LC573706A
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LC573706A Terminal Description
Name Pin No. I/O Function Description Option
VSS 37, 38 - Power terminal (−) -
VDD2 42 - Power terminal (+).
Insert Capacitor between VDD2 and VSS -
CUP1 59 - Capacitor conn ect in g ter minal s for step-up / stop down -
CUP2 60 - Capacitor conn ect in g ter minal s for step-up / stop down
VDD1,VDD3 61, 6 2 - P ower su p p l y for dr i v i n g LC D -
VDC 58 - Powe r sup p l y fo r in t e rn al logi c ci r cu i t -
P0
P00 - P01
54, 55 I/O •2-bit I/O port
•I/O programmable in port unit
•In input mode, built-in pull-up resistor: ON
•While in output mode with P-ch OD selected, a built-in
circuit inhibits the input terminal from floating.
Out p u t fo rm
CMOS/
Pch-OD (No t e 1 )
P1
P10 - P11
56, 57 I/O •2-bit I/O port
•I/O programmable in port unit
•In input mode, built-in pull-up resistor: ON
•While in output mode with P-ch OD selected, a built-in
circuit inhibits the input terminal from floating.
Out p u t fo rm
CMOS/
Pch-OD (No t e 1 )
S port
S1 - S4
51 -
48 I •4-bit input port
•Input for HALT release
•Built-in programmable pull-down resistor
M port
M1 - M2
53, 52 I •2-bit input port
•Input for HALT release
•Built-in programmable pull-down resistor
ALM 47 O •Output port
•Alarm output only terminal
•4kHz and 2kHz signals output by instructions SAS and
TME L
COM1 -
COM4 63 -
66 O LCD ou tpu t t e r min a l s for co m mo n -
SEG1 -
SEG40 36 - 1
70 -
67
O LCD output terminals for segment
RES 46 I •Reset
•Built-in pull-down resistor -
T3 45 O •Test terminal
•This terminal should be left unconnected. -
HZ32 43 •Test terminal
•This terminal should be left unconnected. -
XT1 39 I Input for 32.768kHz crystal oscillation -
XT2 40 O Output for 32. 768 kHz cr ystal o sci llat io n -
Note 1: P-ch OD: P channel open drain
Port
’
s option is specified for each port individually.
* A state of port at initial
Name I/O Pull-up / Pull-down Resistor Status
P0, 1 I Pull-up resistor
S, M_PORT I Programmable pull-up resistor ON
Name Output Level
COM1-COM4 VSS (display OFF)
SEG1-SEG40 VSS (display OFF)