DS80C320-END datasheet(21/175 Pages) DALLAS

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High-Speed Microcontroller User’s Guide

21 of 175

Power Control (PCON)

SFR 87h

SMOD_0

SMOD0

GF1

GF0

STOP

IDLE

RW-0

R=Unrestricted Read, W=Unrestricted Write, -n=Value after Reset

SMOD_0

Bit 7

Serial Port 0 Baud Rate Doubler Enable. This bit enables/disables the

serial baud rate doubling function for Serial Port 0.

0 = Serial Port 0 baud rate will be that defined by baud rate generation

equation.

1 = Serial Port 0 baud rate will be double that defined by baud rate generation

equation.

SMOD0

Bit 6

Framing Error Detection Enable.

This bit selects function of the

SCON0.7 and SCON1.7 bits.

0 = SCON0.7 and SCON1.7 control the SM0 function defined for the

SCON0 and SCON1 registers.

1 = SCON0.7 and SCON1.7 are converted to the Framing Error (FE) flag for the

respective Serial Port.

Bits 5-4

Reserved. Read data is indeterminate.

GF1

Bit 3

General Purpose User Flag 1. This is a general purpose flag for software

control.

GF0

Bit 2

General Purpose User Flag 0. This is a general purpose flag for software

control.

STOP

Bit 1

Stop Mode Select. Setting this bit will stop program execution, halt the CPU

oscillator, and internal timers, and place the CPU in a low-power mode. This bit

will always be read as a 0. Setting this bit while the Idle bit is set will place the

device in an undefined state.

IDLE

Bit 0

Idle Mode Select. Setting this bit will stop program execution but leave the

CPU oscillator, timers, serial ports, and interrupts active. This bit will always be

read as a 0.

DS80C320-END Datasheet(PDF) 21 Page - Dallas Semiconductor

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