4 iniTial ReSeT
S1C63003/004/008/016 TeChniCal Manual
Seiko epson Corporation
4-3
(Rev. 1.1)
Terminal Settings at initial Resetting
4.5
The I/O port (P) terminals are shared with special output terminals and input/output terminals of the serial interface,
R/F converter, stopwatch timer and programmable timer (event counter). These functions are selected by software.
At initial reset, these terminals are configured to the general purpose I/O port terminals. Set them according to the
system in the initial routine.
Table 4.5.1 shows the list of the shared terminal settings.
5.1 List of shared terminal settings
Table 4.
Terminal
name
Terminal status
at initial reset
When special outputs/peripheral functions are used (selected by software)
Special output
Serial I/F
*
2
R/F
converter
Stopwatch
direct
input
*
2
Event
counter
TOUT
FOUT
BZ
Master
Slave
P00
P00 (IN & PD
*
1
)
RUN/STOP
P01
P01 (IN & PD
*
1
)
LAP
P02
P02 (IN & PD
*
1
)
P03
P03 (IN & PD
*
1
)
P10
P10 (IN & PD
*
1
)
EVIN_A
P11
P11 (IN & PD
*
1
)
TOUT_A
P12
P12 (IN & PD
*
1
)
BZ
P13
P13 (IN & PD
*
1
)
FOUT
P20–P21
P20–P21 (IN & PD
*
1
)
P22
P22 (IN & PD
*
1
)
EVIN_B
*
2
P23
P23 (IN & PD
*
1
)
TOUT_B
*
2
P30
*
2
P30 (IN & PD
*
1
)
SCLK(O)
SCLK(I)
P31
*
2
P31 (IN & PD
*
1
)
SOUT(O)
SOUT(O)
P32
*
2
P32 (IN & PD
*
1
)
SIN(I)
SIN(I)
P33
*
2
P33 (IN & PD
*
1
)
SRDY(O)/SS(I)
P40–P43
*
3
P40–P43 (IN & PD
*
1
)
P50
P50 (IN & PD
*
1
)
RFOUT
P51
P51 (IN & PD
*
1
)
SEN0
P52
P52 (IN & PD
*
1
)
REF0
P53
P53 (IN & PD
*
1
)
RFIN0
*
1: IN & PD (Input with pulled down): When "Pull-Down Used" is selected by mask option (high impedance when
"Pull-Down Not Used" is selected)
*
2: The P30 to P33 ports, serial interface, stopwatch direct input, TOUT_B output, and EVIN_B input functions are
not available in the S1C63003.
*
3: The P40 to P43 ports are not available in the S1C63003/004.
For setting procedure of the functions, see explanations for each of the peripheral circuits.
