S1C63455 TECHNICAL MANUAL
EPSON
85
CHAPTER 4: PERIPHERAL CIRCUITS AND OPERATION (Interrupt and HALT)
4.13.4 I/O memory of interrupt
Table 4.13.4.1 shows the I/O addresses and the control bits for controlling interrupts.
Table 4.13.4.1 Control bits of interrupt
Address
Comment
D3
D2
Register
D1
D0
Name
Init 1
10
FF20H
SIK03
SIK02
SIK01
SIK00
R/W
SIK03
SIK02
SIK01
SIK00
0
Enable
Disable
K00–K03 interrupt selection register
FF22H
KCP03
KCP02
KCP01
KCP00
R/W
KCP03
KCP02
KCP01
KCP00
1
K00–K03 input comparison register
FFE6H
EIT3
EIT2
EIT1
EIT0
R/W
EIT3
EIT2
EIT1
EIT0
0
Enable
Mask
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)
FFE2H
0
EIPT1
EIPT0
RR/W
0 3
EIPT1
EIPT0
– 2
0
Enable
Mask
Unused
Interrupt mask register (Programmable timer 1)
Interrupt mask register (Programmable timer 0)
FFE7H
0
EISW1 EISW10
RR/W
0 3
EISW1
EISW10
– 2
0
Enable
Mask
Unused
Interrupt mask register (Stopwatch timer 1 Hz)
Interrupt mask register (Stopwatch timer 10 Hz)
FFE3H
0
EISIF
RR/W
0 3
EISIF
– 2
0
Enable
Mask
Unused
Interrupt mask register (Serial I/F)
FFE4H
0
EIK0
RR/W
0 3
EIK0
– 2
0
Enable
Mask
Unused
Interrupt mask register (K00–K03)
FFF6H
IT3
IT2
IT1
IT0
R/W
IT3
IT2
IT1
IT0
0
(R)
Yes
(W)
Reset
(R)
No
(W)
Invalid
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)
FFF2H
0
IPT1
IPT0
RR/W
0 3
IPT1
IPT0
– 2
0
(R)
Yes
(W)
Reset
(R)
No
(W)
Invalid
Unused
Interrupt factor flag (Programmable timer 1)
Interrupt factor flag (Programmable timer 0)
FFF7H
0
ISW1
ISW10
RR/W
0 3
ISW1
ISW10
– 2
0
(R)
Yes
(W)
Reset
(R)
No
(W)
Invalid
Unused
Interrupt factor flag (Stopwatch timer 1 Hz)
Interrupt factor flag (Stopwatch timer 10 Hz)
FFF3H
0
ISIF
RR/W
0 3
ISIF
– 2
0
(R)
Yes
(W)
Reset
(R)
No
(W)
Invalid
Unused
Interrupt factor flag (Serial I/F)
FFF4H
000
IK0
RR/W
0 3
IK0
– 2
0
(R)
Yes
(W)
Reset
(R)
No
(W)
Invalid
Unused
Interrupt factor flag (K00–K03)
*1 Initial value at initial reset
*2 Not set in the circuit
*3 Constantly "0" when being read