EM78P468N datasheet(21/82 Pages) EMC

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EM78P468N

8-BIT Microcontroller

Product Specification (V1.2) 03.15.2005

• 17

(This specification is subject to change without further notice)

CPU Operation Mode

RESET

Code option

HLFS=1

Green Mode

fm:stop

fs:oscillation

CPU: using fs

Normal Mode

fs:oscillation

fm:oscillation

CPU: using fosc

IDLE Mode

fm:stop

CPU: stop

fs:oscillation

SLEEP M

Fm:stop

Fs: stop

CPU: stop

ode

IDLE

IDLE="0"

="1"

wakeup

SLE

SLEP

Wake up

CPUS="1"

CPUS="0"

Code option

HLFS=0

The w ake up time from idle to green

s 16*1/fs

mode i

The w ake up tim

approximately su

e from sleep to green mode is

b-oscillator setup time +18ms+16*1/fs

it must delay

oscillation stable w hile your system timing

control is conscienti

4.1.15

RE/IRCR (IR and PORT 5 Setting Control Register)

a little times for the main

ous

Fig. 5 CPU Operation Mode

(Address: 0Eh)

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

IRE

LGP

OUTE

TCCE

INT1

EINT0

Bit 7 (IRE):

Infrared Remote Enable bit

pin is determined

r PWM function.

n. IROUT

e time as determined by

ly. The counter 2 is an

independent auto reload timer.

HF = “1” :

For IR application mode, enable H/W modulator function, the low time

lated with the frequency Fcarrier. The

LGP = “1” :

The high-pulse width timer register is ignored. So the IROUT

waveform is dependent on low-pulse width timer register only.

IRE = “0” :

Disable IR/PWM function. The state of P5.7/IROUT

by bit 7 of IOC 50 if it’s for IROUT.

IRE = “1” :

Enable IR o

Bit 6 (HF) :

High carry frequency.

HF = “0” :

For PWM application, disable H/W modulator functio

waveform is created according to high-pulse and low-puls

the high pulse and low pulse width timers respective

sections of the generated pulse is modu

frequency of Fcarrier provide by counter 2.

Bit 5 (LGP) :

IROUT for long time of low pulse.

LGP = “0” :

The high-pulse width timer register and low-pulse width timer is vali

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