Specifications

I-20 EPSON S1C62N82 TECHNICAL HARDWARE
CHAPTER 4: PERIPHERAL CIRCUITS AND OPERATION (Memory Map)
Address Comment
Register
D3 D2 D1 D0 Name SR
*1
10
0F4H
0F6H
0F9H
0FAH
R12
MO
ENV
R11
R10
FOUT
P03 P02 P01 P00
0 TMRST SWRUN SWRST
HLMOD 0 SVDDT SVDON
W
R/W
MELD
R12
MO
ENV
R11
R10
FOUT
P03
P02
P01
P00
–
–
–
–
I/O port (P00–P03)
0
TMRST
SWRUN
SWRST
Reset
0
Reset
HLMOD
0
SVDDT
SVDON
0
0
0 ON OFF
Clock timer reset
Stopwatch timer RUN/STOP
Stopwatch timer reset
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
High
High
High
High
Low
Low
Low
Low
Heavy load protection mode register
Supply voltage detector data
Supply voltage detector ON/OFF
Reset
Run
Reset
–
Stop
–
R
*2
*2
*2
*2
R/W
R/W WR
R/W R/W
Heavy
load
Supply
voltage
low
Normal
load
Supply
voltage
normal
*5
*5
*5
*5
0
0
–
Hz
0
0
MELD
*6
Table 4.1.1 (f) I/O memory map (0F4H, 0F6H, 0F9H–0FAH)
* 1 Initial value following initial reset
* 2 Not set in the circuit
* 3 Undefined
* 4 Reset (0) immediately after being read
* 5 Constantly 0 when being read
* 6 Refer to main manual