
18
EPSON
S1C63666 TECHNICAL MANUAL
CHAPTER 4: PERIPHERAL CIRCUITS AND OPERATION (Memory Map)
Table 4.1.1 (a) I/O memory map (FF00H–FF31H)
Remarks
∗
1 Initial value at initial reset
∗
2 Not set in the circuit
∗
3 Constantly "0" when being read
Address
Comment
D3
D2
Register
D1
D0
Name
Init
∗
1
1
0
FF06H
FOUTE SWDIR FOFQ1 FOFQ0
R/W
FOUTE
SWDIR
FOFQ1
FOFQ0
0
0
0
0
Enable
Disable
FF05H
CMPON CMPDT SVDDT SVDON
R/W
R/W
R
CMPON
CMPDT
SVDDT
SVDON
0
0
0
0
On
+ > -
Low
On
Off
+ < -
Normal
Off
Analog comparator On/Off
Analog comparator data
SVD evaluation data
SVD circuit On/Off
FF07H
0
0
WDEN WDRST
R/W
W
R
0
∗
3
0
∗
3
WDEN
WDRST
∗
3
–
∗
2
–
∗
2
1
Reset
Enable
Reset
Disable
Invalid
Unused
Unused
Watchdog timer enable
Watchdog timer reset (writing)
FF04H
0
SVDS2 SVDS1 SVDS0
R
R/W
0
∗
3
SVDS2
SVDS1
SVDS0
–
∗
2
0
0
0
FF01H
CLKCHG OSCC
0
0
R/W
R
CLKCHG
OSCC
0
∗
3
0
∗
3
0
0
–
∗
2
–
∗
2
OSC3
On
OSC1
Off
CPU clock switch
OSC3 oscillation On/Off
Unused
Unused
FF00H
VDC3
VDC2
VDC1
VDC0
R/W
VDC3
VDC2
VDC1
VDC0
0
0
0
0
1/2V
DD
1/2V
DD
On
V
D3
V
DD
V
DD
Off
V
D1L
LCD system voltage regulator power source switch
Low-speed operation voltage regulator power source switch
High-speed operation voltage regulator on/off
Logic system power source switch
Unused
SVD criteria voltage setting
0
1.85/0.98
1
2.00
2
2.15
3
2.30
4
2.45
5
2.60
6
2.75
7
2.90
[SVDS2–0]
Voltage(V)
FOUT output enable
Stopwatch direct input switch
0: K00=Run/Stop, K01=Lap 1: K00=Lap, K01=Run/Stop
FOUT
frequency
selection
0
f
OSC1
/64
1
f
OSC1
/8
2
f
OSC1
3
f
OSC3
[FOFQ1, 0]
Frequency
FF20H
SIK03
SIK02
SIK01
SIK00
R/W
SIK03
SIK02
SIK01
SIK00
0
0
0
0
Enable
Enable
Enable
Enable
Disable
Disable
Disable
Disable
K00–K03 interrupt selection register
FF21H
K03
K02
K01
K00
R
K03
K02
K01
K00
–
∗
2
–
∗
2
–
∗
2
–
∗
2
High
High
High
High
Low
Low
Low
Low
K00–K03 input port data
FF22H
KCP03
KCP02
KCP01
KCP00
R/W
KCP03
KCP02
KCP01
KCP00
1
1
1
1
K00–K03 input comparison register
FF24H
SIK13
SIK12
SIK11
SIK10
R/W
SIK13
SIK12
SIK11
SIK10
0
0
0
0
Enable
Enable
Enable
Enable
Disable
Disable
Disable
Disable
K10–K13 interrupt selection register
FF25H
K12
K11
K10
R
K13
K12
K11
K10
–
∗
2
–
∗
2
–
∗
2
–
∗
2
High
High
High
High
Low
Low
Low
Low
K10–K13 input port data
FF26H
KCP13
KCP12
KCP11
KCP10
R/W
KCP13
KCP12
KCP11
KCP10
1
1
1
1
K10–K13 input comparison register
FF30H
R03HIZ R02HIZ R01HIZ R00HIZ
R/W
R03HIZ
R02HIZ
R01HIZ
R00HIZ
0
0
0
0
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Output
Output
Output
Output
R03 (FOUTE=0)/FOUT (FOUTE=1) Hi-Z control
R02 (PTOUT=0)/TOUT (PTOUT=1) Hi-Z control
R01 Hi-Z control
R00 Hi-Z control
FF31H
R03
R02
R01
R00
R/W
R03
R02
R01
R00
0
0
0
0
High
High
High
High
Low
Low
Low
Low
R03 output port data (FOUTE=0) Fix at "1" when FOUT is used.
R02 output port data (PTOUT=0) Fix at "1" when TOUT is used.
R01 output port data
R00 output port data
K13