Specifications

S1C6S2N7 TECHNICAL SOFTWARE EPSON II-17
CHAPTER 3: PERIPHERAL CIRCUITS (Output Ports)
Output Ports3.2
Output port
memory map
Table 3.2.1 I/O memory map
*1 Initial value following initial reset
*2 Not set in the circuit
*3 Undefined
*4 Reset (0) immediately after being read
*5 Always 0 when being read
*6 Refer to main manual
The S1C6S2N7 Series have 4 bits for general output ports
(R00–R03). R00 and R01 although can be use for special use
output port as shown in later of this section. The output
port is a read/write register, output pins provide the con-
tents of the register. The states of the output ports (R00–
R03) are decided by the data of address 0F3H. Output ports
can also be read, and output control is possible using the
operation instructions (AND, OR, etc.). The output ports are
all initialized to low level (0) after an initial reset.
Control of
the output port
Address Comment
Register
D3 D2 D1 D0 Name SR
*1
10
0F3H
R03 R02
R01 R00
R03
R02
R01
BUZZER
R00
FOUT
0
0
0
0
0
0
High
High
High
ON
High
ON
Low
Low
Low
OFF
Low
OFF
R03 output port data
R02 output port data
R01 output port data
Buzzer ON/OFF control register
R00 output port data
Frequency output ON/OFF control register
R/W
BUZZER FOUT