Serial Interfaces
Connecting the Serial Interfaces
Panasonic Semiconductor Development Company MN102H75K/F75K/85K/F85K LSI User Manual
128
Panasonic
5.3 Connecting the Serial Interfaces

Figures 5-2, 5-3, and 5-4 illustrate six different methods of connecting the serial

interface.

5.3.1 Synchronous Serial Mode Connections

See section 11, “I/O Ports,” for
details on setting up the SBT
port.

Figure 5-2 shows serial port connections for either simplex or full-duplex syn-

chronous serial transfers.

5.3.2 UART Mode Connections

Figure 5-3 shows serial port connections for either simplex or full-duplex UART

transfers.

5.3.3 I2C Mode Connection

The serial interfaces can connect to I2C slave transmitters or receivers. For this

mode, always pull up the SBO and SBT pins to VDD. Either connect a pullup

resistor externally or turn on the internal one by setting the PPLU register.

A. Simplex Connection B. Full-Duplex Connection
Figure 5-2 Synchronous Serial Mode Connections
A. Simplex Connection B. Full-Duplex Connection
Figure 5-3 UART Mode Connections
Figure 5-4 I2C Mode Connection
SBO
SBI
SBO
SBI
SBT SBT
Transmit
Receive
SBO
SBI
SBO
SBI
Transmit/receive
SBT SBT
Transmit/receive
SBO
SBI
SBO
SBI
Transmit
Receive
SBO
SBI
SBO
SBI
Transmit/receive
Transmit/receive
SBO
SBT
Master
transmitter/
receiver
Slave
transmitter/
receiver
MN102H75K Slave
transmitter/
receiver