Terminal Settings At Initial Resetting; Test Terminal (Test) - Epson S1C63656 Technical Manual

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 and
input/output terminals of the serial interface. 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.
Terminal
name
R00 R00 (LOW output)
R01 R01 (LOW output)
R02 R02 (LOW output)
R03 R03 (LOW output)
P00–P03 P00–P03 (Input & pulled down∗)
P10 P10 (Input & pulled down∗)
P11 P11 (Input & pulled down∗)
P12 P12 (Input & pulled down∗)
P13 P13 (Input & pulled down∗)
∗ When "With Pull-Down" 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 .
SS
14
Table 2.2.4.1 List of shared terminal settings
Terminal status
at initial reset
EPSON
Special output
TOUT FOUT Master
TOUT
FOUT
SIN(I)
SOUT(O)
SCLK(O)
Serial I/F
Slave
SIN(I)
SOUT(O)
SCLK(I)
SRDY(O)
S1C63656 TECHNICAL MANUAL