Rohm LAPIS SEMICONDUCTOR ML620Q503, User Manual

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ML620Q503/Q504 User's Manual
Chapter 21 Port 4
FEUL620Q504 21-1
21 Port 4
21.1 General Description
This LSI includes an 8-bit input/output port, port 4 (P40 to P47).
It can function as an external interrupt, as well as an I
2
C bus, a buzzer output, low/high speed clock 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.
CLOCK : Chapter 6 “Clock Generation Circuit”
TIMER: Chapter 8 “Timers”
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”
21.1.1 Features
•
Direct LED drive is available.
•
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 (EXI40, EXI41, EXI42, EXI43, EXI44, EXI45, EXI46, EXI47),
Timer clock input (TMCKI0/1, TMCKI2/3), a Low speed clock output pin (LSCLKO), a high speed
clock output pin (OUTCLK), 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 FTM
output pin (TMOUT8/9/A/B).