Overview; Serial Port Configuration - Oki ML63611 User Manual

12. Serial Port (SIO)
12.1

Overview

The ML63611 has a built-in serial communication port (serial port) for either synchronous or asynchronous
communication.
The serial port implements the send and receive circuits in independent circuits, making it possible to send and
receive simultaneously.
The send and receive modes can be UART mode (asynchronous communication mode) or synchronous mode
(synchronous communication mode).
In synchronous mode an internal clock mode generates the shift clock internally, and an external clock mode
receives an external shift clock.
Table 12-1 shows the serial port modes.
12.2

Serial Port Configuration

Figure 12-1 indicates the serial port configuration.
The serial port consists of the send/receive clock generator circuits, the send/receive control registers, the buffer
registers to store send/receive data, send/receive data transfer shift registers, and the send/receive status registers.
PC.0/RXD is the send serial data input pin, PC.3/TXD is the send serial data output pin, PC.1/TXC is the serial
send clock I/O pin, and PC.2/RXC is the serial receive clock I/O pin. Set I/O and secondary functions with the
port control registers as needed for each communication mode.
OPTION A (C): 1.5 V (3.0 V), Without regulator
circuit for LCD bias
Table 12-1 Serial Port Modes
Mode
UART mode
Internal clock mode
Synchronous
mode
External clock mode
UART mode
Internal clock mode
Synchronous
mode
External clock mode
Baud rate
Can be set to a user-specified value
with timers 2, 3 (TM2, 3)
32.768 kHz
From external clock
• 9600 bps
• 4800 bps
• 2800 bps
• 1200 bps
32.768 kHz
From external clock
12 – 1
OPTION B (D): 1.5 V (3.0 V), With regulator
ML63611 User's Manual
Chapter 12 Serial Port (SIO)
circuit for LCD bias