds) 5 6 7 8 9 10 11 12 13 14 15 16 17 18 CAP1 T1 T2 ADJ REF THER CAP VCC CAP2 COM2 SEG14 SEG13 SEG12 SEG11 SAMPLING CYCLE, sec VSS VSS 10 VSS VCC 1 VCC VSS 2 VCC VCC 5 Booster capacitor Test input Test input Adjust the fixed temperature (active high) Terminal for temperature detection Terminal for temperature detection Terminal for temperature detection Supply voltage Booster capacitor LCD common drive LCD segment drive LCD segment drive LCD segment drive LCD segment drive S1 S2 -148 -318 -517 -714 -876 -1244 -1266 -1266 -1266 -1266 -1266 -1266 -1266 -1266 1014 1014 1014 1014 1014 1014 685 525 223 -213 -383 -646 -808 -1016 23 24 25 26 27 28 29 30 31 32 33 34 35 36 SEG6 SEG5 SEG4 SEG3 SEG2 SEG1 COM 1 VDD VSS CF INT MD SHC K OSC1 LCD segment drive LCD segment drive LCD segment drive LCD segment drive LCD segment drive LCD segment drive LCD common drive LCD supply voltage GND o C/oF Terminal, default (VSS) select oC Signal to interrupt the MPU Serial Data Serial shift Clock Input Oscillator circuit 59 224 552 718 1046 1229 1261 1261 1261 1261 1261 1261 1261 1261 -1016 -1016 -1016 -1016 -1016 -1016 -723 -295 -127 40 218 431 606 772 4 |
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