EM78862C Datasheet, PDF (29/42 Pages) ELAN Microelectronics Corp – 8-Bit Microcontroller

EM78862C
8-Bit RISC Type Microprocessor
6.6 WAKE-UP
The WAKE-UP signals are as follows:
Wake-Up Signal
TCC time out
IOCF Bit0=1
Counter 1 time out
IOCF Bit1=1
Counter 2 time out
IOCF Bit2=1
INT0 pin(P70~3)
IOCF Bit3=1
INT1 pin(P74~6)
IOCF Bit4=1
INT2 pin(P77)
IOCF Bit5=1
WDT time out
Sleep Mode
RA(7,6)=(0,0)
+ SLEP
X
X
X
RESET
RESET
RESET
RESET
Idle Mode
RA(7,6)=(1,0)
+ SLEP
Wake-up+ Interrupt
+ Next instruction
Wake-up+ Interrupt
+ Next instruction
Wake-up+ Interrupt
+ Next instruction
Wake-up+ Interrupt
+ Next instruction
Wake-up+ Interrupt
+ Next instruction
Wake-up+ Interrupt
+ Next instruction
Wake-up+ next
instruction
X = No function
Green Mode
RA(7,6)=(x,0)
No SLEP
Interrupt
Interrupt
Interrupt
Interrupt
Interrupt
Interrupt
RESET
Normal Mode
RA(7,6)=(x,1)
No SLEP
Interrupt
Interrupt
Interrupt
Interrupt
Interrupt
Interrupt
RESET
6.7 Oscillator
The oscillator system is used to generate the device clock. The oscillator system is
composed of an RC or crystal oscillator and a PLL oscillator as illustrated below.
OSCI
OSCO
32.768khz
RC/Crystal
OSC
Fosc ₀
PLL ^FPLL 1
Fsystem
"OSC_SEL "bit _{PLL_EN}
of code option
Fig. 10 Oscillator and PLL Function Block
NOTE
1. Under RC oscillator mode, the pull-up resistor that connects to OSCI pin and OSC0
pin should be floating.
2. Under 32.768kHz crystal oscillator mode, the crystal is connected between OSCI
pin and OSCO pin. A 20~30pF capacitor should be connected between each of
the pins and ground.
Product Specification (V2.1) 07.13.2005
(This specification is subject to change without further notice)
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