Datasheet SC3414 Datasheet (SILAN)

Silan Semiconductors

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SC3414

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HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

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Rev: 1.0 2000.12.31

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1

10/12 DIGIT CALCULATOR

DESCRIPTION

The SC3414 is a single-chip LSI CMOS calculator with 12-digits 2-memory or 10-digits 2-memory. SC3414 can drive the liquid crystal display (LCD) with single power supply. Single power supply operation, wide operating voltage and lower power consumption make it suitable for 1.5V solar battery operated calculator. Beside SC3414 can be selected as Auto Power OFF or Manual Power OFF with Lock Key. It also can be selected as Memory Hold or Clear at Power OFF.

FEATURES

* Display: 12-digit or 10-digit (selectable with a pin programmable)

of data, 1-digits of sign, error, memory load symbol. * Algebraic mode * Standard 4 function (addition, subtraction, multiplication,

division). * Memory and Grand total calculation. * Accumulating GT memory register with count up (down) item

counter. * Automatic percentage operation with add-on discount. * Automatic deltapercentage, mark-up and markdown operations. * Square root. * Constant calculation. * Chain calculation. * Change sign. * Floating point (selectable with a sw itch). * Fixed point ("0", "1", "2", "3", "4", or "6" selectable with a switch). * Adding point mode (selectable with a switch). * Rounding switch (rounding up, down and off). * Trailing zero suppression. * Function on display,commas for thousands. * Memory and GT memory contents indicator, turned with nonzero

in the memory and GT memory.

SC3414 chip topography

50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35

34 33 32 31 30 29 28 27 26

25 24

23 22 21 20 18

17161514131211109

9

8

76

5

43

2

1

64

63

62

61

60

59

58

57

56

55

54

53

52

* Complementary output buffer for direct

driving of liquid crystal display * Mem ory overf lows indicat ing. * Result overflow, indicating during

calculation (most function key are

locked as it happened). * Keyboard encoding internal to chip.

* Automatic power on clear. * Wide supply voltage range (1.1 to 1.8V)

* Very low power consumption. * Floating minus. * Key roll over function (2 keys). * Oscillator/clock generator internal to

chip. * Registration overflow, indicating too

many digits are entered (the most

significant digit is protected).

Silan Semiconductors

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SC3414

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HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

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Rev: 1.0 2000.12.31

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2

PAD ASSIGNMENT

RESET

VA

GND

S2

S1

C12

VEE

VDD

C10

A11

B11

C11

A12

B12

VB

TS1

A5

C4

B4

C3

B3

A3

B10

B7

A8

C7

B8

B9 C9 A10

A9

C8

K1

K10

K8

K9

K7

K4 K3 K2

K5

K6

K11

K12

K13

K14

A7

C6

B6

A6

C5

B5

A4

C2

B2

A2

C1

B1

A1

COM3

COM2

COM1

36 3542 40 39

38 37

32

18

17

4344454647484950

52 53

1312111098

7

6

5

4

3

2

14

15

16

41

55

54

56

58

57

59 60 61 62 63 64

SC3414

20

21

22

23

24

25

26

27

28

29

30

31

33

34

1

Note: The IC substrate should be connected to GNDin the PCB layout artwork.

ABSOLUTE MAXIMUM RATING

Characteristic Symbol Value Unit

Supply Voltage V

DD -VSS

-0.3 ~ +2.0 V

Input Voltage V

IN

-0.3~VDD+0.3 V

Storage temperature T

STG

-55 ~ +125 °C

Operating Temperature T

OPT

0~+50 °C

ELECTRICAL CHARACTERISTICS

(VDD=1.5V±0.2V, GND=0V,TA=25°C, VEE=3.0±0.4V)

Parameter Symbol Conditions Min Typ Max Unit

Operating Voltage V

DD

1.1 1.5 1.8 V

K3~K10, RESET Input High Voltage VIH(1) VDD-0.4 -- V

DD

V

K11~K14Input Low Voltage VIH(2) VEE-0.4- -- V

EE

V

K3~K10, RESET Input Low Voltage V

IL

0--0.4V

SEGMENT, COM1~3 Output High Voltage VOH(1) VEE-0.2 -- V

EE

V SEGMENT COM1~3 Output Low Voltage VOL(1) 0 -- 0.20 V COM1~3 Output Middle Voltage V

OM

VDD-0.2 -- VDD+0.2 V

(To be continued)

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SC3414

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HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

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Rev: 1.0 2000.12.31

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3

(Continued)

Parameter Symbol Conditions Min Typ Max Unit

K1~K10 Output High Voltage VOH(2) VDD-0.2 -- V

DD

V K1~K14 Output LowVoltage VOL(2) 0 -- 0.2 V SEGMENT, COM1~3 Output High Resistance R

OHVOUT=VEE

-0.5V -- -- 70 kΩ

SEGMENT, COM1~3 Output Low Resistance R

OLVOUT

=0.5V -- -- 70 kΩ

K1~K10 Pull Down Resistance R

KEYL

(1) VOUT =V DD 240 -- 650 kΩ

K1~K10 Pull Up Resistance R

KEYH

(2) V

OUT

=0.5V -- -- 10 kΩ

RESET Pull UpResistance R

KEYH

(2) V

OUT

=0.5V 50 -- 370 kΩ

Oscillating (WAIT) f0

WAIT

VDD =1.5V 10.8 18 25.2 kH

Z

Frequency (OPERATE) f0

OP

VDD =1.5V 57.6 96.0 134.4 kH

Z

SEGMENT, COM1~3 Frame Frequency f

F

VDD =1.5V 56.3 93.8 131 H

Z

I

DDWAIT

(WAIT) -- 2.2 3.4 µA

I

DDOP

(OPERATE) -- 7.0 11.0 µA

Supply Current

I

DDOFF

(OFF) -- -- 1.0 µA

Power off Timer Times T VDD =1.5V 429 600 1001 SEC

PIN DESCRIPTION

Pin No. Symbol I/O Description

1 K1 O Key output strobe signal to key 2 RESET O System reset 3TS1 OTestpin 4 VDD O Power supply 5 VEE O Connected to capacitor 6 VB I Connected as voltage doubler 7 VA I Connected as voltage doubler 8 GND I Ground

9 S2 O Output Signal to LCD 10 S1 I Output Signal to LCD 11 C12 O Output Signal to LCD 12 B12 O Output Signal to LCD 13 A12 O Output Signal to LCD 14 C11 O Output Signalto LCD 15 B11 O Output Signal to LCD 16 A11 O Output Signal to LCD

(To be continued)

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SC3414

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HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

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Rev: 1.0 2000.12.31

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4

(Continued)

Pin No. Symbol I/O Description

17 C10 O Output Signal to LCD 18 B10 O Output Signal to LCD 20 A10 O Output Signal to LCD 21 C9 O Output Signal to LCD 22 B9 O Output Signal to LCD 23 A9 O Output Signal to LCD 24 C8 O Output Signal to LCD 25 B8 O Output Signal to LCD 26 A8 O Output Signal to LCD 27 C7 O Output Signal to LCD 28 B7 O Output Signal to LCD 29 A7 O Output Signal to LCD 30 C6 O Output Signal to LCD 31 B6 O Output Signal to LCD 32 A6 O Output Signal to LCD 33 C5 O Output Signal to LCD 34 B5 O Output Signal to LCD 35 A5 O Output Signal to LCD 36 C4 O Output Signal to LCD 37 B4 O Output Signal to LCD 38 A4 O Output Signal to LCD and Output strobe to lock key 39 C3 O Output Signal to LCD and Output strobe to lock key 40 B3 O Output Signal to LCD and Output strobe to lock key 41 A3 O Output Signal to LCD and Output strobe to lock key 42 C2 O Output Signal to LCD and Output strobe to lock key 43 B2 O Output Signal to LCD and Output strobe to lock key 44 A2 O Output Signal to LCD and Output strobe to lock key 45 C1 O Output Signal to LCD and Output strobe to lock key 46 B1 O Output Signal to LCD and Output strobe to lock key 47 A1 O Output Signal to LCD and Output strobe to lock key 48 COM3 O Common 3to LCD 49 COM2 O Common 2to LCD 50 COM1 O Common 1to LCD 52 K14 I Key input signal

(To be continued)

Silan Semiconductors

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SC3414

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HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

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Rev: 1.0 2000.12.31

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5

(Continued)

Pin No. Symbol I/O Description

53 K13 I Key input signal 54 K12 I Key input signal 55 K11 I Key input signal 56 K10 I Key input signal 57 K9 I Key input signal 58 K8 I/O Key output strobe signal and key input signal 59 K7 I/O Key output strobe signal and key input signal 60 K6 I/O Key output strobe signal and key input signal 61 K5 I/O Key output strobe signal and key input signal 62 K4 I/O Key output strobe signal and key input signal 63 K3 I/O Key output strobe signal and key input signal 64 K2 O Key output strobe signal to key

FUNCTIONAL DESCRIPTION

A). Operation Characteristics

a).Constant Operation

The SC3414 has implied constant mode on +, -, X,H &%operations. The constant is performed automatically by the "="key, "%" key, or "%"key without a constant for addition, subtraction and division while the first operand is the constant for multiplication.

b).Number Entry

Numbericals can be entered up to 12-digit.

c).Memory Protection

In any error detection, the memory contents present before the error detection are protected.

d).Memory Indication

If the memory contents are a number other than zero, "M" is indicated in the sign-digit position.

e).Auto Power Off

If no key is depressed for a specific periodof time, the power supplywill automatically turn off (pin option). This

time interval up to power-off is 600 sec.

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SC3414

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HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

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Rev: 1.0 2000.12.31

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6

f).Key Definition

i).Touch Key Constitution

OFF

GT+

6

M+

CE

+

.

C ON

GT-

7

M-

-

00

CE/C ON

8

IC

X

R C

GT

R C

M

01

RM

9

CM

+/-

=

23

%

EX

MU

45

AC

RESET

GND

K1

K2

K3

K4

K5

K6

K7

K8

K9

K10

ii).Lock Key Constitution

10-digit MH,GTK

10-digit MH,GTH

12-digit MH,GTK

12-digit MH,GTH

10-digit MK,GTK

10-digit MK,GTH

12-digit MK,GTK

12-digit MK,GTH

A,



A,



A,



A,



A,



A,



A,



A,



5/4 5/4

10ADD432FF 6

OPEN B3 A3 C2 B2 A2 C1 B1 A1

K14

K13

K12

K11

K14: Select withCalculated Digits and Memory Hold Status, MH (Memory Hold), MK (Memory Kill), GTH

(GT Memory Hold) and GTX (GT Memory Kill) at Auto Power OFF or OFF key. K13: Select withAuto PowerOFF mode and Total switch. K12: Rounding switches.

K11: Select with Fixed point or Floating mode.

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SC3414

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HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

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Rev: 1.0 2000.12.31

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7

B). Keyboard Description

a).Equal Key (=)

i).Performs Keyed-in operation and maintains that operation for possible use. ii).Establishes power/reciprocation calculation.

b).Multiplication Key (×)

i).Enters multiplicand. ii).Performs previous operation and displays result.

c).Division Key (H)

i).Enters dividend. ii).Performs previous operation and displays result.

d).Addition Key (+)

i).Conditions machine for an addition. ii).Performs previous operation and displays result.

e).Subtraction Key (-)

i).Conditions machine for a subtraction. ii).Performs previous operation and displays result.

f).Percent Key (%)

The purpose of the percent key is to allow for calculation of add-on and discount. Determination of add-on requires the principal amount to be the first entry followed by the "+" or "X" key, with the percentage being the second entry. Depression of the percent key yields the amountto add on, such as tax or interest. Depression of the "=" keyadds this amount to the principal.

g).Change Sign Key (+/-)

Pushing the "+/-" key twice in succession causes the corresponding sign to appear and disappear. During digit entry, this function changes he sign of the entered factor.

h).Power On/All Clear Key (ON/AC)

i).First push power-ondisplays "0". ii).In the middle of a digit entry, a second push will clear all operating register).

i)Clear Entry/Clear Key (CE/C)

i).During the digit entry,the first depression will clear the entry register.And display the previous enter number

again.

ii).The second push will clear all registers.

j).Clear Entry Key (CE)

During the digit entry will clear the entry register and display number "0".

k).Square Root Key (Ö )

Extracts the square root of a positive number displayed in the entry register.

l).Memory Plus Key (M+)

i). Adds the current display to the contents of memory. ii). It willterminate a number entry.

Silan Semiconductors

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SC3414

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HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

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Rev: 1.0 2000.12.31

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8

m).Memory Minus Key (M-)

i).Subtracts the current display from the contents of memory ii).It will terminate a number entry.

n).memory Recall and Clear Key (RCM)

i).First push, as RM key, transfers the contents of the memory register into the display register. ii).Second push, as CM key, clears the memory.

o).Number, Decimal Key ("00", "0 - 9", "•")

The first number key in a sequence will clear the display and enter the digit in the display. Successive entries will shift the display left and enters the data in display register. The first decimal point entered is effective. An attempted entry of more than 12 digits or 11decimal places will be ignored.

p).GT Memory Recall and Clear Key (RC GT)

i).First push, as RGT key, transfers the contents of the GT memory register into the display register. ii).Second push, as CGT key, clears the GT memory.

q).Exchange Key (EX)

Exchange two operand between the operator. For example, key in "a-b", and then key in "EX" will exchange a

andbto"b-a".

r).Shift Key (→)

Delete the rightest digit and others will shift to right.

s).Item Counter Key (IC)

i).The "+" and "=" key will increase the counter's contents by one. ii).The "-" will decrease it by two. iii).The others operator key and number key will not change it.

t).Grand Total Plus(GT+)

Ands the current display to the content of grand total memory.

u).Grand Total Minus (GT-)

Subtracts the current display from the content of grand total memory.

GT- will terminate a number entry.

C). Error Conditions

a).Error Detection

System errors occur when :

i).The integral part of any calculation result exceeds 12 digits.

ii).The integral part of any memory calculation result exceeds 12-digit or when the integral part of any addend

or subtrahend to memory exceeds 12-digit. iii).The integral part of a mark-up and mark-down calculation result exceeds 12-digit. v).A division by zero is attempted. iv).An extraction of the square root of a negative number is attempted.

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SC3414

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HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

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Rev: 1.0 2000.12.31

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9

b).Error Indication

i).System error :

a)."0" is indicated in the first-digit position and "E" in the sign-digit position.

b).The high-order 12-digit of a calculation result is indicated together with "E". The location of the decimal

point corresponds to the result of calculation times le-12, and no zero shift is performed.

c).Error Release

i).System error :

A system error can be released by depressing ON/AC key or CE/C key. However the calculation result is

not cleared by CE/C key but is retained.

D). LCD Display

a).Inter Connection of LCD

i).Select of 10-digits

C8 B8 A8 C7 B7 A7 C6 B6 A6 C5 B5 A5 C4 B4 A4 C3 B3 A3 C2 B2 A2 C1 B1 A1

S1

COM 1 23

SEGMENT

COMMON

C9 B9 A9C12 B12 A12C11 B11A11C10 B10 A10

ii).Select of 12-digits

C10 B10 A10 C9 B9 A9 C8 B8 A8 C7 B7 A7 C6 B6 A6 C5 B5 A5 C4 B4 A4 C3 B3 A3 C2 B2 A2 C1 B1 A1

S1

COM 1 23

SEGMENT

COMMON

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SC3414

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Rev: 1.0 2000.12.31

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10

E). Waveforms for Display

VEE=3V V

DD

=1.5V

GND

V

EE

=3V

GND +3.0V +1.5V 0V

-1.5V

-3.0V

+1.5V 0V

-1.5V

+3.0V +1.5V 0V

-1.5V

-3.0V

T

T1

OFF ON OFF ON OFF ON

OFF

OFF ON OFF ON OFF

When f0=18kHz T=1/93.8Hz T1=3.56ms

COM3

COM1

COM2

SEGMENT

A1

A1-COM3

(ON)

A1-COM2

(OFF)

A1-COM1

(ON)

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SC3414

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11

APPLICATION CIRCUITS

C

ON

A3

B3

C3

A4

B4

C4

A5

COM3

A1

B1

C1

A2

B2

C2

COM1

COM2

C12

B12

A12

C11

B11

A11

C10

VDD

VEE

VB

VA

GND

S2

S1

TS1

B7

A7

C6

A6

C5

B5

C9

B9

A9

C8

B8

A8

C7

B10

A10

K8

K9

K10

K11

K12

K13

K14

K1

K2

K3

K4

K5

K6

K7

RESET

SC3414

12

MK

GTH

A,



ADD

12

MK

GTK

A,



0

10

MK

GTH

A,



1

10

MK

GTK

A,



2

12

MH

GTH

A,



3

12 MH

GTK

A,



4

10

MH

GTH

A,



6

10

MH

GTK

A,



F

5/4 5/4

AC

CE M+ 6 GT+ OFF

C/CE

ON

00 M- 7 GT-

0

X

IC 8

1 RM 9

2 +/- CM

3 % EX

4 MU

5

R C

GT

R C

M

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SC3414

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HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

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Rev: 1.0 2000.12.31

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12

CHIP TOPOGRAPHY

50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35

34 33 32 31 30 29 28 27 26 25 24

23 22 21 20 18

17161514131211109

9

8

76

5

43

2

1

64

63

62

61

60

59

58

57

56

55

54

53

52

K1

K2

K4 K3

K5

K6

K7

K8

K9

K10

K11

K12

K13

K14

COM1

COM2

COM3A1B1

C1

A2

B2

C2

A3

B3

C3

A4

B4

C4

A5

B5 C5 A6 B6 C6 A7 B7 C7 A8 B8 C8

A9 B9 C9 A10 B10

C10

A11

B11

C11

A12

B12

C12

S1

S2

GND

VA

VB

VEE

VDD

TS1

RESET

Chip Size : 2.780 x 2.510 (mm2)

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SC3414

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HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

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Rev: 1.0 2000.12.31

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13

PAD COORDINATES

(Unit: µm)

No.

Symbol X Y

No.

Symbol X Y

1K1

-1065 -995

33 C5

1100 875

2 RESET

-1085 -1230

34 B5

1100 1010

3TS1

-940 -1205

35 A5

1050 1240

4VDD

-790 -1200

36 C4

920 1240

5 VEE

-625 -1200

37 B4

780 1240

6VB

-490 -1220

38 A4

645 1240

7VA

-350 -1215

39 C3

510 1240

8GND

-215 -1230

40 B3

375 1240

9S2

-80 -1235

41 A3

240 1240

10 S1

55 -1235

42 C2

105 1240

11 C12

190 -1235

43 B2

-30 1240

12 B12

325 -1235

44 A2

-165 1240

13 A12

460 -1235

45 C1

-300 1240

14 C11

595 -1235

46 B1

-435 1240

15 B11

730 -1235

47 A1

-570 1240

16 A11

865 -1235

48 COM3

-750 1240

17 C10

1000 -1235

49 COM2

-890 1240

18 B10

1100 -1015

50 COM1

-1030 1240

20 A10

1100 -880

52 K14

-1050 895

21 C9

1100 -745

53 K13

-1050 745

22 B9

1100 -610

54 K12

-1050 605

23 A9

1100 -475

55 K11

-1050 455

24 C8

1100 -340

56 K10

-1100 320

25 B8

1100 -205

57 K9 -1100 175

26 A8

1100 -70

58 K8 -1065 35

27 C7

1100 65

59 K7 -1065 -110

28 B7

1100 200

60 K6 -1065 -255

29 A7

1100 335

61 K5 -1065 -390

30 C6

1100 470

62 K4 -1065 -545

31 B6

1100 605

63 K3 -1065 -675

32 A6

1100 740

64 K2 -1065 -830

Note: The original point of the coordinate is the die center.