IZ5851V
1
CMOS
4-
BIT SINGLE
-
CHIP APPLICATION
-
ORIENTED
MICROCOMPUTER WITH
LCD
DRIVER
(
prototype LC5851N SANYO
).
DESCRIPTION
The IZ5851 is a CMOS 4-bit single chip microcomputer that operate on low voltage, very
low current and contain LCD drivers.
It also contain a 4 bit parallel processing ALU, a program memory ROM, data memory
(RAM),input & output port, Timer, many LCD segments outputs,
a prescaler, and a clock generator. A total of 79 instruction, including the operation and
processing instructions executable in 4 bits units, various conditional branch instructions
and LCD drivers data transfer instructions, from an easy- to-use and effective instruction
system.
FEATURES
Supply voltage 1.5 or 3 V
(Mask option selectable)
Current dissipation 5.0 A Typ
(Ag Battery ,32 kHz
crystal oscillation)
Output pins for LCD drive 25
Input port pin 2 ports/8 pins
Input/Output port pin 2 ports/8 pins
Output port pin 1 ports/4 pins
Control output terminal 2 pins
ROM 1024 15 bit
.RAM 64 4 bit
Cycle Time 32.768 kHz
crystal :244
s
Instruction set 79 instructions
Interrupt function .
.. External source 2
.. Internal source 2
ABSOLUTE MAXIMUM RATINGS (V
DD
= 0V, Ta=25
C)
Item Symbol
Condition/Terminal
Rating
Unit
Maximum Supply
Voltage
V
SS1
V
SS2
-4.0
-4.0
V
V
Maximum input
Voltage
Vin1 S1-4,M1-4,I/OA1-4,I/OB1-
4,INT,TESTA,OSCIN,RES,BAK
Vss1-0.3
V
Operating
Temperature
T
a
-0 ~ + 55
o
C
ESD (HBM)
200
V
ALLOWABLE OPERATING CONDITIONS (Ta = 25
o
C, V
DD
= 0V)
Item Symbol
Condition/Terminal
min max
Unit
Supply Voltage
V
SS1
V
SS2
VBAK=Vss1 -1.65
-3.3
-1.3
-2.4
V
V
Input H-level
Voltage
Vih S1-4,M1-4,I/OA1-4,I/OB1-
4,INT
-0.2 0
V
Input L-level
Voltage
Vil S1-4,M1-4,I/OA1-4,I/OB1-
4,INT
Vss1 Vss1+0.2
V
Operating
Frequency
fop
Ta =0 ~ + 55
C
32 33
kHz
IZ5851V
2
ELECTRICAL CHARACTERISTICS at Ta=25+-2
C VDD=0V
Item Symbol Condition/Terminal
min max
Unit
Input Resistance
Rin1B
Rin2A
Rin3
Vss1=-1.55V.pull-down resistor
Vss1=-1.55V.pull-up resistor
Vih=Vss1 INT
Vss1=-1.55V.pull-down resistor
Vih=Vdd for RES
200
200
5
2000
2000
50
K
K
K
Output H-level
Voltage
Voh1 Vss1=-1.35V.ALM.LIGHT
Ioh=-250mkA
-0.65 V
Output L-level
Voltage
Vol1 Vss1=-1.35V.ALM.LIGHT
Iol=250mkA
Vss1+0.65
V
Output H-level
Voltage
Voh2 Vss1=-1.55V.I/OA1-4,I/OB1-4,P1-4
Ioh=-20mkA
-0.2 V
Output L-level
Voltage
Vol2 Vss1=-1.55V.I/OA1-4,I/OB1-4,P1-4
Iol=20mkA
Vss1+0.2
V
Output H-level
Voltage
Voh3 Vss1=-1.55V.all
SEGOUTs
Ioh=-0.4mkA
-0.2 V
Output L-level
Voltage
Vol3 Vss1=-1.55V.all
SEGOUTs
Iol=0.4mkA
Vss2+0.2
V
Output H-level
Voltage
Voh4 Vss1=-1.55V.COM1.COM2.COM3
Ioh=-4mkA
-0.2 V
Output L-level
Voltage
Vol4 Vss1=-1.55V.COM1.COM2.COM3
Iol=4mkA
Vss2=0.2
V
Output M-level
Voltage
Vom Vss1=-1.55V.COM1.COM2.COM3
Iol=4mkA,Ioh=-4mkA
Vss1-0.2 Vss1+0.2 V
Output voltage
LCD
Lighting:1/3Bias
Method (doubler)
Vss2 Vss1=-1.35V.fopg=32.768KHz
C1=C2=0.1
F
-2.5
V
Supply Current
Idd
Vss1=-1.55V.HALT mode
C1=C2=0.1
F,Rs=25 K
Cg=20pF,32.768KHz X
tal
10
A
Oscillation Start
Voltage
Vss1
Vstt
Cg=20pF
Rs=25 K
,32.768KHz Xtal
-1,35
V
Oscillation Hold
Voltage
Vss1
Vhold
Cg=20pF Rs=25K
32.768KHz X
tal
-1,6 -1,3 V
Oscillation Start
Time
Tstt
Vss1=-1.35V. Rs= 25K
32.768kHz X
tal
10
sec
IZ5851V
3
TERMINAL DESCRIPTION
Terminal Name
Function
OSCIN
Terminals for crystal oscillator
OSCOUT
Terminals for crystal oscillator
10P
Used as an oscillation phase compensating
S1 - S4
Input-only port
M1 - M4
Input terminals for writing data in RAM
I/O B1
I/O B2
I/O B3
I/O B4
Input/output port
I/O A1
I/O A2
I/O A3
I/O A4
Input/output port
P1 - P4
Output-only port
INT
Control input port for external interrupt request
BAK
Supply voltage terminal for the logic section of LSI circuit
LIGHT
Suitable for delivering signal to drive high-current driving
transistor
ALM Output-only
port
RES
System reset terminal
Vdd
Supply voltage terminal(+)
Vss1
Supply voltage terminal(-)
Vss2
Vss3
Terminals are used as the source supply for the LCD drivers
CUP1
CUP2
Connection terminals for voltage doubler capacitor
COM1
COM2
COM3
Output terminal vor common plate of LCD
SEGMENT drivers
Output for LCD
TEST
TEST
TESTA
TEST
Terminal for test (not used by the users)
IZ5851V
4
P1
COM1
P2
COM1
P3
COM1
P4
A1 in/out
SEGout
A1 in/out
A1 in/out
A1 in/out
RES
M1
M1
VDD
M1
M1
Vss1
Vss2
OSCin
Vss3
OSCout
S1
CUP1
CUP2
S2-S4
ALM
KEY MATRIX
20pF
32768kHz
LCD
1/2BIAS,
1/3 DUTY
25x3=75max
+ 1.5
V
0.1
F
0.1
F
PAD DIAGRAM
60
61
59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44
43
63
62
64
65
66
67
1
2
3
4
5
6
7
8
9
11
10
12 13 14 15 16 17 18 19 20 21 22 23 24 25 26
41
42
40
39
38
37
35
34
33
32
31
30
29
28
27
36
M odel I Z5851
PAD DI AGRAM
Chip Size : 3900 x 3600
Pad Size : 120 x 120
Unit :
m
IZ5851V
5
PAD LOCATION
PAD N
PAD
NAME
X
Y
PAD N
PAD
NAME
X
Y
PAD N
PAD
NAME
X
Y
1 Vdd
215
1689
24
M2 3045
237
47 SEG8
2810
3360
2 BAK
224
1509
25
M3 3225
237
48 SEG9
2630
3360
3 Vss1
224
1329
26
M4 3405
237
49 SEG10
2450
3360
4 Vss2
224
1149
27
TESTA
3677
237
50 SEG11
2270
3360
5 ALM 224 964 28 TEST 3677
414
51 SEG12
2090 3360
6 LIGHT
224 784 29 CUP1 3677
604
52 SEG13
1910 3360
7 S4 224 595 30 CUP2 3677
779
53 SEG14
1730 3360
8 S3 224 420 31 S2
3677
959
54 SEG15
1550 3600
9 A1 224 237 32 S1
3677
1141
55 SEG16
1370 3360
10 A2 520 237 33 Vdd 3677
1327
56 SEG17
1190 3360
11 A3 714 237 34 OSCIN 3677
1506
57 SEG18
1010 3360
12 A4 880 237 35 10P 3677
1687
58 SEG19
830 3360
13 B1 1074
237
36 OSCOUT
3677
1872
59 SEG20
650 3360
14 B2 1241
237
37 COM1
3677
2055
60 SEG21
470 3360
15 B3 1433
237
38 SEG1
3677
2242
61 SEG22
290 3360
16 B4 1600
237
39 SEG2
3677
2422
62 SEG23
247 2882
17 RES
1784
237
40 SEG3
3677
2602
63 SEG24
229 2628
18 INT 1965
237
41 SEG4
3677
2783
64 SEG25
229 2367
19 P1 2147
237
42 TEST42
3677
3180
65 COM3
224 2235
20 P2 2325
237
43 TEST43
3677
3360
66 COM2
224 2050
21 P3 2505
237
44 SEG5
3350
3360
67 Vss3
224 1865
22
P4
2705
237
45
SEG6
3170
3360
23
M1
2865
237
46
SEG7
2990
3360
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