22 ELECTRICAL CHARACTERISTICS
22-12
Seiko epson Corporation
S1C17F13 TeChniCal Manual
(Rev. 1.0)
RFC reference/sensor oscillation current
RFC reference/sensor oscillation current
consumption-frequency characteristic
consumption-frequency characteristic
(DC oscillation mode)
(AC oscillation mode)
C
REF
= 1,000 pF, Ta = 25 °C, Typ. value
C
REF
= 1,000 pF, Ta = 25 °C, Typ. value
0.1
3,000
2,500
2,000
1,500
1,000
500
0
10
1
100
1,000
10,000
f
RFCLK
[kHz]
I
RFC
[µA]
V
DD
= 2.0 V
V
DD
= 3.6 V
3,000
2,500
2,000
1,500
1,000
500
0
f
RFCLK
[kHz]
I
RFC
[µA]
V
DD
= 2.0 V
V
DD
= 3.6 V
0.1
10
1
100
1,000
10,000
Temperature Detection Circuit Characteristics
22.15
Analog characteristics
Unless otherwise specified: V
DD
= 2.0 to 3.6 V, V
SS
= 0 V, Ta = -20 to 70
°
C
Item
Symbol
Condition
Min.
Typ.
Max.
Unit
Resolution
–
8
bit
Temperature sensor output voltage stabilization time t
STAB
10
ms
Temperature sensor output voltage comparison time t
CMP
150
µs
Temperature detection range
T
RNG
-40
85
°
C
Temperature detection error
E
TEM
T
RNG
= 0 to 50
°
C
±
2
±
5
°
C
Temperature detection circuit current consumption
Unless otherwise specified: V
DD
= 2.0 to 3.6 V, V
SS
= 0 V, Ta = 25
°
C
Item
Symbol
Condition
Min.
Typ.
Max.
Unit
Temperature detection circuit operating current
*
1
I
TEM
6
12
µA
*
1 This value is added to the current consumption during HALT/execution (with or without heavy load protection mode) when the
temperature detection circuit is active.
Temperature detection circuit conversion value
-ambient temperature characteristic
-40 -30 -20 -10 0
90
10 20 30 40 50 60 70 80
0xe6
0xdc
0xd2
0xc8
0xbe
0xb4
0xaa
0xa0
0x96
0x8c
0x82
0x78
0x6e
0x64
0x5a
0x50
Ambient temperature (in the constant temperature bath)
[°C]
∗
2
A/D con
version count v
alue (TEMRSL
T.TEMP[7:0] bits)
*
2 This characteristic was measured in 150 µs of the conversion time (comparison time) after canceling SLEEP status by placing the
device in the constant temperature bath.
The temperature detection circuit measures temperature inside the device. Depending on the use environment, the difference
between the measured temperature and the ambient temperature may be increased. When using the measured temperature as
the ambient temperature, prepare an appropriate conversion table according to the use environment.