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