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UPD178004A Datasheet(PDF) 15 Page - NEC

Part # UPD178004A
Description  8-BIT SINGLE-CHIP MICROCONTROLLERS
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Manufacturer  NEC [NEC]
Direct Link  http://www.nec.com/
Logo NEC - NEC

UPD178004A Datasheet(HTML) 15 Page - NEC

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µPD178004A, 178006A, 178016A, 178018A
5. PERIPHERAL HARDWARE FUNCTION FEATURES
5.1 PORTS
The following 3 types of I/O ports are available.
• CMOS input (P00)
:
1
• CMOS input/output (P01 to P06, port 1 to port 5, P64 to P67, port 12) : 54
• N-channel open-drain input/output (P60 to P63)
:
4
• N-ch open drain output (Port 13)
:
3
Total
: 62
Table 5-1. Port Functions
Input/output port pins. Input/output specifiable bit-wise.
Dedicated input port pins
Port 0
P00
P01 to P06
Input/output port pins. Input/output specifiable bit-wise.
Port 1
P10 to P15
Input/output port pins. Input/output specifiable bit-wise.
Port 3
P30 to P37
Input/output port pins. Input/output specifiable bit-wise.
Port 2
P20 to P27
Port 4
P40 to P47
Input/output port pins. Input/output specifiable in 8-bit units.
Test flag (KRIF) is set to 1 by falling edge detection.
Input/output port pins. Input/output specifiable bit-wise.
Port 5
P50 to P57
N-channel open-drain input/output port pins. Input/output specifiable bit-wise.
LED direct drive capability.
Port 6
P60 to P63
P64 to P67
Port 12
P120 to P125
Input/output port pins. Input/output specifiable bit-wise.
Input/output port pins. Input/output specifiable bit-wise.
N-ch open drain output port.
Port 13
P132 to P134
Pin Name
Function
Name


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