
I-100
EPSON
S1C88348/317/316/308 TECHNICAL HARDWARE
5 PERIPHERAL CIRCUITS AND THEIR OPERATION (Stopwatch Timer)
5.10.4 Control of stopwatch timer
Table 5.10.4.1 shows the stopwatch timer control bits.
Table 5.10.4.1 Stopwatch timer control bits
Address Bit
Name
00FF42 D7
D6
D5
D4
D3
D2
D1
D0
–
SWRST
SWRUN
SR R/W
Function
Comment
–
Stopwatch timer reset
Stopwatch timer Run/Stop control
Constantly "0" when
being read
10
–
0
W
R/W
–
Reset
Run
–
No operation
Stop
00FF43 D7
D6
D5
D4
D3
D2
D1
D0
SWD7
SWD6
SWD5
SWD4
SWD3
SWD2
SWD1
SWD0
Stopwatch timer data
BCD (1/10 sec)
Stopwatch timer data
BCD (1/100 sec)
0R
00FF20 D7
D6
D5
D4
D3
D2
D1
D0
PK01
PK00
PSIF1
PSIF0
PSW1
PSW0
PTM1
PTM0
K00–K07 interrupt priority register
Serial interface interrupt priority register
Stopwatch timer interrupt priority register
Clock timer interrupt priority register
0
R/W
PK01
PSIF1
PSW1
PTM1
1
0
PK00
PSIF0
PSW0
PTM0
1
0
1
0
Priority
level
Level 3
Level 2
Level 1
Level 0
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
00FF24 D7
D6
D5
D4
D3
D2
D1
D0
–
FSW100
FSW10
FSW1
FTM32
FTM8
FTM2
FTM1
–
Stopwatch timer 100 Hz interrupt factor flag
Stopwatch timer 10 Hz interrupt factor flag
Stopwatch timer 1 Hz interrupt factor flag
Clock timer 32 Hz interrupt factor flag
Clock timer 8 Hz interrupt factor flag
Clock timer 2 Hz interrupt factor flag
Clock timer 1 Hz interrupt factor flag
"0" when being read
–
0
R/W
–
(R)
Interrupt
factor is
generated
(W)
Reset
–
(R)
No interrupt
factor is
generated
(W)
No operation