16 R/F COnVeRTeR
16-8
Seiko epson Corporation
S1C63003/004/008/016 TeChniCal Manual
(Rev. 1.1)
Continuous Oscillation Function
16.6
By setting the RFCNT register to "1," the reference oscillation or sensor oscillation can be continued even if the
stop condition has been met. This function with RFOUT enabled allows easy measurement of the CR oscillation
frequency.
i/O Memory of R/F Converter
16.7
Table 16.7.1 shows the I/O addresses and the control bits for the R/F converter.
7.1 Control bits of R/F converter
Table 16.
Address
Register name R/W Default
Setting/data
Function
FF15H D3 0 (
*
3)
R
– (
*
2)
–
Unused
D2
RFCKS2
R/W
0
7 f
3
/4
4 PT1 (
*
6) 1 f
1
R/F converter clock frequency selection
(f
1
= f
OSC1
, f
3
= f
OSC3
)
D1
RFCKS1
R/W
0
6 f
3
/2
3 f
1
/4
0 Off
D0
RFCKS0
R/W
0
5 f
3
2 f
1
/2
FF60H D3
RFCnT
R/W
0
1 Continuous
0 Normal
Continuous oscillation enable
D2
RFOuT
R/W
0
1 Enable
0 Disable
RFOUT enable
D1
eRF1
R/W
0
3 Ch.1 DC
1 Ch.0 DC
R/F conversion selection
D0
eRF0
R/W
0
2 Ch.1 AC
0 I/O
FF61H D3
OVTC
R/W
0
1 Overflow error
0 No error
Time base counter overflow flag
D2
OVMC
R/W
0
1 Overflow error
0 No error
Measurement counter overflow flag
D1
RFRunR
R/W
0
1 Run
0 Stop
Reference oscillation Run control/status
D0
RFRunS
R/W
0
1 Run
0 Stop
Sensor oscillation Run control/status
FF62H D3
MC3
R/W
×
0H–FH
Measurement counter MC0–MC3
MC0 = LSB
D2
MC2
R/W
×
D1
MC1
R/W
×
D0
MC0
R/W
×
FF63H D3
MC7
R/W
×
0H–FH
Measurement counter MC4–MC7
D2
MC6
R/W
×
D1
MC5
R/W
×
D0
MC4
R/W
×
FF64H D3
MC11
R/W
×
0H–FH
Measurement counter MC8–MC11
D2
MC10
R/W
×
D1
MC9
R/W
×
D0
MC8
R/W
×
FF65H D3
MC15
R/W
×
0H–FH
Measurement counter MC12–MC15
D2
MC14
R/W
×
D1
MC13
R/W
×
D0
MC12
R/W
×
FF66H D3
MC19
R/W
×
0H–FH
Measurement counter MC16–MC19
MC19 = MSB
D2
MC18
R/W
×
D1
MC17
R/W
×
D0
MC16
R/W
×
FF67H D3
TC3
R/W
×
0H–FH
Time base counter TC0–TC3
TC0 = LSB
D2
TC2
R/W
×
D1
TC1
R/W
×
D0
TC0
R/W
×
FF68H D3
TC7
R/W
×
0H–FH
Time base counter TC4–TC7
D2
TC6
R/W
×
D1
TC5
R/W
×
D0
TC4
R/W
×
FF69H D3
TC11
R/W
×
0H–FH
Time base counter TC8–TC11
D2
TC10
R/W
×
D1
TC9
R/W
×
D0
TC8
R/W
×
FF6AH D3
TC15
R/W
×
0H–FH
Time base counter TC12–TC15
D2
TC14
R/W
×
D1
TC13
R/W
×
D0
TC12
R/W
×
FF6BH D3
TC19
R/W
×
0H–FH
Time base counter TC16–TC19
TC19 = MSB
D2
TC18
R/W
×
D1
TC17
R/W
×
D0
TC16
R/W
×
*
1 Initial value at initial reset
*
2 Not set in the circuit
*
3 Constantly "0" when being read
*
4 Unused in the S1C63003/004/008
*
5 Unused in the S1C63003/004
*
6 Unused in the S1C63003