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JT6M57-AS 2003-02-06 1 toshiba cmos digital integrated circuit silicon monolithic JT6M57-AS JT6M57-AS cmos single-chip lsi for lcd calculator the JT6M57-AS is a single-chip microcomputer for 12-digit or 10-digit 2-memory calculator. JT6M57-AS can drive the liquid crystal display (lcd). single power supply operation, wide operating voltage range and low-power consumption make it suitable for 1.5 v solar battery operated calculator. besides JT6M57-AS can selectable with a pin-programmable to function of power timer and memory hold. features operational features 12 digits or 10 digits (selectable with a pin-programmable) of data, 2 digits of sign, error symbol, memory load symbol. algebraic mode. standard 4 functions (+, ? , , ) memory and grand total (gt) memory calculation. accumulating gt memory register with count up (down) item counter. automatic percentage operation with add-on, discount. automatic delta percentage, mark-up and mark-down operations. square root. constant calculation. chain calculation. change sign. floating minus. key roll over function (2 keys). fixed point (?0?, ?1?, ?2?, ?3?, ?4? or ?6? places) or floating point (selectable with a switch). adding point mode (selectable with a switch). rounding switches (rounding up, down and off). leading zero suppression. trailing zero suppression. punctuation on display, commas for thousands. memory and gt memory contents indicator, turned on with non-zero in the memory and gt memory. registration overflow, indicating that too many digits are entered (the most significant digit are protected). result overflow, indicating during calculation (most function key are locked as it happened). memory overflow indicating to flashing of memory load mark. electrical features complementary output buffer for direct driving of liquid crystal display (f. e. m lcd). oscillator/clock generator internal to chip. keyboard encoding internal to chip. keyboard denouncing internal to chip. automatic power on clear. wide supply voltage range ( ? 1.2~ ? 2.0 v). very low power consumption (3.3 w typ.).
JT6M57-AS 2003-02-06 2 system block diagram battery type
JT6M57-AS 2003-02-06 3 dual type
JT6M57-AS 2003-02-06 4 solar type
JT6M57-AS 2003-02-06 5 connection of lcd select of 10 digits segment common select of 12 digits segment common
JT6M57-AS 2003-02-06 6 key connection k 14 : selectable with calculated digits and memory hold status. mh (memory hold), mk (memory kill), gth (gt memory hold) and gtk (gt memory kill) at auto power off or off key. k 13 : selectable with auto power off mode and total switch. k 12 : rounding switches. k 11 : selectable with fixed point or floating mode. touch key lock key
JT6M57-AS 2003-02-06 7 specification of calculator speed of caluculation (standard oscillating frequency f 48 khz) keys for calculator
JT6M57-AS 2003-02-06 8 operation example 1. fixed point calculation (1) key display fixed point place (2) key display fixed point place 2. adding point mode calculation key display key display key display
JT6M57-AS 2003-02-06 9 3. constant calculation (1) multiplication (2) division key display constant key display constant (3) addition (4) subtraction (5) percentage (6) percentage (7) add-on (8) discount
JT6M57-AS 2003-02-06 10 4. % calculation (1) key display (2) key display 5. mark-up, mark-down calculation (1) mark-up (2) mark-down key display key display 6. add-on, discount calculation add-on discount key display key display (1) (2) (3) (4) (5) (6)
JT6M57-AS 2003-02-06 11 7. average operation use of the item counter key display item counter key display item counter
JT6M57-AS 2003-02-06 12 maximum ratings characteristics symbol rating unit supply voltage v g 0.3~ 2.0 v input voltage v in 0.3~v g 0.3 v operating temperature t opr 0~40 c storage temperature t stg 55~125 c electrical characteristics (v g 1.5 v 0.2 v, v ss2 3.0 0.4 v, v dd 0 v, ta 25c) characteristics symbol test circuit pin name test condition min typ. max unit operating voltage v g 1.2 1.5 2.0 v ?1? input voltage v ih (1) k 3 ~k 10 reset v g 0.4 v g v ?1? input voltage v ih (2) k 11 ~k 14 v ss2 0.4 v ss2 v ?0? input voltage v il k 3 ~k 14 reset 0 0.4 v ?1? output voltage v oh (1) segment com1~3 v ss2 0.2 v ss2 v ?0? output voltage v ol (1) segment com1~3 0 0.2 v ?m? output voltage v om com1~3 v g 0.2 v g 0.2 v ?1? output voltage v oh (2) k 1 ~k 10 v g 0.2 v g v ?0? output voltage v ol (2) k 1 ~k 14 0 0.2 v ?1? output resistance r oh segment com1~3 v out v ss2 0.5 v 70 k ?0? output resistance r ol segment com1~3 v out 0.5 v 70 k r keyh (1) reset v out 0 v 156 364 key pull up resistance r keyh (2) k 1 ~k 10 v out 0 v 240 560 k key read pull up resistance r keyh (3) k 1 ~k 10 v out 0 v 30 600 k r keyh (1) reset k 1 ~k 10 v out 0.5 v 10 key pull down resistance r keyh (2) k 11 ~k 14 v out v ss2 120 800 k (wait) f wait v g 1.5 v 5.4 9.0 12.6 oscillating frequency (operate) f op v g 1.5 v 28.8 48 67.2 khz frame frequency f f segment com1~3 v g 1.5 v 56.3 93.8 131 hz 1 (wait) i ddwait v g 1.5 v 2.2 3.4 2 (operate) i ddop v g 1.2 v 7.0 11.0 supply current 3 (off) i ddoff v g 1.5 v 2.0 a power off timer times t v g 1.5 v 429 600 1001 s
JT6M57-AS 2003-02-06 13 waveforms for display note 1: at f 9 khz
JT6M57-AS 2003-02-06 14 pad location table ( m) name x point y point (ts1) 1367 1469 vg 1160 1469 vss1 971 1469 vss2 775 1469 vb 609 1469 va 424 1469 ts3 252 1469 s3 100 1469 vdd 52 1469 s2 203 1469 s1 355 1469 c12 507 1469 b12 659 1469 a12 810 1469 c11 980 1469 b11 1162 1469 a11 1358 1469 c10 1408 1193 b10 1408 1042 a10 1408 890 c9 1408 738 b9 1408 586 a9 1408 435 c8 1408 283 b8 1408 131 a8 1408 20 c7 1408 172 b7 1408 324 a7 1408 475 c6 1408 627 b6 1408 779 a6 1408 936 c5 1408 1119 b5 1358 1469 a5 1169 1469 c4 999 1469 b4 847 1469 a4 696 1469 name x point y point c3 544 1469 b3 392 1469 a3 240 1469 c2 89 1469 (ts4) 89 1469 b2 240 1469 a2 392 1469 c1 544 1469 b1 696 1469 a1 847 1469 com3 999 1469 com2 1166 1469 com1 1358 1469 k14 1408 1175 k13 1408 1023 k12 1408 871 k11 1408 720 k10 1408 503 k9 1408 352 k8 1408 200 k7 1408 48 k6 1408 104 k5 1408 255 k4 1408 407 k3 1408 559 k2 1408 710 k1 1408 862 reset 1408 1023 (ts2) 1408 1175 note 2: ( ) do not connect.
JT6M57-AS 2003-02-06 15 chip layout pad layout active element
JT6M57-AS 2003-02-06 16 toshiba is continually working to improve the quality and reliability of its products. nevertheless, semiconductor devices in general can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical stress. it is the responsibility of the buyer, when utilizing toshiba products, to comply with the standards of safety in making a safe design for the entire system, and to avoid situations in which a malfunction or failure of such toshiba products could cause loss of human life, bodily injury or damage to property. in developing your designs, please ensure that toshiba products are used within specified operating ranges as set forth in the most recent toshiba products specifications. also, please keep in mind the precautions and conditions set forth in the ?handling guide for semiconductor devices,? or ?toshiba semiconductor reliability handbook? etc.. the toshiba products listed in this document are intended for usage in general electronics applications (computer, personal equipment, office equipment, measuring equipment, industrial robotics, domestic appliances, etc.). these toshiba products are neither intended nor warranted for usage in equipment that requires extraordinarily high quality and/or reliability or a malfunction or failure of which may cause loss of human life or bodily injury (?unintended usage?). unintended usage include atomic energy control instruments, airplane or spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments, medical instruments, all types of safety devices, etc.. unintended usage of toshiba products listed in this document shall be made at the customer?s own risk. the products described in this document are subject to the foreign exchange and foreign trade laws. the information contained herein is presented only as a guide for the applications of our products. no responsibility is assumed by toshiba corporation for any infringements of intellectual property or other rights of the third parties which may result from its use. no license is granted by implication or otherwise under any intellectual property or other rights of toshiba corporation or others. the information contained herein is subject to change without notice. 000707eb a restrictions on product use

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