22 ELECTRICAL CHARACTERISTICS
22-16
Seiko Epson Corporation
S1C31D50/D51 TECHNICAL MANUAL
(Rev. 2.00)
RFC reference/sensor oscillation frequency-
RFC reference/sensor oscillation current
temperature characteristic
consumption-frequency characteristic
R
REF
/R
SEN
= 100 k
W
, C
REF
= 1,000 pF, Typ. value
C
REF
= 1,000 pF, Ta = 25 °C, Typ. value
-50
18
16
14
12
10
8
6
4
2
0
-25
0
25
50
75
100
Ta [
°
C]
f
RFCLK
[kHz]
V
DD
= 3.6 V
1.8 V
0.1
1
10
100
10,000
1,000
1,800
1,600
1,400
1,200
1,000
800
600
400
200
0
f
RFCLK
[kHz]
I
RFC
[µA]
V
DD
= 3.6 V
1.8 V