8 i/o memory of programmable timer – Epson S1C63558 User Manual
Page 81
S1C63558 TECHNICAL MANUAL
EPSON
71
CHAPTER 4: PERIPHERAL CIRCUITS AND OPERATION (Programmable Timer)
4.10.8 I/O memory of programmable timer
Table 4.10.8.1 shows the I/O addresses and the control bits for the programmable timer.
Table 4.10.8.1 Control bits of programmable timer
Address
Comment
D3
D2
Register
D1
D0
Name
Init
∗
1
1
0
CHSEL
PTOUT
CKSEL1
CKSEL0
0
0
0
0
Timer1
On
OSC3
OSC3
Timer0
Off
OSC1
OSC1
TOUT output channel selection
TOUT output control
Prescaler 1 source clock selection
Prescaler 0 source clock selection
R/W
FFC1H
CHSEL PTOUT CKSEL1 CKSEL0
PTPS01
PTPS00
PTRST0
∗
3
PTRUN0
0
0
–
∗
2
0
Reset
Run
Invalid
Stop
Prescaler 0
division ratio
selection
Timer 0 reset (reload)
Timer 0 Run/Stop
W
R/W
R/W
FFC2H
PTPS01 PTPS00 PTRST0 PTRUN0
0
∗
3
EVCNT
FCSEL
PLPOL
–
∗
2
0
0
0
Event ct.
With NR
Timer
No NR
Unused
Timer 0 counter mode selection
Timer 0 function selection (for event counter mode)
Timer 0 pulse polarity selection (for event counter mode)
R
R/W
FFC0H
0
EVCNT FCSEL
PLPOL
0
1/1
1
1/4
2
1/32
3
1/256
[PTPS01, 00]
Division ratio
PTPS11
PTPS10
PTRST1
∗
3
PTRUN1
0
0
–
∗
2
0
Reset
Run
Invalid
Stop
Prescaler 1
division ratio
selection
Timer 1 reset (reload)
Timer 1 Run/Stop
W
R/W
R/W
FFC3H
PTPS11 PTPS10 PTRST1 PTRUN1
RLD03
RLD02
RLD01
RLD00
0
0
0
0
MSB
Programmable timer 0 reload data (low-order 4 bits)
LSB
R/W
FFC4H
RLD03
RLD02
RLD01
RLD00
RLD07
RLD06
RLD05
RLD04
0
0
0
0
MSB
Programmable timer 0 reload data (high-order 4 bits)
LSB
R/W
FFC5H
RLD07
RLD06
RLD05
RLD04
RLD13
RLD12
RLD11
RLD10
0
0
0
0
MSB
Programmable timer 1 reload data (low-order 4 bits)
LSB
R/W
FFC6H
RLD13
RLD12
RLD11
RLD10
RLD17
RLD16
RLD15
RLD14
0
0
0
0
MSB
Programmable timer 1 reload data (high-order 4 bits)
LSB
R/W
FFC7H
RLD17
RLD16
RLD15
RLD14
PTD03
PTD02
PTD01
PTD00
0
0
0
0
MSB
Programmable timer 0 data (low-order 4 bits)
LSB
R
FFC8H
PTD03
PTD02
PTD01
PTD00
PTD07
PTD06
PTD05
PTD04
0
0
0
0
MSB
Programmable timer 0 data (high-order 4 bits)
LSB
R
FFC9H
PTD07
PTD06
PTD05
PTD04
PTD13
PTD12
PTD11
PTD10
0
0
0
0
MSB
Programmable timer 1 data (low-order 4 bits)
LSB
R
FFCAH
PTD13
PTD12
PTD11
PTD10
PTD17
PTD16
PTD15
PTD14
0
0
0
0
MSB
Programmable timer 1 data (high-order 4 bits)
LSB
R
FFCBH
PTD17
PTD16
PTD15
PTD14
0
1/1
1
1/4
2
1/32
3
1/256
[PTPS11, 10]
Division ratio
FFE2H
0
0
EIPT1
EIPT0
R
R/W
0
∗
3
0
∗
3
EIPT1
EIPT0
–
∗
2
–
∗
2
0
0
Enable
Enable
Mask
Mask
Unused
Unused
Interrupt mask register (Programmable timer 1)
Interrupt mask register (Programmable timer 0)
FFF2H
0
0
IPT1
IPT0
R
R/W
0
∗
3
0
∗
3
IPT1
IPT0
–
∗
2
–
∗
2
0
0
(R)
Yes
(W)
Reset
(R)
No
(W)
Invalid
Unused
Unused
Interrupt factor flag (Programmable timer 1)
Interrupt factor flag (Programmable timer 0)
*1 Initial value at initial reset
*2 Not set in the circuit
*3 Constantly "0" when being read