CMOS IC
LC573718A
4-Bit Microcontroller
with 8K-Byte ROM, 512 × 4 bits RAM and LCD
D i
UnderDevelopment
Overview
The LC573718A is a CMOS 4-bit microcontroller that operates on low voltage and very low power consumption. It
also contains 8K-byte ROM, 512 × 4 bits RAM, LCD drivers and 1/100sec. chronograph function.
Features
(1) ROM:
(2) RAM:
8192 × 8 bits
512 × 4 bits
(3) Cycle Time
122µs: VDD = 2.4V to 3.6V
(4) Input / Output Terminals
- Input / Output ports:
6 terminals
- Input ports:
6 terminals (S-port : 4 terminals, M-port : 2 terminals)
- LCD common output ports: 4 terminals
- LCD segment output ports: 32 terminals
(CMOS/P-ch OD can be switched by mask option.: 16 terminals (SEG17-SEG32))
Ver:1.02
O1802
October 18 2002
Tsuchiya
1/14
LC573718A
(5) LCD driver
- Display duty:
1/3, 1/4 duty
- Display bias:
1/2, 1/3 bias
- Built-in step-up / step-down circuit
- LCD driver
Segment output terminals: (32-N) terminals
(N: the number of output terminals specified by mask option)
Common output terminals: 4 terminals
(6) Buzzer output
- 2kHz/4kHz buzzer output is possible.
- Modulation output is possible.
(7) Base timer
- Generates an overflow every 500ms for a clock application.
(8) 1/100sec. chronograph function
- Start/stop/lap: Handled by software program
(9) HALT release
- Five vectors
1. 15-bit base timer (500ms overflow output)
2. 15-bit base timer (output every 32ms)
3. S-port
4. M-port
5. 1/10 sec. pulse
(10) Stand-by mode
- HALT mode
The program operation will be stopped in this mode. This mode is released by system reset or the triggering
of any of the 5 vectors for HALT release mentioned above.
(11) System reset
- RES terminal
(12) Oscillation
32.768kHz crystal oscillation
Capacitor on output side (XT2) must be connected externally.
Capacitor in input side (XT1) must be connected externally.
(13) Power supply
- VDD2 = 2.4V to 3.6V
- VDD1 = 1.2V to 1.8V, VDD3 = 3.6V to 5.4V (LCD power supply)
(14) Shipping form
- Chip
(15) The development tool
- Emulator: TB - 573718 ( Include EVA57 )
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LC573718A
Pin Name and Coordinates
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
26
27
28
29
30
31
32
Pad
Name
SEG32
SEG31
SEG30
SEG29
SEG28
SEG27
SEG26
SEG25
SEG24
SEG23
SEG22
SEG21
SEG20
SEG19
SEG18
SEG17
SEG16
SEG15
SEG14
SEG13
SEG12
SEG11
SEG10
SEG09
SEG08
SEG07
SEG06
SEG05
SEG04
SEG03
SEG02
SEG01
Coordinates
Xµm
Yµm
-987
-877
-767
-657
-547
-437
-327
-217
-107
3
113
223
333
443
553
663
773
883
993
1103
1297
1297
1297
1297
1297
1297
1297
1297
1297
1297
1297
1297
-1365
-1365
-1365
-1365
-1365
-1365
-1365
-1365
-1365
-1365
-1365
-1365
-1365
-1365
-1365
-1365
-1365
-1365
-1365
-1365
-1330
-1098
-867
-635
-404
-172
59
290
522
753
984
1216
Pad
No.
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
Pad
Name
VSS
VSSX
XT1
XT2
VDDX
VDD2
HZ32
TST
T3
RES
ALM
S4
S3
S2
S1
M2
M1
P00
P01
P02
P03
P10
P11
VDC
VDD1
VDD3
CUP1
CUP2
COM1
COM2
COM3
COM4
Coordinates
Xµm
Yµm
1066
936
826
716
606
456
346
236
126
16
-114
-224
-334
-444
-554
-664
-774
-1297
-1297
-1297
-1297
-1297
-1297
-1297
-1297
-1297
-1255
-1255
-1255
-1255
-1255
-1255
1365
1365
1365
1365
1365
1365
1365
1365
1365
1365
1365
1365
1365
1365
1365
1365
1365
1228
997
766
535
304
73
-158
-390
-620
-834
-944
-1054
-1164
-1274
-1384
The pad coordinates are such that the chip center is taken as the origin and the values for (X, Y) represent the
coordinates of the center point of each pad.
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