em78f644nso28s ELAN Microelectronics Corp, em78f644nso28s Datasheet - Page 21

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

Legend: ST: Schmitt Trigger input, AN: analog pin, CMOS: CMOS output,
Product Specification (V1.0) 05.05.2010
(This specification is subject to change without further notice)
P83/RESET
(/RESET)
VDD
VSS
P50
P54/OSCI/RCOUT
P55/OSCO/ERCin
P57/TC3/PDO
P60//INT
P61~P63
P64~P65
P80/CO2
P81/CIN2+
(DATA)
Name
Name
XTAL: oscillation pin for crystal/ resonator
(Continuation)
4.4 EM78F641N / 541N Pin Description
Function
Function
(/RESET)
P61~P63
P64~P65
/RESET
RCOUT
(DATA)
OSCO
ERCin
CIN2+
OSCI
VDD
PDO
VSS
CO2
TC3
/INT
P83
P50
P54
P55
P57
P60
P80
P81
Input
power
power
Input
Type
Type
XTAL
AN
AN
ST
ST
ST
ST
ST
ST
ST
ST
ST
ST
ST
ST
ST
ST
ST
Output
Output
CMOS
CMOS
CMOS
CMOS
CMOS
CMOS
CMOS
CMOS
CMOS
CMOS
CMOS
CMOS
CMOS
CMOS
Type
Type
XTAL
Bidirectional I/O pin
Internal pull-high reset pin
/RESET pin for Writer programming
Power
Ground
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 pin change wakeup.
Bidirectional I/O pin
Output of comparator2
Bidirectional I/O pin
Non-inverting end of comparator2
DATA pin for Writer programming
EM78F648/644/642/641/548/544/542/541N
Description
Description
8-Bit Microcontroller
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