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EM78P159N Datasheet(PDF) 8 Page - ELAN Microelectronics Corp

Part # EM78P159N
Description  8-Bit Microcontroller with OTP ROM
Download  48 Pages
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Manufacturer  EMC [ELAN Microelectronics Corp]
Direct Link  http://www.emc.com.tw
Logo EMC - ELAN Microelectronics Corp

EM78P159N Datasheet(HTML) 8 Page - ELAN Microelectronics Corp

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EM78P159N
8-Bit Microcontrollerwith OTP ROM
4
Product Specification (V1.0) 03.10.2006
(This specification is subject to change without further notice)
3.1
EM78P159NP and EM78P159NM Pin Description
Symbol
Pin No.
Type
Function
VDD
14
-
■ Power supply
P56/OSCI
16
I/O
■ General-purpose I/O pin
■ XTAL type: Crystal input terminal or external clock input pin
■ ERC type: RC oscillator input pin
P55/OSCO
15
I/O
■ General-purpose I/O pin
■ XTAL type: Output terminal for crystal oscillator or external clock input pin
■ RC type: Instruction clock output
■ External clock signal input
P54/TCC
3
I/O
■ General-purpose I/O pin
■ The real time clock/counter (with Schmitt trigger input pin), must be tied to
VDD or VSS if not in use.
/RESET
4
I
■ Input pin with Schmitt trigger. If this pin remains at logic low, the controller
will also remain in reset condition.
P50 ~ P53
17, 18,
1, 2
I/O
■ P50 ~ P53 are bi-directional I/O pins.
■ P50 and P51 can also be defined as the R-option pins
■ P50 ~ P53 can be pulled-down by software
P60 ~ P67
6 ~ 13
I/O
■ P60 ~ P67 are bi-directional I/O pins.
■ These can be pulled-high or can be open-drain by software programming
■ P60 ~ P63 can also be pulled-down by software
/INT
6
I
■ External interrupt pin triggered by falling edge
VSS
5
-
■ Ground
3-2
EM78P159NAS Pin Description
Symbol
Pin No.
Type
Function
VDD
15
-
■ Power supply.
P56/OSCI
17
I/O
■ General-purpose I/O pin
■ XTAL type: Crystal input terminal or external clock input pin
■ ERC type: RC oscillator input pin
P55/OSCO
16
I/O
■ General-purpose I/O pin
■ XTAL type: Output terminal for crystal oscillator or external clock input pin
■ RC type: Instruction clock output
■ External clock signal input
P54/TCC
4
I/O
■ General-purpose I/O pin
■ The real time clock/counter (with Schmitt trigger input pin), must be tied to
VDD or VSS if not in use.
/RESET
5
I
■ Input pin with Schmitt trigger. If this pin remains at logic low, the controller
will also remain in reset condition.
P50~P53
18, 19,
2, 3
I/O
■ P50 ~ P53 are bi-directional I/O pins
■ P50 and P51 can also be defined as the R-option pins
■ P50 ~ P53 can be pulled-down by software
P60~P67
7~14
I/O
■ P60 ~ P67 are bi-directional I/O pins.
■ These can be pulled-high or can be open-drain by software programming
■ P60 ~ P63 can also be pulled-down by software
/INT
7
I
■ External interrupt pin triggered by falling edge
VSS
6
-
■ Ground


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