M38B53M4-059FP datasheet(148/355 Pages) MITSUBISHI

tên linh kiện	M38B53M4-059FP

Giải thích chi tiết về linh kiện	8-BIT SINGLE-CHIP MICROCOMPUTER

PDF	355 Pages

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nhà sản xuất	MITSUBISHI [Mitsubishi Electric Semiconductor]

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148 / 355 page

2-60

38B5 Group User’s Manual

APPLICATION

2.3 Serial I/O

Fig. 2.3.35 Registers setting relevant to transmission side

Figure 2.3.35 shows the registers setting relevant to the transmission side, and Figure 2.3.36 shows

the registers setting relevant to the reception side.

Transmission side

BRG

0716

INTEDGE

SIO2STS

UART control register (address 001716)

UARTCON

P55/TxD pin: CMOS output

BRG clock: f(XIN)

Serial I/O2 clock: SCLK21

1 1

0 1

0 0

SIO2CON

Serial I/O2 status register (address 001E16)

Transmit buffer empty flag

• Confirm that the data has been transferred from Transmit buffer

• When this flag is “1”, it is possible to write the next transmission

data in to Transmit buffer register.

Transmit shift register shift completion flag

Confirm completion of transmitting 1-byte data with this flag.

“1” : Transmit shift completed

Serial I/O2 control register (address 001D16)

BRG count source: f(XIN)

Synchronous clock: BRG/4

SRDY2 output not used

Transmit enabled

Receive disabled

Clock synchronous serial I/O

Serial I/O2 enabled

Interrupt edge selection register (address 003A16)

INT0 falling edge active

Baud rate generator (address 001616)

Set “division ratio – 1”

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