
II-6
EPSON
S1C62740 TECHNICAL SOFTWARE
CHAPTER 4: DATA MEMORY
Detail Map of the I/O Memory
Tables 4.2.1(a)–(d) show the detail map of the I/O memory.
4.2
Table 4.2.1(a) I/O memory map (C0H–CCH)
Address
Comment
Register
D3
D2
D1
D0
Name
Init
1
0
*1
C0H
IPT
R
0
IPT
–
0
Unused
Interrupt factor flag (programmable timer)
Yes
No
0
*2
*5
*4
C1H
ISIO
R
0
ISIO
–
0
Yes
No
0
*2
*5
*4
C2H
IK1
R
0
IK1
Yes
No
0
–
0
*2
*5
*4
IK0
R
0
IK0
–
0
Yes
No
0
C3H
*2
*5
*4
C4H
IAD
R
0
IAD
–
0
Yes
No
0
*2
*5
*4
C5H
ISW0
R
0
ISW1
ISW0
–
0
Yes
No
ISW1
0
*2
*5
*4
C6H
IT32
R
IT1
IT2
IT8
IT32
0
Interrupt factor flag (clock timer 1 Hz)
Interrupt factor flag (clock timer 2 Hz)
Interrupt factor flag (clock timer 8 Hz)
Interrupt factor flag (clock timer 32 Hz)
Yes
No
IT8
IT2
IT1
*4
C8H
EIPT
0
EIAD
EISIO
EIPT
–
0
Unused
Interrupt mask register (A/D converter)
Interrupt mask register (serial interface)
Interrupt mask register (programmable timer)
Enable
Mask
EISIO
EIAD
0
*2
*5
C9H
EIK0
0
EIK1
EIK0
–
0
Unused
Interrupt mask register (K10)
Interrupt mask register (K00–K03)
Enable
Mask
EIK1
0
*2
*5
CAH
SIK00
SIK03
SIK02
SIK01
SIK00
0
Enable
Disable
SIK01
SIK02
SIK03
R/W
*7
CBH
EISW0
R/W
0
EISW1
EISW0
–
0
Enable
Mask
EISW1
0
*2
*5
CCH
EIT32
EIT1
EIT2
EIT8
EIT32
0
Enable
Mask
EIT8
EIT2
EIT1
R/W
Interrupt selection register (K03)
Interrupt selection register (K02)
Interrupt selection register (K01)
Interrupt selection register (K00)
Unused
Interrupt mask register (stopwatch 1 Hz)
Interrupt mask register (stopwatch 10 Hz)
R/W
Interrupt mask register (clock timer 1 Hz)
Interrupt mask register (clock timer 2 Hz)
Interrupt mask register (clock timer 8 Hz)
Interrupt mask register (clock timer 32 Hz)
Unused
Interrupt factor flag (serial interface)
Unused
Interrupt factor flag (K10)
Unused
Interrupt factor flag (K00–K03)
Unused
Interrupt factor flag (A/D converter)
Unused
Interrupt factor flag (stopwatch 1 Hz)
Interrupt factor flag (stopwatch 10 Hz)
R
0
R
Remarks
*1 Initial value at the time of initial reset
*5 Constantly "0" when being read
*2 Not set in the circuit
*6 Refer to main manual
*3 Undefined
*7 Page switching in I/O memory is not necessary
*4 Reset (0) immediately after being read