
S1C88409 TECHNICAL MANUAL
EPSON
27
CHAPTER 5: PERIPHERAL CIRCUITS AND OPERATION (I/O Memory Map)
Table 5.1.1(d) I/O Memory map (00FF20H–00FF25H)
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
00FF21
8-bit programmable timer
interrupt priority register
Serial interface
interrupt priority register
Clock timer
interrupt priority register
LCD controller
interrupt priority register
R/W
0
PTM21
PTM20
PSI1
PSI0
PCTM1
PCTM0
PLCD1
PLCD0
D7
D6
D5
D4
D3
D2
D1
D0
PTM21
PSI1
PCTM1
PLCD1
1
0
PTM20
PSI0
PCTM0
PLCD0
1
0
1
0
Priority
level
Level 3
Level 2
Level 1
Level 0
00FF22
A/D converter
interrupt priority register
Touch panel controller
interrupt priority register
–
R/W
–
0
–
"0" when being read
PAD1
PAD0
PTP1
PTP0
–
D7
D6
D5
D4
D3
D2
D1
D0
PAD1
PTP1
1
0
PAD0
PTP0
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
00FF25
Clock timer 60 S interrupt enable register
Clock timer 1 Hz interrupt enable register
Clock timer 2 Hz interrupt enable register
Clock timer 8 Hz interrupt enable register
Clock timer 32 Hz interrupt enable register
LCD controller interrupt enable register
–
R/W
–
0
–
Interrupt is
disabled
Interrupt is
enabled
"0" when being read
ET60S
ECTM1
ECTM2
ECTM8
ECTM32
ELCD
–
D7
D6
D5
D4
D3
D2
D1
D0
00FF24
8-bit programmable timer
underflow interrupt enable register
16-bit programmable timer 1
compare match interrupt enable register
16-bit programmable timer 1
underflow interrupt enable register
16-bit programmable timer 0
compare match interrupt enable register
16-bit programmable timer 0
underflow interrupt enable register
Serial interface
transmit completion interrupt enable register
Serial interface
receive completion interrupt enable register
Serial interface
receive error interrupt enable register
R/W
0
Interrupt is
disabled
Interrupt is
enabled
ETU2
ETC1
ETU1
ETC0
ETU0
ESTX
ESRX
ESERR
D7
D6
D5
D4
D3
D2
D1
D0