
16
EPSON
S1C8F626 TECHNICAL MANUAL
5 PERIPHERAL CIRCUITS AND THEIR OPERATION (I/O Memory Map)
Table 5.1.1(d) I/O Memory map (00FF20H–00FF25H)
SR R/W
Address Bit
Name
Function
Comment
10
00FF20 D7
D6
D5
D4
D3
D2
D1
D0
PK01
PK00
PSIF01
PSIF00
PSW1
PSW0
PTM1
PTM0
K00–K07 interrupt priority register
Serial interface 0 interrupt priority register
Stopwatch timer interrupt priority register
Clock timer interrupt priority register
0
R/W
PK01
PSIF01
PSW1
PTM1
1
0
PK00
PSIF00
PSW0
PTM0
1
0
1
0
Priority
level
Level 3
Level 2
Level 1
Level 0
00FF21 D7
D6
D5
D4
D3
D2
D1
D0
–
PPT3
PPT2
PPT1
PPT0
PSIF11
PSIF10
Constantly "0" when
being read
–
0
–
PPT3
PPT1
PSIF11
1
0
PPT2
PPT0
PSIF10
1
0
1
0
–
Programmable timer 3–2 interrupt
priority register
Programmable timer 1–0 interrupt
priority register
Serial interface 1 interrupt priority register
Priority
level
Level 3
Level 2
Level 1
Level 0
0
R/W
00FF22 D7
D6
D5
D4
D3
D2
D1
D0
–
ESW100
ESW10
ESW1
ETM32
ETM8
ETM2
ETM1
–
Stopwatch timer 100 Hz interrupt enable register
Stopwatch timer 10 Hz interrupt enable register
Stopwatch timer 1 Hz interrupt enable register
Clock timer 32 Hz interrupt enable register
Clock timer 8 Hz interrupt enable register
Clock timer 2 Hz interrupt enable register
Clock timer 1 Hz interrupt enable register
"0" when being read
–
0
R/W
–
Interrupt
enable
–
Interrupt
disable
D7
D6
D5
D4
D3
D2
D1
D0
00FF23
–
ESERR1
ESREC1
ESTRA1
ESERR0
ESREC0
ESTRA0
–
Serial I/F 1 (error) interrupt enable register
Serial I/F 1 (receiving) interrupt enable register
Serial I/F 1 (transmitting) interrupt enable register
Serial I/F 0 (error) interrupt enable register
Serial I/F 0 (receiving) interrupt enable register
Serial I/F 0 (transmitting) interrupt enable register
–
0
–
Interrupt
enable
–
Interrupt
disable
Constantly "0" when
being read
R/W
00FF25 D7
D6
D5
D4
D3
D2
D1
D0
ETC3
ETU3
ETC2
ETU2
ETC1
ETU1
ETC0
ETU0
PTM3 compare match interrupt enable
PTM3 underflow interrupt enable
PTM2 compare match interrupt enable
PTM2 underflow interrupt enable
PTM1 compare match interrupt enable
PTM1 underflow interrupt enable
PTM0 compare match interrupt enable
PTM0 underflow interrupt enable
0
R/W
Interrupt
enable
Interrupt
disable
D7
D6
D5
D4
D3
D2
D1
D0
00FF24
EK07
EK06
EK05
EK04
EK03
EK02
EK01
EK00
K07 interrupt enable
K06 interrupt enable
K05 interrupt enable
K04 interrupt enable
K03 interrupt enable
K02 interrupt enable
K01 interrupt enable
K00 interrupt enable
0
Interrupt
enable
Interrupt
disable
R/W