 |
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
| Datasheet File OCR Text: |
| IZ1228/IZ1228M 8-DIGIT CALCULATOR The IZ1228/IZ1228M are a single chip CMOS LSI with 8-digit arithmetic operation, single memory, extraction-of-square-root, percentage calculation and auto power off function, designed for FEM LCD operation with a 1.5V power supply. The IZ1228M has special keys (C1, C2, SM) for currency exchange calculations and special memory for save currency rate. FUNCTIONS * Four standard functions (+, -, x, / ) * Auto constant calculations * Mark-up and mark-down calculations * Percentage calculations * Chain multiplication and division * Power calculations * Rough estimate calculations * Clear key: ON/C, CE * Currency exchange calculations : Currency 1 Currency 2 and Currency 2 Currency 1 FEATURES * Single chip CMOS construction * Floating decimal point * LCD direct drive * Special memory for currency rates * Overflow indication: "E" * On chip oscillator components * Direct (IZ1228) or Mirror (IZ1228M) LCD * Punctuation comma * Auto Power off * Saving special memory contents when auto power off * Accumulating memory: M+, M-, MR, MC, MRC * Bare chip is available ABSOLUTE MAXIMUM RATINGS ( Ta = 25oC ) Characteristic Terminal Voltage Supply Voltage (Battery) Operating Temperature Storage Temperature Symbol VDD VIN VDD Ta Tstg Value - 0.3 ~ + 2.1 - 0.3 ~ VDD + 0.3 1.1 ~ 1.8 0 ~ + 50 - 55 ~ + 125 Unit V V V o C o C 1 IZ1228/IZ1228M ELECTRICAL CHARACTERISTICS (Ta = 25oC, VDD = 1.5V, unless otherwise specified) Characteristic Input Voltage (Pins K2 ~ K6) Input Current (Pins K2 ~ K6) Output Voltage 1 (P1, P2, A2~A5) Symbol VIH VIL IIH IIL VOH VOL VOA VOB VOC Fd IOFF IDIS IOP Test Condition Min VDD - 0.4 Typ Max 0.4 1 3 Unit V uA V 0.15 2.80 1.30 2.95 1.50 0 75 1 5 1.70 0.20 V VIN = VDD VIN = 0V without load IOL = 15A without load without load without load VDD = 1.3V while display is on, Rf = 560K display is off VDD = 1.3V while display is on VDD = 1.1V, while operation 0.3 VDD 0.15 1 Output Voltage 2 (H1 ~ H3, a1 ~ a9, b1 ~ b8, c1 ~ c8) Display Frequency 55 Hz Supply Current 3.5 5.6 uA OUTPUT WAVEFORM 1; Hi (i = 1, 2, 3) OUTPUT WAVEFORM 2; ai, bi, ci, (i = 1, 2, ... , 8) FUNCTIONAL DESCRIPTION Decimal point system Complete floating decimal point system. 8 digits leading zero suppression. Zero shift. 2 IZ1228/IZ1228M Symbols : - : negative number display E : error display , : punctuation comma M : non-zero memory indicator C1, C2 : currency exchange operations indicator Error detections * System errors occur when: 1) The division by zero. 2) The extraction of square root of a negative number. * Rough estimate calculation error occur when The integral part of the result of any standard functions, percentage, square, reciprocal, or power calculations exceed 8 digits. Error indication * System error "0" is indicated in the 1-digit position and "E" in the sign-digit position. * Rough estimate calculation error The high-order 8-digit calculation result is indicated together with "E". -8 The decimal point is indicated in the position corresponding to a calculation result of time 10 , and no zero shift is performed Error release * System error A system error can be release by the ON/C key. * Rough estimate calculation error A rough estimate calculation error can be released by the ON/C, CE key. Number entry Numerical can be entered up to 8 digits. Numerical entries equal to 9 digits or more are ignored. Memory protection In any error detection, the special memory content is retained when auto power off. Key bounce protection Front edge Down to 1 word and up to about 3 words. Trailing edge 9 words 1 word is 3.3ms when display frequency is fd = 100Hz. Auto power OFF Power automatically turns off after 9 - 11 minutes pass from the last key pressure. The special memory content is saving when power auto off. 3 IZ1228/IZ1228M LCD CONNECTION , H1 H2 H3 a9 C1 C2 , , , , Direct LCD with IZ1228 c8 b8a8 c7 b7a7 c6 b6a6 c5 b5a5 c4 b4a4 c3 b3a3 c2 b2a2 c1 b1a1 a1b1 c1 a2b2 c2 a3b3 c3 a4b4 c4 a5b5 c5 a6b6 c6 a7b7 c7a8b8 c8 KEY DESCRIPTION 0 . ~ 9 +/= Numerals input keys Decimal point key, Sign change key, Enter key ON/ C CE Clear keys ON/C: Power ON/All clear (system reset) except special memory contents CE: Entry clear such as only the entered data is cleared + C2 x / Four standard function keys % C1 Percent key, Extraction of square root key Currency exchange keys. Entered Data multiplied (when press C1) or divided (when press C2) to the currency rate (content of special memory) 4 , C1 C2 H1 H2 H3 a9 Mirror LCD with IZ1228M , , , , IZ1228/IZ1228M SM Set Currency rate C1/C2 (Entered Data set into special memory by this key) MR MC MRC Recall memory, clear memory, recall and clear memory OFF Off key 5 IZ1228/IZ1228M APPLICATION CIRCUIT (direct LCD) C 1 C 2 1 1 1 3 a6-a8, b5-b8, c5-c8 HH 2, 3 a1 b1 -a5, -b4, c1 -c4 H 1 2 c7 b7 25 26 a7 c6 b6 a6 27 28 29 30 c5 b5 a5 c4 b4 a4 c3 b3 1 31 32 33 34 35 36 37 38 39 a3 c2 a8 24 b8 23 c8 22 40 41 b2 42 43 44 a2 c1 b1 a1 a9 21 2 H 20 1 9 1 8 1 7 1 6 H 3 GD N IZ1228 (CHIP) 45 1 46 H 0.1 F 0.1 F V C V A 47 TST 48 VDD C 49 N + 1N C 1 3 C G IN 5 VB 1 C G OUT 1 .5V 1 4 1 2 K3 11 10 K2 A 2 9 A 3 8 A 4 7 A 5 6 P 2 5 4 3 2 K4 560K 33F P K5 K6 1 2 6 3 A 2 A 3 A 4 A 5 P2 P 1 K5 1 4 8 M - M + K2 M C M R +/- NOTE1: Chip substrate must be floating or connected to GND 6 = 0 K3 MC R 7 % . . 2 5 9 C E + - 3 6 X O /C N O FF K6 S M K4 C 1 . C 2 IZ1228/IZ1228M APPLICATION CIRCUIT (mirror LCD) C 1 C 2 1 3 1 1 a1 b1 -a5, -b4, c1 -c4 H 1 a6-a8, b5-b8, c5-c8 HH 2, 3 1 b3 c3 a4 b4 c4 a5 b5 c5 a6 b6 c6 a7 b7 26 c7 25 2 38 37 36 35 34 33 32 31 a3 c2 b2 a2 c1 b1 a1 1 H 30 29 28 27 39 40 41 42 43 44 45 46 47 48 24 a8 23 b8 22 c8 21 a9 2 20 H IZ1228M (CHIP) 1 9 1 8 H 3 GD N TS T 1V 7C 1V 6A 1 VB 5 1 4 2 K4 3 4 5 P 1 6 P 2 7 A 5 8 A 4 9 A 3 1 0 A 2 1 1 K2 1 2 K3 1 3 C G IN C G OUT VDD 1 .5V + 33F + N C 0.1 F 0.1 F N 49 C 1 560K K6 K5 3 6 2 P 1 K5 P 2 A 5 A 4 A 3 A 2 O /C N X + - 6 3 K6 O FF . . C E 9 5 2 K4 S M M + M - 8 4 1 C 1 +/- M R M C . MC R K2 C 2 = % 7 0 K3 NOTE1: Chip substrate must be floating or connected to GND 7 IZ1228/IZ1228M PAD DIAGRAM 25 24 23 22 21 43 20 44 1 9 45 1 8 46 47 1 7 48 49 1 6 1 1 5 1 4 1 3 1 2 1 1 1 0 9 8 7 6 5 4 3 2 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 PAD LOCATION Pad No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Pad Name NC K4 K6 K5 P1 P2 A5 A4 A3 A2 K2 K3 CG in CG out VB VA VC GND H3 H2 a9 c8 b8 a8 c7 Description X Y Pa d No. 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 Pad Name b7 a7 c6 b6 a6 c5 b5 a5 c4 b4 a4 c3 b3 a3 c2 b2 a2 c1 b1 a1 H1 TST VDD NC Description X Y No Connection Key input Key input Key input Strobe output Strobe output Strobe output Strobe output Strobe output Strobe output Key input Key input Resistor terminal Resistor terminal Capacitor terminal Capacitor terminal Capacitor terminal Ground Display output Display output Display output Display output Display output Display output Display output 1065 1045 880 730 580 430 280 130 -20 -170 -320 -470 -620 -1035 -1065 -1065 -1065 -1065 -1065 -1065 -1065 -1065 -1065 -1065 -1045 -821 -1065 -1085 -1085 -1085 -1085 -1085 -1085 -1085 -1085 -1085 -1085 -1085 -1065 -913 -763 -487 -223 17 177 327 507 697 902 1065 Display output Display output Display output Display output Display output Display output Display output Display output Display output Display output Display output Display output Display output Display output Display output Display output Display output Display output Display output Display output Display output Test Power supply No Connection -890 -740 -590 -440 -240 -140 10 160 310 460 610 760 910 1065 1065 1065 1065 1065 1065 1065 1065 1065 1065 1065 1085 1085 1085 1085 1085 1085 1085 1085 1085 1085 1085 1085 1085 849 694 544 394 244 89 -61 -211 -340 -521 -671 8 IZ1228/IZ1228M PAD DIAGRAM 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 43 20 44 1 9 45 46 47 48 49 1 6 1 1 5 2 3 4 5 6 7 8 9 1 0 1 1 1 2 1 3 1 4 1 7 1 8 39 40 41 42 PAD LOCATION Pad No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Pad Name NC K4 K6 K5 P1 P2 A5 A4 A3 A2 K2 K3 CG in CG out VB VA VC GND H3 H2 a9 c8 b8 a8 c7 Description X Y Pa d No. 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 Pad Name b7 a7 c6 b6 a6 c5 b5 a5 c4 b4 a4 c3 b3 a3 c2 b2 a2 c1 b1 a1 H1 TST VDD NC Description X Y No Connection Key input Key input Key input Strobe output Strobe output Strobe output Strobe output Strobe output Strobe output Key input Key input Resistor terminal Resistor terminal Capacitor terminal Capacitor terminal Capacitor terminal Ground Display output Display output Display output Display output Display output Display output Display output -1065 -1045 -880 -730 -580 -430 -280 -130 20 170 320 470 620 1035 1065 1065 1065 1065 1065 1065 1065 1065 1065 1065 1045 -821 -1065 -1085 -1085 -1085 -1085 -1085 -1085 -1085 -1085 -1085 -1085 -1085 -1065 -913 -763 -487 -223 17 177 327 507 697 902 1065 Display output Display output Display output Display output Display output Display output Display output Display output Display output Display output Display output Display output Display output Display output Display output Display output Display output Display output Display output Display output Display output Test Power supply No Connection 890 740 590 440 240 140 -10 -160 -310 -460 -610 -760 -910 -1065 -1065 -1065 -1065 -1065 -1065 -1065 -1065 -1065 -1065 -1065 1085 1085 1085 1085 1085 1085 1085 1085 1085 1085 1085 1085 1085 849 694 544 394 244 89 -61 -211 -340 -521 -671 9 |
Price & Availability of IZ1228M
 |
|
|
|
|
All Rights Reserved © IC-ON-LINE 2003 - 2022 |
| [Add Bookmark] [Contact Us] [Link exchange] [Privacy policy] |
|
Mirror Sites : [www.datasheet.hk]
[www.maxim4u.com] [www.ic-on-line.cn]
[www.ic-on-line.com] [www.ic-on-line.net]
[www.alldatasheet.com.cn]
[www.gdcy.com]
[www.gdcy.net] |