EM78P468LAQ EMC [ELAN Microelectronics Corp], EM78P468LAQ Datasheet - Page 22

• Manufacturer Part Number: EM78P468LAQ
• Description: 8-BIT Microcontroller
• Manufacturer: EMC [ELAN Microelectronics Corp]

EM78P468L
8-BIT Microcontroller
18 •
it must delay a little times for the main
oscillation stable w hile your system timing
control is conscientious
Fm:stop
Fs: stop
CPU: stop
SLEEP Mode
The w ake up time from sleep to green mode is
approximately sub-oscillator setup time +18ms+16*1/fs
CPU Operation Mode
4.1.15
Bit 7 (IRE): Infrared Remote Enable bit
Bit 6 (HF) : High carry frequency.
Bit 5 (LGP) : IROUT for long time of low pulse.
Bit 7
IRE
IRE = “0” : Disable IR/PWM function. The state of P5.7/IROUT pin is determined
by bit 7 of IOC 50 if it’s for IROUT.
IRE = “1” : Enable IR or PWM function.
HF = “0” : For PWM application, disable H/W modulator function. IROUT
waveform is created according to high-pulse and low-pulse time as determined by
the high pulse and low pulse width timers respectively. The counter 2 is an
independent auto reload timer.
HF = “1” : For IR application mode, enable H/W modulator function, the low time
sections of the generated pulse is modulated with the frequency Fcarrier. The
frequency of Fcarrier provide by counter 2.
LGP = “0” : The high-pulse width timer register and low-pulse width timer is valid.
LGP = “1” : The high-pulse width timer register is ignored. So the IROUT
waveform is dependent on low-pulse width timer register only.
(Address: 0Eh)
RE/IRCR (IR and PORT 5 Setting Control Register)
Wake up
IDLE="0"
SLEP
Bit 6
HF
CPUS="1"
Fig. 5 CPU Operation Mode
Bit 5
LGP
fm:stop
fs: oscillation
CPU: using fs
fm:oscillation
fs: oscillation
CPU: using fosc
Normal Mode
Green Mode
Bit 4
--
(This specification is subject to change without further notice)
CPUS="0"
IROUTE
Bit 3
Product Specification (V1.0) 03.15.2006
Code option
HLFS=1
IDLE="1"
SLEP
w ake up
The w ake up time from idle to green
mode is 16*1/fs
TCCE
Bit 2
RESET
Code option
HLFS=0
fm:stop
fs: oscillation
CPU: stop
EINT1
Bit 1
IDLE Mode
EINT0
Bit 0