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µ PD78214 Sub-Series
(2) Pins other than those which function as ports
Pin
Input/output
Output
TO0-TO3
CI
Input
RxD
Input
TxD
Output
ASCK
Input
SB0
Input/output
SI
Input
Output
SO
SCK
Input/output
NMI
INTP0
INTP1
INTP2
Input
INTP3
INTP4
INTP5
AD0-AD7
Input/output
A8-A15
Output
Output
A16-A19
RD
Output
Output
WR
WAIT
Input
ASTB
Output
REFRQ
Output
Input
RESET
X1
Input
X2
EA
Input
AN0-AN5
AN6, AN7
Input
AV
REF
AV
SS
V
DD
V
SS
NC
Note These pins do not function as ports in the case of the µ PD78213.
26
Timer output
Count clock supplied to eight-bit timer/counter unit 2
Serial data input (UART)
Serial data output (UART)
Baud rate clock input (UART)
Serial data input/output (SB2)
Serial data input (three-wire serial I/O)
Serial data output (three-wire serial I/O)
Serial clock input/output (SBI, three-wire serial I/O)
External interrupt requests
Time-multiplexed address/data bus (external memory connected)
High-order address bus (external memory connected)
High-order address when the addresses are expanded (external memory connected)
Read strobe to external memory
Write strobe to external memory
Wait insertion
Latch timing for addresses A0 to A7 (when external memory is accessed)
Refresh pulse to external pseudo-static memory
Chip reset
Connected to the crystal oscillator used for the system clock (a clock
signal can be input to X1)
—
Designating ROM-less operation (access to the external memory
mapped to the same area as the internal ROM). Set this pin to low for
the µ PD78213, or to high for the µ PD78212 and µ PD78214.
Analog voltage input for A/D converter
A/D converter reference voltage
A/D converter ground
—
Main power
Ground
Function
—
Pin name for
secondary function
P34-P37
P23/INTP2
P30
P31
P25/INTP4
P33/SO
P27
P33/SB0
P32
P20
P21
P22
P23/CI
P24
P25/ASCK
P26
Note
P40-P47
Note
P50-P57
P60-P63
Note
P64
Note
P65
P66/AN6
—
P67/AN7
—
—
—
P70-P75
P66/WAIT,
P67/REFRQ
—
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