em78f644nso28s ELAN Microelectronics Corp, em78f644nso28s Datasheet - Page 20

• Manufacturer Part Number: em78f644nso28s
• Description: Flash Series 8-bit Microcontroller
• Manufacturer: ELAN Microelectronics Corp

EM78F648/644/642/641/548/544/542/541N
8-Bit Microcontroller
10 •
P50
P54/OSCI/RCOUT
P55/OSCO/ERCin
P57/TC3/PDO
P60//INT
P61~P63
P64~P65
P66
(CLK)
P67
(DATA)
P74/TC1
P77/TCC
P80/CO2
P81/CIN2+
P82/CIN2-
Name
4.3 EM78F642N / 542N Pin Description
Function
P61~P63
P64~P65
RCOUT
(DATA)
OSCO
ERCin
CIN2+
(CLK)
CIN2-
OSCI
PDO
TCC
CO2
TC3
/INT
TC1
P50
P54
P55
P57
P60
P66
P67
P74
P77
P80
P81
P82
Input
Type
XTAL
AN
AN
AN
ST
ST
ST
ST
ST
ST
ST
ST
ST
ST
ST
ST
ST
ST
ST
ST
ST
ST
ST
Output
CMOS
CMOS
CMOS
CMOS
CMOS
CMOS
CMOS
CMOS
CMOS
CMOS
CMOS
CMOS
CMOS
CMOS
CMOS
CMOS
CMOS
CMOS
CMOS
Type
XTAL
Bidirectional I/O pin with programmable pull-down
Bidirectional I/O pin
Clock input of crystal/ resonator oscillator
Clock output of internal RC oscillator
Clock output of external RC oscillator(open-drain)
Bidirectional I/O pin
Clock output of crystal/ resonator oscillator
External RC input pin
Bidirectional I/O pin
Timer3 clock input
Programmable divider output
Bidirectional I/O pin with programmable pull-down, open-
drain, pull-high and pin change wakeup.
External interrupt pin
Bidirectional I/O pin with programmable pull-down, open-
drain, pull-high and pin change wakeup.
Bidirectional I/O pin with programmable open-drain, pull-
high and pinchange wakeup.
Bidirectional I/O pin with programmable open-drain, pull-
high and pinchange wakeup.
CLOCK pin for Writer programming
Bidirectional I/O pin with programmable open-drain and
pull-high.
DATA pin for Writer programming
Bidirectional I/O pin with programmable pull-down and pull-
high.
Timer1 clock input
Bidirectional I/O pin with programmable pull-down and pull-
high.
Real Time Clock/Counter clock input
Bidirectional I/O pin
Output of comparator2
Bidirectional I/O pin
Non-inverting end of comparator2
Bidirectional I/O pin
Inverting end of Comparator 2
(This specification is subject to change without further notice)
Product Specification (V1.0) 05.05.2010
Description