Specifications

II-22 EPSON S1C62N82 TECHNICAL SOFTWARE
CHAPTER 3: PERIPHERAL CIRCUITS (Output Ports)
Output Ports3.3
Output port
memory map
Table 3.3.1 I/O memory map
Control of
the output port
The S1C62N82 Series have 7 bits for general output ports
(R00–R03 and R10–R12). The output port is a read/write
register, output pins provide the contents of the register.
The states of the output ports (R00–R03) are decided by the
data of address 0F3H and R10 to R12 are decided by the
data of address 0F4H. 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.
*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
Address Comment
Register
D3 D2 D1 D0 Name SR 1 0
0F3H
R03 R02 R01 R00
R03
R02
R01
R00
0
0
0
0
High
High
High
High
Low
Low
Low
Low
Output port data (R00–R03)
R/W
0F4H
R12
MO
ENV
R11
R10
FOUT
R/W
MELD
R12
MO
ENV
R11
R10
FOUT
Melody output mask
Output port data (R12)
Inverting melody output
Melody envelope control
Output port data (R11)
Output port data (R10)
Frequency output
Disable
High
–
–
High
High
ON
Enable
Low
–
–
Low
Low
OFF
0
0
–
Hz
0
0
MELD
*6