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UPD784938 Datasheet(PDF) 52 Page - NEC

Part # UPD784938
Description  16-Bit Single-Chip Microcontrollers
Download  733 Pages
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Manufacturer  NEC [NEC]
Direct Link  http://www.nec.com/
Logo NEC - NEC

UPD784938 Datasheet(HTML) 52 Page - NEC

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CHAPTER 2 PIN FUNCTIONS
52
Preliminary User’s Manual U13987EJ1V0UM00
(1) Port pins (2/2)
Pin Name
Input/Output
Alternate Function
Function
P40 to P47
Input/output
AD0 to AD7
Port 4 (P4):
• 8-bit input/output port
• Input/output can be specified in 1-bit units
• For input mode pins, on-chip pull-up resistor connection can be
specified at once by means of software
• LED drive capability
P50 to P57
Input/output
A8 to A15
Port 5 (P5):
• 8-bit input/output port
• Input/output can be specified in 1-bit units
• For input mode pins, on-chip pull-up resistor connection can be
specified at once by means of software
• LED drive capability
P60 to P63
Input/output
A16 to A19
P64
RD
P65
WR
P66
WAIT/HLDRQ
P67
REFRQ/HLDAK
P70 to P77
Input/output
ANI0 to ANI7
Port 7 (P7):
• 8-bit input/output port
• Input/output can be specified in 1-bit units
P90 to P97
Input/output
Port 9 (P9):
• 8-bit input/output port
• Input/output can be specified in 1-bit units
• For input mode pins, on-chip pull-up resistor connection can be
specified at once by means of software
P100 to P104
Input/output
P105
SCK3
P106
SI3
P107
SO3
Port 6 (P6):
• 8-bit input/output port
• Input/output can be specified in 1-bit units
• For input mode pins, on-chip pull-up resistor connection can be
specified at once by means of software
Port 10 (P10):
• 8-bit input/output port
• Input/output can be specified in 1-bit units
• For input mode pins, on-chip pull-up resistor connection can be
specified at once by means of software
• P105 and P107 can be set in N-ch open-drain mode


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