Output Ports (R00-R03, R10-R13 And R20-R23); Configuration Of Output Ports; Mask Option - Epson S1C6P366 Technical Manual

CHAPTER 4: PERIPHERAL CIRCUITS AND OPERATION (Output Ports)
4.5 Output Ports

4.5.1 Configuration of output ports

The S1C6P366 has 12 bits of general output ports.
Output specifications of the output ports are fixed at complementary output.
Figure 4.5.1.1 shows the configuration of the output port.
The R02 and R03 output terminals are shared with special output terminals (TOUT, FOUT), and this
function is selected by the software.
At initial reset, these are all set to the general purpose output port.
Table 4.5.1.1 shows the setting of the output terminals by function selection.
When using the output port (R02, R03) as the special output port, the data register must be fixed at "1"
and the high impedance control register must be fixd at "0" (data output).

4.5.2 Mask option

In the S1C6P366, output specifications of all the output ports are fixed at complementary output.
34
(R00–R03, R10–R13 and R20–R23)
Address
High impedance
control register
Data register
Address
Fig. 4.5.1.1 Configuration of output port
Table 4.5.1.1 Function setting of output terminals
Terminal Terminal status
name at initial reset
R00 R00 (High output)
R01 R01 (High output)
R02 R02 (High output)
R03 R03 (High output)
R10–R13 R10–R13 (High output)
R20–R23 R20–R23 (High output)
Special output
TOUT FOUT
R00 R00
R01 R01
TOUT
FOUT
R10–R13 R10–R13
R20–R23 R20–R23
EPSON
V
DD
Rxx
V
SS
S1C6P366 TECHNICAL MANUAL