Rohm LAPIS SEMICONDUCTOR ML620Q503, User Manual

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ML620Q503/Q504 User's Manual
Chapter 20 Port 3
FEUL620Q504 20–1
20 Port 3
20.1 General Description
This LSI includes an 8-bit input/output port, port 3 (P30 to P37).
It can function as an external interrupt, a successive approximation type A/D converter input, and a comparator
input, as well as an I
2
C bus, a buzzer output, a synchronous serial port, a synchronous serial port with FIFO, a
UART, a UART with FIFO, and a timer out output pin as the secondary, tertiary, or quartic function.
FTM: Chapter 9 “Function Timer”
SSIO: Chapter 11 “Synchronous Serial Port”
SSIOF: Chapter 12 “SSIO with FIFO”
UART: Chapter 13 “UART”
UARTF: Chapter 14 “UART with FIFO”
I
2
C : Chapter 15 “I
2
C Bus Interface”
MELODY: Chapter 23 “Melody Driver”
SA-ADC:
Chapter 25 “Successive approximate type A/D converter”
COMP : Chapter 26 “Analog Comparator”
20.1.1 Features
•
Allows selection of high-impedance output, P-channel open drain output, N-channel open drain output, or
CMOS output for each bit in output mode.
•
Allows selection of high-impedance input, input with a pull-down resistor, or input with a pull-up resistor
for each bit in input mode.
•
Can be used as an external interrupt pin (EXI30, EXI31, EXI32, EXI33, EXI34, EXI35, EXI36, EXI37),
a successive approximation type A/D converter pin (AIN0/1/2/3), a comparator input (CMP0P/M,
CMP1P/M), an I
2
C bus pin (SDA0/1, SCL0/1), a buzzer output (MD0), a synchronous serial port pin
(SIN0, SCK0, SOUT0), a synchronous serial port with FIFO pin (SINF0, SCKF0, SOUTF0, SSF0), a
UART pin (RXD0, TXD0), a UART with FIFO pin (RXDF0, TXDF0), or a timer out pin
(TMOUT4/5/6/7).