S1C63455 TECHNICAL MANUAL
EPSON
15
CHAPTER 4: PERIPHERAL CIRCUITS AND OPERATION (Memory Map)
Address
Comment
D3
D2
Register
D1
D0
Name
Init 1
10
FF06H
FOUTE
0
FOFQ1 FOFQ0
R/W
R
R/W
FOUTE
0 3
FOFQ1
FOFQ0
0
– 2
0
Enable
Disable FOUT output enable
Unused
FOUT
frequency
selection
FF07H
0
WDEN WDRST
R/W
W
R
0 3
WDEN
WDRST3
– 2
1
Reset
Enable
Reset
Disable
Invalid
Unused
Watchdog timer enable
Watchdog timer reset (writing)
FF00H
CLKCHG OSCC
0
VDC
RR/W
R/W
CLKCHG
OSCC
0 3
VDC
0
– 2
0
OSC3
On
2.2 V
OSC1
Off
1.3 V
CPU clock switch
OSC3 oscillation On/Off
Unused
CPU operating voltage switch (1.3 V: OSC1, 2.2 V: OSC3)
FF20H
SIK03
SIK02
SIK01
SIK00
R/W
SIK03
SIK02
SIK01
SIK00
0
Enable
Disable
K00–K03 interrupt selection register
FF21H
K03
K02
K01
K00
R
K03
K02
K01
K00
– 2
High
Low
K00–K03 input port data
FF22H
KCP03
KCP02
KCP01
KCP00
R/W
KCP03
KCP02
KCP01
KCP00
1
K00–K03 input comparison register
0
fOSC1/64
1
fOSC1/8
2
fOSC1
3
fOSC3
[FOFQ1, 0]
Frequency
FF30H
R03HIZ R02HIZ R01HIZ R00HIZ
R/W
R03HIZ
R02HIZ
R01HIZ
R00HIZ
0
High-Z
Output
R03 output high impedance control (FOUTE=0)
FOUT output high impedance control (FOUTE=1)
R02 output high impedance control (PTOUT=0)
TOUT output high impedance control (PTOUT=1)
R01 output high impedance control
R00 output high impedance control
FF31H
R03
R02
R01
R00
R/W
R03
R02
R01
R00
1
High
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
FF40H
IOC03
IOC02
IOC01
IOC00
R/W
IOC03
IOC02
IOC01
IOC00
0
Output
Input
P00–P03 I/O control register
FF44H
IOC13
IOC12
IOC11
IOC10
R/W
IOC13
IOC12
IOC11
IOC10
0
Output
Input
P13 I/O control register
functions as a general-purpose register when SIF (slave) is selected
P12 I/O control register (ESIF=0)
functions as a general-purpose register when SIF is selected
P11 I/O control register (ESIF=0)
functions as a general-purpose register when SIF is selected
P10 I/O control register (ESIF=0)
functions as a general-purpose register when SIF is selected
FF41H
PUL03
PUL02
PUL01
PUL00
R/W
PUL03
PUL02
PUL01
PUL00
1
On
Off
P00–P03 pull-up control register
FF42H
P03
P02
P01
P00
R/W
P03
P02
P01
P00
– 2
High
Low
P00–P03 I/O port data
Table 4.1.1 (a) I/O memory map (FF00H–FF44H)
Remarks
1 Initial value at initial reset
2 Not set in the circuit
3 Constantly "0" when being read