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Table 2 (b) Pin Description for Package of QFP44 and LQFP44
Symbol
Pin No.
P5.4/INT0
P5.5/INT1
P5.6/TCC
P5.7/IROUT
P6.0~P6.7
COM3~0
SEG11~SEG14
SEG16/P7.0
SEG17/P7.1
~
SEG23/P7.7
SEG24/P8.0
~
SEG31/P8.4
VB
VA
VLCD2
VLCD3
/RESET
R-OSCI
OSCO
Xin
Xout
VDD
GND
Product Specification (V1.5) 02.15.2007
(This specification is subject to change without further notice)
Type
1-bit General purpose input/output pin/external interrupt.
The INT0 interrupt source can be set to falling or rising edge by
21
I/O
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.
The Interrupt source is a falling edge signal.
22
I/O
Wakes up from sleep mode and idle mode when the pin status
changes.
1-bit General purpose input/output pin/external counter input.
23
I/O
This pin works in normal/green/idle mode.
1-bit General purpose input/output pin/IR/PWM mode output pin
24
I/O
This pin is capable of sinking 20mA/5V.
8-bit General purpose input/output pins
Pull-high, pull-low and open drain function supported.
25~32
I/O
All pins can wake up from sleep and idle modes when the pin
status changes.
6~9
O
LCD common output pin.
5~2
O
LCD segment output pin.
1
44
LCD segment output pin.
O/(I/O)
~
Can be shared with general purpose I/O pin
38
LCD segment output pin. Can be shared with general I/O pin
37
For general purpose I/O use, can wake up from sleep mode and
~
O/(I/O)
idle mode when the pin status changes.
33
For general purposes I/O use, supports pull-high function.
10
O
Connect capacitors for LCD bias voltage.
11
O
Connect capacitors for LCD bias voltage.
12
O
One of LCD bias voltage.
13
O
One of LCD bias voltage.
General-purpose Input only
14
I
Low active. If it remains at logic low, the device will be reset.
In Crystal mode: crystal input
In RC mode: resistor pull high.
16
I
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
17
O
In RC mode: instruction clock output
In Crystal mode: Input pin for sub-oscillator. Connect to a
19
I
32.768kHz crystal.
In Crystal mode: Connect to a 32.768kHz crystal.
20
o
In RC mode: instruction clock output
18
I
Power supply
15
I
System ground pin
EM78P468N/EM78P468L
8-Bit Microcontroller
Function
• 5
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