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23.5. Clock Generator (CLG) Characteristics
Oscillator circuit characteristics including resonators change depending on conditions (board pattern,
components used, etc.). Use these characteristic values as a reference and perform matching evaluation
using the actual printed circuit board.
IOSC oscillator circuit characteristics
Unless otherwise specified: V
DD
Item
Oscillation start time
Oscillation frequency
IOSC oscillation frequency-temperature characteristic
V
= 1.8 to 5.5 V, PWGACTL.REGSEL bit = 1, Typ. value
DD
23-6
= 1.8 to 5.5 V, V
= 0 V, Ta = -40 to 85 °C
SS
Symbol
t
staI
f
CLGIOSC.IOSCFQ[1:0] bits = 0x2,
IOSC
PWGACTL.REGSEL bit = 1
CLGIOSC.IOSCFQ[1:0] bits = 0x1,
PWGACTL.REGSEL bit = 1
CLGIOSC.IOSCFQ[1:0] bits = 0x0,
PWGACTL.REGSEL bit = 1
CLGIOSC.IOSCFQ[1:0] bits = 0x1,
PWGACTL.REGSEL bit = 0
CLGIOSC.IOSCFQ[1:0] bits = 0x0,
PWGACTL.REGSEL bit = 0
Seiko Epson Corporation
Condition
V
= 1.8 to 5. 5 V, PWGACTL.REGSEL bit = 0, Typ. value
DD
Min.
Typ.
Max.
Unit
–
–
3
µs
7.2
8
8.4
MHz
1.8
2
2.1
MHz
0.9
1
1.05
MHz
1.62
1.8
1.89
MHz
0.78
0.9
1.02
MHz
6
S1C31D50 TECHNICAL MANUAL
(Rev. 1.00)
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