2-28
Seiko Epson Corporation
S1C31D50 TECHNICAL MANUAL
(Rev. 1.00)
Bits 2
–
0
OSC3WT[2:0]
These bits set the oscillation stabilization waiting time for the OSC3 oscillator circuit.
Table 2.6.12 OSC3 Oscillation Stabilization Waiting Time Setting
CLGOSC3.OSC3WT[2:0] bits
Oscillation stabilization waiting time
0x7
65,536 clocks
0x6
16,384 clocks
0x5
4,096 clocks
0x4
1,024 clocks
0x3
256 clocks
0x2
64 clocks
0x1
16 clocks
0x0
4 clocks
CLG Interrupt Flag Register
Register name
Bit
Bit name
Initial
Reset
R/W
Remarks
CLGINTF
15
–
9
–
0x00
–
R
–
8
OSC3TERIF
0
H0
R/W
Cleared by writing 1.
7
–
0
–
R
–
6
–
0
–
R
5
OSC1STPIF
0
H0
R/W
Cleared by writing 1.
4
OSC3TEDIF
0
H0
R/W
3
–
0
–
R
–
2
OSC3STAIF
0
H0
R/W
Cleared by writing 1.
1
OSC1STAIF
0
H0
R/W
0
IOSCSTAIF
0
H0
R/W
Bits 15
–
9, 7, 6, 3 Reserved
Bit 8
OSC3TERIF
Bit 5
OSC1STPIF
Bit 4
OSC3TEDIF
Bit 2
OSC3STAIF
Bit 1
OSC1STAIF
Bit 0
IOSCSTAIF
These bits indicate the CLG interrupt cause occurrence statuses.
1 (R): Cause of interrupt occurred
0 (R): No cause of interrupt occurred
1 (W): Clear flag
0 (W): Ineffective
Each bit corresponds to the interrupt as follows:
CLGINTF.OSC3TERIF bit: OSC3 oscillation auto-trimming error interrupt
CLGINTF.OSC1STPIF bit: OSC1 oscillation stop interrupt
CLGINTF.OSC3TEDIF bit: OSC3 oscillation auto-trimming completion interrupt
CLGINTF.OSC3STAIF bit: OSC3 oscillation stabilization waiting completion interrupt
CLGINTF.OSC1STAIF bit: OSC1 oscillation stabilization waiting completion interrupt
CLGINTF.IOSCSTAIF bit: IOSC oscillation stabilization waiting completion interrupt
Note:
The CLGINTF.IOSCSTAIF bit is 0 after system reset is canceled, but IOSCCLK has already been stabilized.
Summary of Contents for S1C31D50
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Page 462: ...25 2 Seiko Epson Corporation S1C31D50 TECHNICAL MANUAL Rev 1 00 QFP13 64PIN ...
Page 463: ...25 3 Seiko Epson Corporation S1C31D50 TECHNICAL MANUAL Rev 1 00 TQFP14 80PIN ...
Page 464: ...25 4 Seiko Epson Corporation S1C31D50 TECHNICAL MANUAL Rev 1 00 QFP15 100PIN ...