
72
EPSON
S1C88409 TECHNICAL MANUAL
CHAPTER 5: PERIPHERAL CIRCUITS AND OPERATION (Input Ports)
5.6.4 I/O memory of input ports
Table 5.6.4.1 shows the input port control bits.
Table 5.6.4.1 Input port control bits
Address
Function
R/W
Init
0
1
Comment
Name
Bit
00FF20
K10–K13
interrupt priority register
K00–K07
interrupt priority register
16-bit programmable timer 1
interrupt priority register
16-bit programmable timer 0
interrupt priority register
R/W
0
PK11
PK10
PK01
PK00
PTM11
PTM10
PTM01
PTM00
D7
D6
D5
D4
D3
D2
D1
D0
PK11
PK01
PTM11
PTM01
1
0
PK10
PK00
PTM10
PTM00
1
0
1
0
Priority
level
Level 3
Level 2
Level 1
Level 0
00FF23
K13 interrupt enable register
K12 interrupt enable register
K11 interrupt enable register
K10 interrupt enable register
K00–K07 interrupt enable register
–
R/W
–
0
–
Interrupt is
disabled
Interrupt is
enabled
"0" when being read
EK13
EK12
EK11
EK10
EK0
–
D7
D6
D5
D4
D3
D2
D1
D0
00FF27
K13 interrupt factor flag
K12 interrupt factor flag
K11 interrupt factor flag
K10 interrupt factor flag
K00–K07 interrupt factor flag
–
R/(W)
–
0
–
(R)
Interrupt
factor has not
generated
(W)
Invalid
(R)
Interrupt
factor has
generated
(W)
Reset
"0" when being read
FK13
FK12
FK11
FK10
FK0
–
D7
D6
D5
D4
D3
D2
D1
D0
00FFC0
K07 interrupt selection register
K06 interrupt selection register
K05 interrupt selection register
K04 interrupt selection register
K03 interrupt selection register
K02 interrupt selection register
K01 interrupt selection register
K00 interrupt selection register
R/W
0
Interrupt
is disabled
Interrupt
is enabled
SIK07
SIK06
SIK05
SIK04
SIK03
SIK02
SIK01
SIK00
D7
D6
D5
D4
D3
D2
D1
D0
00FFC1
K07 input comparison register
K06 input comparison register
K05 input comparison register
K04 input comparison register
K03 input comparison register
K02 input comparison register
K01 input comparison register
K00 input comparison register
R/W
1
Rising edge
generates
interrupt
Falling edge
generates
interrupt
KCP07
KCP06
KCP05
KCP04
KCP03
KCP02
KCP01
KCP00
D7
D6
D5
D4
D3
D2
D1
D0
00FFC2
–
K13 input comparison register
K12 input comparison register
K11 input comparison register
K10 input comparison register
–
R/W
–
1
–
Rising edge
generates
interrupt
–
Falling edge
generates
interrupt
"0" when being read
00FFC3
K07 input port data
K06 input port data
K05 input port data
K04 input port data
K03 input port data
K02 input port data
K01 input port data
K00 input port data
R
–
Low
High
K07D
K06D
K05D
K04D
K03D
K02D
K01D
K00D
D7
D6
D5
D4
D3
D2
D1
D0
00FFC4
–
K13 input port data
K12 input port data
K11 input port data
K10 input port data
–
R
–
Low
–
High
"0" when being read
–
K13D
K12D
K11D
K10D
D7
D6
D5
D4
D3
D2
D1
D0
–
KCP13
KCP12
KCP11
KCP10
D7
D6
D5
D4
D3
D2
D1
D0