S1C63358 TECHNICAL MANUAL
EPSON
13
CHAPTER 2: POWER SUPPLY AND INITIAL RESET
2.2.4 Terminal settings at initial resetting
The output port (R) terminals and I/O port (P) terminals are shared with special output terminals, input/
output terminals of the serial interface and input terminals of the A/D converter. These functions are
selected by the software. At initial reset, these terminals are set to the general purpose output port
terminals and I/O port terminals. Set them according to the system in the initial routine. In addition, take
care of the initial status of output terminals when designing a system.
Table 2.2.4.1 shows the list of the shared terminal settings.
Table 2.2.4.1 List of shared terminal settings
Special output
TOUT FOUT
TOUT
FOUT
Serial I/F
Master
Slave
SIN(I)
SIN(I)
SOUT(O) SOUT(O)
SCLK(O) SCLK(I)
SRDY(O)
Terminal
name
R00
R01
R02
R03
R10–R13
R20–R23
P00–P03
P10
P11
P12
P13
P20–P23
P30–P33
P40
P41
P42
P43
Terminal status
at initial reset
R00 (High output)
R01 (High output)
R02 (High output)
R03 (High output)
R10–R13 (High output)
R20–R23 (High output)
P00–P03 (Input & Pull-up)
P10 (Input & Pull-up
∗
)
P11 (Input & Pull-up
∗
)
P12 (Input & Pull-up
∗
)
P13 (Input & Pull-up
∗
)
P20–P23 (Input & Pull-up
∗
)
P30–P33 (Input & Pull-up
∗
)
P40 (Input & Pull-up
∗
)
P41 (Input & Pull-up
∗
)
P42 (Input & Pull-up
∗
)
P43 (Input & Pull-up
∗
)
A/D
converter
AD0(I)
AD1(I)
AD2(I)
AD3(I)
∗
When "with pull-up" is selected by mask option (high impedance when "gate direct" is selected)
For setting procedure of the functions, see explanations for each of the peripheral circuits.
2.3 Test Terminal (TEST)
This is the terminal used for the factory inspection of the IC. During normal operation, connect the TEST
terminal to V
DD
.
