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96 EPSON S1C88650 TECHNICAL MANUAL
5 PERIPHERAL CIRCUITS AND THEIR OPERATION (Programmable Timer)
Table 5.10.9.1(b) Programmable timer control bits
SR R/WAddress Bit Name Function Comment10
00FF19 D7
D6
D5
D4
D3
D2
D1
D0
PRPRT7
PST72
PST71
PST70
PRPRT6
PST62
PST61
PST60
Programmable timer 7 clock control
Programmable timer 7 division ratio
Programmable timer 6 clock control
Programmable timer 6 division ratio
0
0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
On
On
Off
Off
PST72
1
1
1
1
0
0
0
0
PST71
1
1
0
0
1
1
0
0
PST70
1
0
1
0
1
0
1
0
(OSC3)
f
OSC3
/ 4096
f
OSC3
/ 1024
f
OSC3
/ 256
f
OSC3
/ 64
f
OSC3
/ 32
f
OSC3
/ 8
f
OSC3
/ 2
f
OSC3
/ 1
(OSC1)
f
OSC1
/ 128
f
OSC1
/ 64
f
OSC1
/ 32
f
OSC1
/ 16
f
OSC1
/ 8
f
OSC1
/ 4
f
OSC1
/ 2
f
OSC1
/ 1
PST62
1
1
1
1
0
0
0
0
PST61
1
1
0
0
1
1
0
0
PST60
1
0
1
0
1
0
1
0
(OSC3)
f
OSC3
/ 4096
f
OSC3
/ 1024
f
OSC3
/ 256
f
OSC3
/ 64
f
OSC3
/ 32
f
OSC3
/ 8
f
OSC3
/ 2
f
OSC3
/ 1
(OSC1)
f
OSC1
/ 128
f
OSC1
/ 64
f
OSC1
/ 32
f
OSC1
/ 16
f
OSC1
/ 8
f
OSC1
/ 4
f
OSC1
/ 2
f
OSC1
/ 1
00FF17 D7
D6
D5
D4
D3
D2
D1
D0
–
–
–
–
PRTF3
PRTF2
PRTF1
PRTF0
–
–
–
R/W register
Programmable timer 3 source clock selection
Programmable timer 2 source clock selection
Programmable timer 1 source clock selection
Programmable timer 0 source clock selection
Constantly "0" when
being read
Reserved register
–
–
–
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
–
–
–
1
f
OSC1
f
OSC1
f
OSC1
f
OSC1
–
–
–
0
f
OSC3
f
OSC3
f
OSC3
f
OSC3
00FF1B D7
D6
D5
D4
D3
D2
D1
D0
–
–
–
–
PRTF7
PRTF6
PRTF5
PRTF4
–
–
–
–
Programmable timer 7 source clock selection
Programmable timer 6 source clock selection
Programmable timer 5 source clock selection
Programmable timer 4 source clock selection
Constantly "0" when
being read
–
–
–
–
0
0
0
0
R/W
R/W
R/W
R/W
–
–
–
–
f
OSC1
f
OSC1
f
OSC1
f
OSC1
–
–
–
–
f
OSC3
f
OSC3
f
OSC3
f
OSC3
00FF21 D7
D6
D5
D4
D3
D2
D1
D0
–
–
PPT3
PPT2
PPT1
PPT0
–
–
Constantly "0" when
being read
Constantly "0" when
being read
–
–
–
–
–
–
–
–
–
–
–
–
–
PPT3
PPT1
1
1
0
0
PPT2
PPT0
1
0
1
0
–
–
Programmable timer 3–2 interrupt
priority register
Programmable timer 1–0 interrupt
priority register
–
–
Priority
level
Level 3
Level 2
Level 1
Level 0
0
0
R/W
R/W
00FF2A D7
D6
D5
D4
D3
D2
D1
D0
–
–
–
–
PPT7
PPT6
PPT5
PPT4
Constantly "0" when
being read
–
–
–
–
0
0
R/W
R/W
–
–
–
–
–
–
–
–
PPT7
PPT5
1
1
0
0
PPT6
PPT4
1
0
1
0
–
–
–
–
Programmable timer 7–6 interrupt
priority register
Programmable timer 5–4 interrupt
priority register
Priority
level
Level 3
Level 2
Level 1
Level 0