Bidirectional Communication Function (Normal Mode); Fig. 12.17 Setting Of Operation Mode 0 For Uart1; Fig. 12.18 Example Of Bidirectional Communication Connection For Uart1 - Fujitsu MB90420/5 (A) Series Hardware Manual

F2mc-16lx family 16-bit microcontrollers

Table of Contents

12.7.3 Bidirectional Communication Function (Normal Mode)

In operation modes 0 and 2, normal serial bidirectional communications using 1-to-1 connection can be

performed. For operation mode 0, the asynchronous mode is used; for operation mode 2, the synchronous

mode is used.

n Bidirectional communication function

To operate the UART in the normal mode (operation mode 0 or 2), the setting of operation mode1 of UART1

shown in Figure 12.17 is required.

bit 15 bit 14 bit 13 bit 12 bit 11 bit 10 bit 9 bit 8 bit 7

*1 : Set DDR0: bit 3, bit 5 at using UART0

¥ : Used bit

× : Unused bit

∆ : Set 0 when using input of pin

• Inter-CPU connection

Connect the two CPUs as shown in Figure 12.18.

REC RXE TXE MD1 MD0 CS2 CS1

FRE RDRF TDRE BDS

TIE Convert data set (at writing) / Receive data held (at