Rohm LAPIS SEMICONDUCTOR ML620Q503, User Manual

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ML620Q503/Q504 User’s Manual
Chapter 1 Overview
FEUL620Q504 1–10
1.3.3 Description of Pins
In the table below indicates the functional pin description.
The pin name represents the function pin name of the primary function of each terminal, The pin mode represents the set
of mode register of Port Control.
(1
st
:primary function, 2
nd
:secondary function, 3
rd
: tertiary function, 4
th
: quartic function)
Pin name I/O Description LSI pin name Pin mode Logic
System
RESET_N I
Reset input pin. When this pin is set to a “L” level,
system reset mode is set and the internal section is
initialized. When this pin is set to a “H” level
subsequently, program execution starts. A pull-up
resistor is internally connected. RESET_N
– L
XT0 I
Crystal connection pin for low-speed clock.
Capacitors C
DL
and C
GL
are connected across this pin
and V
SS
as required.
PXT0
1st –
XT1 O
PXT1
1st –
LSCLKI I
External clock input for Low-speed clock. PXT1
1st –
OSC0 I
Crystal/ceramic connection pin for high-speed clock
(16 MHz max.). Capacitors C
DH
and C
GH
are
connected across this pin and V
ss
.
P10
1st –
OSC1 O P11 1st –
CLKIN I External clock input for High-speed clock. P11 1st –
LSCLKO O Low-speed clock output pin.
P46,P56
2nd –
OUTCLK O High-speed clock output pin.
P47,P57
2nd –
General-purpose input/output port
PXT0-PXT1 I
General-purpose input port(without pull-up/pull-down
resister).
PXT0-PXT1 1st –
P00-P05 I/O General-purpose input/output port. P00-P05 1st –
P10-P11 I/O General-purpose input/output port. P10-P11 1st –
P20-P23 I/O General-purpose input/output port. P20-P23 1st –
P30-P37 I/O General-purpose input/output port. P30-P37 1st –
P40-P47 I/O General-purpose input/output port. P40-P47 1st –
P50-P57 I/O General-purpose input/output port. P50-P57 1st –
External interrupt
EXII0-EXII1
EXI00-05
EXI20-23
EXI30-37
EXI40-47
EXI50-57
I
External maskable interrupt input pins. It is possible, for
each bit, to specify
whether the interrupt is enabled and select the interrupt
edge by software.
PXT0-PXT1
P00-P05
P20-P23
P30-P37
P40-P47
P50-P57
1st H/L
LED
LED O N-channel open drain output pins to drive LED. P40,P41,P52,P53 1st –
Melody/Buzzer
MD0 O Melody/buzzer signal output pin. P33,P43,P53 2nd H