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UPD784938 Datasheet(PDF) 53 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) 53 Page - NEC

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CHAPTER 2 PIN FUNCTIONS
53
Preliminary User’s Manual U13987EJ1V0UM00
(2) Non-port pins (1/2)
Pin Name
Input/Output
Alternate Function
Function
TO0/TO3
Output
P34 to P37
Timer output
CI
Input
P23/INTP2
Count clock input to timer/event counter 2
RxD
Input
P30/SI1
Serial data input (UART0)
RxD2
P13/SI2
Serial data input (UART2)
TxD
Output
P31/SO1
Serial data output (UART0)
TxD2
P14/SO2
Serial data output (UART2)
ASCK
Input
P25/INTP4/SCK1
Baud rate clock input (UART0)
ASCK2
P12/SCK2
Baud rate clock input (UART2)
SI0
Input
P27
Serial data input (3-wire serial I/O0)
SI1
P30/RxD
Serial data input (3-wire serial I/O1)
SI2
P13/RxD2
Serial data input (3-wire serial I/O2)
SI3
P106
Serial data input (3-wire serial I/O3)
SO0
Output
P33
Serial data output (3-wire serial I/O0)
SO1
P31/TxD
Serial data output (3-wire serial I/O1)
SO2
P14/TxD2
Serial data output (3-wire serial I/O2)
SO3
P107
Serial data output (3-wire serial I/O3)
SCK0
Input/output
P32
Serial clock input/output (3-wire serial I/O0)
SCK1
P25/INTP4/ASCK
Serial clock input/output (3-wire serial I/O1)
SCK2
P12/ASCK2
Serial clock input/output (3-wire serial I/O2)
SCK3
P105
Serial clock input/output (3-wire serial I/O3)
NMI
Input
P20
External interrupt requests
INTP0
P21
• Count clock input to timer/event counter 1
• CR11 or CR12 capture trigger signal
INTP1
P22
• Count clock input to timer/event counter 2
• CR22 capture trigger signal
INTP2
P23/CI
• Count clock input to timer/event counter 2
• CR21 capture trigger signal
INTP3
P24
• Count clock input to timer/event counter 0
• CR02 capture trigger signal
INTP4
P25/ASCK0/SCK1
INTP5
P26
A/D converter conversion start trigger input
AD0 to AD7
Input/output
P40 to P47
Time division address/data bus (external memory connection)
A8 to A15
Output
P50 to P57
Upper address bus (external memory connection)
A16 to A19
Output
P60 to P63
Upper address with address extension (external memory connection)
RD
Output
P64
External memory read strobe
WR
Output
P65
External memory write strobe
WAIT
Input
P66/HLDRQ
Wait insertion
REFRQ
Output
P67/HLDAK
External pseudo-static memory refresh pulse output
HLDRQ
Input
P66/WAIT
Bus hold request input
HLDAK
Output
P67/REFRQ
Bus hold response output


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