EM78P468N/EM78P468L
8-Bit Microcontroller
5 Pin Description
Table 1 (a) Pin Description for Package of QFP64 and LQFP64
Symbol
Pin No.
Type
Function
1-bit General purpose input/output pin/external interrupt.
INT0 interrupt source can be set to falling or rising edge by IOC71
register Bit 7 (INT_EDGE).
Wakes up from sleep mode and idle mode when the pin status
changes.
1-bit General purpose input/output pin/external interrupt.
Interrupt source is a falling edge signal.
Wakes up from sleep mode and idle mode when the pin status
changes.
1-bit General purpose input/output pin/external counter input.
This pin works in normal/green/idle mode.
1-bit General purpose input/output pin/IR/PWM mode output pin.
This pin is capable of sinking 20mA/5V.
8-bit General purpose input/output pins.
Pull-high, pull-low and open drain function supported.
All pins can wake up from sleep and idle modes when the pin
status changes
LCD common output pin.
LCD segment output pin.
LCD segment output pin.
Can be shared with general purpose I/O pin
LCD segment output pin. Can be shared with general I/O pin.
For general purpose I/O use, can wake up from sleep mode and
idle mode when the pin status changes.
For general purpose I/O use, supports pull-high function.
Connect capacitors for LCD bias voltage.
Connect capacitors for LCD bias voltage.
One of LCD bias voltage.
One of LCD bias voltage.
General-purpose Input only
Low active. If it remains at logic low, the device will be reset.
In Crystal mode: crystal input
In RC mode: resistor pull high.
In PLL mode: connect 0.01µF capacitance to GND
Connect 0.01µF capacitor to GND and code option select PLL
mode when high oscillator is not use
In Crystal mode: crystal input
In RC mode: instruction clock output
In Crystal mode: Input pin for sub-oscillator. Connect to a
32.768kHz crystal.
In Crystal mode: Connect to a 32.768kHz crystal.
In RC mode: instruction clock output
No connection
Power supply
System ground pin
P5.4/INT0
32
I/O
P5.5/INT1
33
I/O
P5.6/TCC
P5.7/IROUT
34
37
I/O
I/O
P6.0~P6.7
COM3~0
SEG0~SEG15
SEG16/P7.0
~
SEG23/P7.7
SEG24/P8.0
~
SEG30/P8.6
SEG31/P8.7
VB
VA
VLCD2
VLCD3
/RESET
38~45
17~20
16~1
64
~
57
56
~
50
46
21
22
23
24
25
I/O
O
O
O/(I/O)
O/(I/O)
O
O
O
O
I
R-OSCI
27
I
OSCO
Xin
Xout
NC
VDD
GND
4
•
28
30
31
35~36
47~49
29
26
O
I
o
−
I
I
Product Specification (V1.5) 02.15.2007
(This specification is subject to change without further notice)
EMC [ ELAN MICROELECTRONICS CORP ]
