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M38197E

SINGLE-CHIP 8-BIT MICROCOMPUTER

MITSUBISHI ELECTRIC  

SERIAL I/O

The 3819 group has built-in 8-bit clock synchronized serial I/O ! 3

channels (serial I/O1, serial I/O2, and serial I/O3).

Serial I/O1 builds in the automatic transfer function. The function

can be switched to the serial I/O ordinary mode with the serial I/O

automatic transfer control register (address 001A16).

Serial I/O2 and Serial I/O3 can be used only in the serial I/O ordi-

nary mode.

The I/O pins of the serial I/O function are also used as I/O ports

P5 and P64–P67, and their operation is selected with the serial I/O

control registers (addresses 001916, 001D16, and 001E16).

Serial I/O Control Registers

(SIO1CON, SIO2CON, SIO3CON)

001916, 001D16, 001E16

Each of the serial I/O control registers (addresses 001916,

001D16, and 001E16) consists of 8 selection bits which control the

serial I/O function.

MITSUBISHI MICROCOMPUTERS

3819 Group

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

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