Page 1
MYSON
TECHNOLOGY
MTU418
4-Bit Micro-Controller with LCD Driver, 1K Word
This datasheet contains new product information. Myson Technology reserves the rights to mo dify the product specification without
notice. No liability is assumed as a result of the use of this product. No rights under any patent accompan y the sale of the product.
MTU418 Revision 2.5 01/15/1997
1/8
FEATURES
•
Very low current dissipation.
•
Wide operati ng vol tage range.
•
Supports both Ag and Li batteries.
•
Powerful instruction set.
•
4-level subroutine nesting (inc luding i nterrupt).
•
4 event dr iven interrupts, 2 exter nal and 2 internal.
•
ROM size: 1024 x 15 bits.
•
RAM size: 48 x 4 bits.
•
Input ports: 1 port/ 4 pins (M-PORT).
•
Control output: ALARM.
•
LCD driver outputs (can dr iv e up to 60 LCD segments).
•
Mask option to selec t 3 LCD drive modes: static, duplex 1/2 duty 1/2 bias, 1/3 duty 1/2 bi as.
•
Mask option permits LCD dri ver out put pins to be used for DC output ports. Up to 20 pins are
available. SEG13-SEG20 can be selected by open-drain output.
•
Segment PLA c ircuit permi ts any layout on t he LCD panel.
•
Built-i n clock generator (crystal or RC).
•
Built - in voltage doubl er , halver.
GENERAL DESCRIPTION
The MTU418 is a single-chip 4-bit microcontr oller with LCD dr ivers. It can drive up to 3 common ti me
20 segments, i. e. 60 segments LCD driver. This 4-bit microc ontroll er c ontains a 4-bit par allel
processing ALU, 1024 x 15- bit program ROM, 48 x 4-bit data RAM, input ports, alar m driver, timer ,
clock generator, crystal and RC oscillator circuit, LCD driver and 70 powerf ul instructions in a singl e
chip. It uses HALT instruction to stop all internal operations other than the ti mer, clock generator,
crystal/RC oscillator and LCD driver. Very low current dissipat ion can be easily ac hieved by
combini ng 4 types of int errupt functi on and HALT instruction to minimize the operation cycl e.
BLOCK DIAGRAM
OUTPUT
PORT
INPUT
PORT
OSCILLATOR
6 BITS PRESET
TIMER
ALU
RAM 48 X 4 BITS
LCD DIRVER
SEGMENT PLA
PRE-DIVIDER
CONTROL
CIRCUIT
4 LEVELS STACK
INSTRUCTION
DECODER
10 BITS PROGRAM
COUNTER
PROM
1024 X 15 BITS
4 BITS DATA BUS
VDD1~2
SEG1~20
COM 1~3
M1~4
ALARM
OSC
IN
OSC
OUT
CUP 1
CUP 2
RESET
INT
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MYSON
TECHNOLOGY
MTU418
MTU418 Revision 2.5 01/15/1997
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1.0 PACKAGE & CHIP INFORMATION
Chip Size 1995 x 1590 (µm2)
Pad Pitch min. 140µm
Bounding Diagram
OSCIN
OSCOUT
TESTAM4M3
M2
M1
INTPAD
RESET
ALARM
VDD2
VDD1
GND
COM2
COM3
SEG20
SEG19
SEG18
SEG17
SEG5
SEG6
SEG7
SEG8
SEG9
SEG10
SEG11
SEG12
SEG13
SEG14
SEG15
SEG16
VDD
CUP1
CUP2
COM1
SEG1
SEG2
SEG3
SEG4
2.0 PIN/PAD ASSIGNMENT
Unit : um
Coordinate Coordinate
Pad
No.
Name
XY
Pad
No.
Name
XY
1
GND
1909.5 1128.60 21
SEG4
85.50 199.50
2
VDD1
1909.5 1275.60 22
SEG5
234.00 88.50
3
VDD2
1757.40 1500.60 23
SEG6
381.00 88.50
4
ALARM
1610.40 1500.60 24
SEG7
519.00 88.50
5
RESET
1465.80 1500.60 25
SEG8
657.00 88.50
6
INT
1327.80 1500.60 26
SEG9
795.00 88.50
7
M1
1152.00 1500.60 27
SEG10
933.00 88.50
8
M2
1023.00 1500.60 28
SEG11
1071.00 88.50
9
M3
894.00 1500.60 29
SEG12
1209.00 88.50
10
M4
765.00 1500.60 30
SEG13
1347.00 88.50
11
TESTA
636.00 1500.60 31
SEG14
1485.00 88.50
12
OSCOUT
498.00 1500.60 32
SEG15
1623.00 88.50
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MYSON
TECHNOLOGY
MTU418
MTU418 Revision 2.5 01/15/1997
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13
OSCIN
155.10 1500.60 33
SEG16
1761.00 88.50
14
VDD
85.50 1132.50 34
SEG17
1909.50 219.60
15
CUP1
85.50 994.50 35
SEG18
1909.50 375.60
16
CUP2
85.50 865.50 36
SEG19
1909.50 527.10
17
COM1
85.50 736.50 37
SEG20
1909.50 678.60
18
SEG1
85.50 607.50 38
COM3
1909.50 830.10
19
SEG2
85.50 478.50 39
COM2
1909.50 981.60
20
SEG3
85.50 349.50
*Note: The substrate must connect t o GND.
3.0 PIN DESCRIPTION
Name Type Description
OSCIN
OSCOUT
I
O
Typical 32.768kHz crystal is connected across OSCIN/O S CO UT for
oscillation, R/C oscillation mode is also available.
M1 - 4 I Input pins with pull-down Tr or "L- level hold" Tr.
INT I External inter r upt request control input pin.
RESET I System reset pin with pull-down resistance.
ALARM O
Output only f or outputting 4kHz/2kHz /1kHz modulati on signal. Also can be
used to output non-m odulation si gnal.
VDD
Power supply pin f or logic unit inside LSI. When using Li version, a
capacitor must be connected ac r oss GND and VDD t o pr event logic unit
from mal functioning.
VDD1 For Ag-B mode positive power supply pi n.
VDD2 For Li-B(EXTV) mode positive power supply pin.
GND Negative power supply pin.
CUP1 - 2 O Pins for c onnec ting voltage step- up ( step- down) capacitor.
Output pi ns for LCD panel common plate.
The following pins are used in eac h c ase.
Static 1/2 duty 1/3 duty
COM1
COM2
COM3
Alternating
frequency
Ο
32Hz*
Ο
Ο
32Hz*
Ο
Ο
Ο
43Hz*
COM1 - 3
O
* Frequency can be doubl ed, quadrupled with P LA .
SEG1 - 20
O
Output pi ns for LCD panel segm ents.
* Also used as output ports with m ask opt ion.
TESTA * Test pin (for inter nal testing only).
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MYSON
TECHNOLOGY
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4.0 ABS OLUTE MAXIMUM RATINGS
at Ta = 0 to 70oC, GND = 0V
Name Symbol Range Unit
VDD1 +1.3 to +5.5 V
Maximum S upply Volt age
VDD2 +2.5 to +5.5 V
Maximum Input Volt age Vin1 -0.3 to VDD1+ 0.3 V
Vout1 -0.3 to VDD1+ 0.3 V
Maximum Output Voltage
Vout2 -0.3 to VDD2+ 0.3 V
Maximum Operating T emperature Topg 0 to +70
o
C
Maximum S torage Temper ature Tstg -25 to +125
o
C
5.0 ALLOWABLE OPERATING CONDITIONS
at Ta = 0 to 70oC, GND = 0V
Name Symb. Condition Min. Max. Unit
VDD1 1.5 5.25 VSupply Vol tage
VDD2
External RC Mode
3.5 5.25 V
VDD1 1.2 5.25 VSupply Vol tage
VDD2
Crystal Mode
2.4 5.25 V
Vss1 1.2V VOscillator Start-Up
Supply Vol tage
Vss2
Crystal Mode
1.2V V
Input "H" Voltage Vih1 VDD1-0.3 VDD1+0.3 V
Input "L" Voltage Vil1
Ag Battery Mode
-0.5 0.2 V
Input "H" Voltage Vih2 VDD2-0.6 VDD2+0.6 V
Input "L" Voltage Vil2
Li Battery Mode
-0.7 0.7 V
Input "H" Voltage Vih3 0.8 x VDD1 VDD1 V
Input "L" Voltage Vil3
OSCIN at Ext. RC & A g
Battery Mode
0 0.2 x VDD1 V
Input "H" Voltage Vih4 0.8 x VDD2 VDD2 V
Input "L" Voltage Vil4
OSCIN at Ext. RC & Li
Battery Mode
0 0.2 x VDD2 V
Fopg1
Ag Battery Mode
32 32 KHz
Fopg2
Li Battery Mode
32 100 KHz
Operating Freq.
Fopg3
External RC Mode
32 1000 KHz
6.0 ELECTRICAL CHARACTERISTICS
at #1 : VDD1 = 1.2V ( Ag ); #2 : V DD2 = 2.4V ( Li ) ; #3 : VDD2 = 4V ( E xtV).
6.1 Input Resistance
Name Symb. Condition Min. Typ. Max. Unit
Rllh1
Vi = 0. 2V DD1, #1
10 40 100 Kohm
Rllh2
Vi = 0. 2V DD1, #2
10 40 100 Kohm
M-Port L-Level Hold Tr
Rllh3
Vi = 0. 2V DD1, #3
5 20 50 Kohm
Rmsd1
Vi = VDD1, #1
200 700 2000 Kohm
Rmsd2
Vi = VDD2, #2
200 500 1000 Kohm
M-Port Pull-Down Tr
Rmsd3
Vi = VDD2, #3
100 250 500 Kohm
INT Pull-Up Tr
Rintu1
Vi = VDD1, #1
200 700 2000 Kohm
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TECHNOLOGY
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Rintu2
Vi = VDD2, #2
200 500 1000 Kohm
Rintu3
Vi = VDD2, #3
100 250 500 Kohm
Rintd1
Vi = G ND, #1
200 700 2000 Kohm
Rintd2
Vi = G ND, #2
200 500 1000 Kohm
INT Pull-Down Tr
Rintd3
Vi = G ND, #3
100 250 500 Kohm
Rres1
Vi = G ND or V DD1, #1
5 20 50 Kohm
Rres2
Vi = G ND or V DD2, #2
5 20 50 Kohm
RES Pull - Down R
Rres3
Vi = G ND or V DD2, #3
5 20 50 Kohm
6.2 DC Outpu t Characteristics
Name Symb. Condition for Min. Typ. Max. Unit
Voh1a
Ioh = 200µA, #1
0.8 0.9 1.0 V
Voh2a
Ioh = 500µA, #2
1.5 1.8 2.1 VOutput "H" V oltage
Voh3a
Ioh = 1m A , #3
2.5 3 3. 5 V
Vol1a
Iol = 400µA, #1
0.2 0.3 0.4 V
Vol2a
Iol = 1mA, #2
0.3 0.6 0.9 V
Output "L" V oltage
Vol3a
Iol = 2mA, #3
Alarm
0.5 1 1. 5 V
6.3 Segment Driver Outp ut Characteristics
Name Symb. Condition for Min. Typ. Max. Unit
CMOS Output Mode
Voh1c
Ioh = -10uA, #1
0.8 0.9 1.0 V
Voh2c
Ioh = -50uA, #2
1.5 1.8 2.1 VOutput "H" V oltage
Voh3c
Ioh = -200uA, #3
2.5 3 3. 5 V
Vol1c
Iol = 20uA , #1
0.2 0.3 0.4 V
Vol2c
Iol = 100uA , #2
0.3 0.6 0.9 VOutput "L" V oltage
Vol3c
Iol = 400uA , #3
SEGn
0.5 1 1. 5 V
Static Disp lay Mode
Voh1d
Ioh = -1uA, #1
1.0 V
Voh2d
Ioh = -1uA, #2
2.2 VOutput "H" V oltage
Voh3d
Ioh = -1uA, #3
3.8 V
Vol1d
Iol = 1uA , #1
0.2 V
Vol2d
Iol = 1uA , #2
0.2 VOut put "L" Voltage
Vol3d
Iol = 1uA , #3
SEGn
0.2 V
Voh1e
Ioh = -10uA, #1
1.0 V
Voh2e
Ioh = -10uA, #2
2.2 VOutput "H" V oltage
Voh3e
Ioh = -10uA, #3
3.8 V
Vol1e
Iol = 10uA , #1
0.2 V
Vol2e
Iol = 10uA , #2
0.2 VOut put "L" Voltage
Vol3e
Iol = 10uA , #3
COMn
0.2 V
Duplex (1/ 2 Bias, 1/2 Dut y) Display Mode
Voh12f
Ioh = -1uA, #1, #2
2.2 V
Output "H" V oltage
Voh3f
Ioh = -1uA, #3
3.8 V
Vol12f
Iol = 1uA , #1, #2
0.2 V
Output "L" V oltage
Vol3f
Iol = 1uA , #3
SEGn
0.2 V
Voh12g
Ioh = -10uA, #1, #2
2.2 V
Output "H" V oltage
Voh3g
Ioh = -10uA, #3
COMn
3.8 V
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MYSON
TECHNOLOGY
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Vom12g
Iol/h= +/-10uA, #1, #2
1.0 1.4 V
Output "M" Voltage
Vom3g
Iol/h= +/-10uA, #3
1.8 2.2 V
Vol12g
Iol = 10uA , #1
0.2 V
Output "L" V oltage
Vol3g
Iol = 10uA , #3
0.2 V
1/2 Bias, 1/3 Duty Displ ay M ode
Voh12h
Ioh = -1uA, #1 ,#2
V
Output "H" V oltage
Voh3h
Ioh = -1uA, #3
V
Vol12h
Iol = 1uA , #1 ,#2
0.2 V
Output "L" V oltage
Vol3h
Iol = 1uA , #3
SEGn
0.2 V
Voh12i
Ioh = -10uA, #1, #2
2.2 V
Output "H" V oltage
Voh3i
Ioh = -10uA, #3
3.8 V
Vom12i
Iol/h= +/-10uA, #1, #2
1.0 1.4 V
Output "M" Voltage
Vom3i
Iol/h= +/-10uA, #3
1.8 2.2 V
Vol12i
Iol = 10uA , #1, #2
0.2 V
Output "L" V oltage
Vol3i
Iol = 10uA , #3
COMn
0.2 V
6.4 Instruction Table
Note: Rx=28~37 not used
Instruction Machine Code Function Remark Flag
NOP
000 0000 0000 0000
No Operation
LCT Y, X
000 00YY YYXX XXXX
(Ly) < = (Rx) Y=000- No Use
MRA X
000 1101 01XX XXXX
CF <= (Rx3)
LCB Y,X
000 01YY YYXX XXXX
(Ly) < = (Rx) Y=000- No Use
LCP Y,X
000 10YY YYXX XXXX
abcd,efgh <= (Rx),(AC) Y=000- No Use
ADC X
001 0000 00XX XXXX
(AC) <= (Rx)+(AC)+(CF) CF
ADC* X
001 0000 10XX XXXX
(AC),(Rx) <= (Rx)+(AC)+(CF) CF
SBC X
001 0001 00XX XXXX
(AC) <= (Rx)+(AC)B+(CF) CF
SBC* X
001 0001 10XX XXXX
(AC),(Rx) <= (Rx)+(AC)B+(CF) CF
ADD X
001 0010 00XX XXXX
(AC) <= (Rx)+(AC) CF
ADD* X
001 0010 10XX XXXX
(AC),(Rx) <= (Rx)+(AC) CF
SUB X
001 0011 00XX XXXX
(AC) <= (Rx)+(AC)B+1 CF
SUB* X
001 0011 10XX XXXX
(AC),(Rx) <= (Rx)+(AC)B+1 CF
ADN X
001 0100 00XX XXXX
(AC) <= (Rx)+(AC)
ADN* X
001 0100 10XX XXXX
(AC),(Rx) <= (Rx)+(AC)
AND X
001 0101 00XX XXXX
(AC) <= (Rx) AND (AC)
AND* X
001 0101 10XX XXXX
(AC),(Rx) <= (Rx) AND (AC)
EOR X
001 0110 00XX XXXX
(AC) <= (Rx) EOR (AC)
EOR* X
001 0110 10XX XXXX
(AC),(Rx) <= (Rx) EOR (AC)
OR X
001 0111 00XX XXXX
(AC) <= (Rx) OR (AC)
OR* X
001 0111 10XX XXXX
(AC),(Rx) <= (Rx) OR (AC)
ADCI Y,D
001 1000 0DDD DYYY
(AC) <= (Ry)+(D)+ (CF) CF
ADCI* Y,D
001 1000 1DDD DYYY
(AC),(Ry) <= (Ry)+(D)+(CF) CF
SBCI Y,D
001 1001 0DDD DYYY
(AC) <= (Ry)+(D)B+ (CF) CF
SBCI* Y,D
001 1001 1DDD DYYY
(AC),(Ry) <= (Ry)+(D)B+(CF) CF
ADDI Y,D
001 1010 0DDD DYYY
(AC) <= (Ry)+(D) CF
ADDI* Y,D
001 1010 1DDD DYYY
(AC),(Ry) <= (Ry)+(D) CF
SUBI Y,D
001 1011 0DDD DYYY
(AC) <= (Ry)+(D)B+ 1 CF
SUBI* Y,D
001 1011 1DDD DYYY
(AC),(Ry) <= (Ry)+(D)B+1 CF
ADNI Y,D
001 1100 0DDD DYYY
(AC) <= (Ry)+(D)
ADNI* Y,D
001 1100 1DDD DYYY
(AC),(Ry) <= (Ry)+(D)
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Instruction Machine Code Function Remark Flag
ANDI Y,D
001 1101 0DDD DYYY
(AC) <= (Ry) AND (D)
ANDI* Y,D
001 1101 1DDD DYYY
(AC),(Ry) <= (Ry) AND (D)
EORI Y,D
001 1110 0DDD DYYY
(AC) <= (Ry) EOR (D)
EORI* Y,D
001 1110 1DDD DYYY
(AC),(Ry) <= (Ry) EOR (D)
ORI Y,D
001 1111 0DDD DYYY
(AC) <= (Ry) OR (D)
ORI* Y,D
001 1111 1DDD DYYY
(AC),(Ry) <= (Ry) OR (D)
MRW Y,X
011 100Y YYXX XXXX
(AC),(Ry) <= (Rx)
MWR X,Y
011 110Y YYXX XXXX
(AC),(Rx) <= (Ry)
LDS X,D
010 01DD DDXX XXXX
(AC),(Rx) <= (D)
IPM X
010 0000 10XX XXXX
(AC),(Rx) <= Port(M)
MAF X
011 0001 00XX XXXX
(AC),(Rx) <= STS1 TF2 : ZERO
TF3 : CF
MSB X
010 0010 00XX XXXX
(AC),(Rx) <= STS2 B0 : BCF
B1 :
SCF1(MPT)
B2 : SCF2(HRF)
MSC X
011 0000 00XX XXXX
(AC),(Rx) <= STS3 B0 : SCF4(INT)
B1 :
SCF5(TMR)
B2 : PH15
B3 : SCF7(PDV)
STA X
010 0010 10XX XXXX
(Rx) <= (AC)
SR0 X
010 0011 00XX XXXX
(ACn),(Rxn)
(AC3),(Rx3)
<= (Rxn+1)
<= 0
SR1 X
010 0011 01XX XXXX
(ACn),(Rxn)
(AC3),(Rx3)
<= (Rxn+1)
<= 1
SL0 X
010 0011 10XX XXXX
(ACn),(Rxn)
(AC0),(Rx0)
<= (Rxn-1)
<= 0
SL1 X
010 0011 11XX XXXX
(ACn),(Rxn)
(AC0),(Rx0)
<= (Rxn-1)
<= 1
LDA X
011 0111 10XX XXXX
(AC) <= (Rx)
JB0 X
100 00XX XXXX XXXX
(PC) <= X if (AC0) = 1
JB1 X
100 01XX XXXX XXXX
(PC) <= X if (AC1) = 1
JB2 X
100 10XX XXXX XXXX
(PC) <= X if (AC2) = 1
JB3 X
100 11XX XXXX XXXX
(PC) <= X if (AC3) = 1
JNZ X
101 00XX XXXX XXXX
(PC) <= X
if AC ≠ 0
JNC X
101 01XX XXXX XXXX
(PC) <= X if (CF) = 0
JZ X
101 10XX XXXX XXXX
(PC) <= X if AC = 0
JC X
101 11XX XXXX XXXX
(PC) <= X if (CF) = 1
JMP X
110 00XX XXXX XXXX
(PC) <= X
CALL X
110 01XX XXXX XXXX
(STACK)
(PC)
<= (PC)+1
<= X
RTS
110 1000 0000 0000
(PC) <= (ST ACK)
SMS X
111 0000 000X 0000
SEF4 <= X4 M1-4 Enable HRF 0
TMS X
111 0010 00XX XXXX
TIMER <= X HRF1
SF X
111 0100 0X00 00XX
X6
X1
X0
: M-PORT Pull-Low
: BCF Set
: CF Set
BCF
CF
RF X
111 0110 0X00 00XX
X6
X1
X0
: M-PORT Low-L-H
: BCF Reset
: CF Reset
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Instruction Machine Code Function Remark Flag
X7,X6 0 , 1 1 , 0 1 , 1
Signal DC 1K/ 2K 4K Hz
Xn = 1 X5 X4 X3
Signal 1 Hz 2 Hz 4 Hz
Xn = 1 X2 X1 X0
ALM X
111 0111 XXXX XXXX
Signal 8 Hz 16 Hz 32 Hz
SIE X
111 1000 XXXX XXXX
X5-7
X0-3
: HEF1-3 i s Enabled
: IEF0-3 is Enabled
SIE* X
111 1010 0000 XXXX
X0-3 : IEF0-3 is Enabled
PLC X
111 110X XXXX XXXX
X0-3
X8
: Reset HRF0-3
: Reset PH11-15
HALT
111 1111 1111 1111
6.5 Symbol Description
AC : Accum ul ator CF : Carry Flag
ACn : Accumulator Bit N BCF : Backup Flag
Rx : Memory of Address X IEFn : Interrupt E nable Flag
Rxn : Memory B it N of Address X HEFn : Halt Release Enabl e Flag
Ry : Memory of Worki ng Register Y HRFn : Halt Rel ease Flag
D : Im mediat e Data SCFn : Start Condition Flag
PC : Program Counter Ly : LCD Latch
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