RX21A_15 Datasheet, PDF (113/132 Pages) Renesas Technology Corp – Renesas MCUs

RX21A Group
5.8 Temperature Sensor Characteristics
5. Electrical Characteristics
Table 5.42 Temperature Sensor Characteristics
Conditions: VCC = AVCC0 = AVCCA = VREFH0 = 1.8 to 3.6 V, VSS = AVSS0 = AVSSA = VREFL = VREFL0 = VREFDSL = 0 V,
T_a = –40 to +105°C
Item
Symbol
Min.
Typ.
Max.
Unit
Test Conditions
Relative accuracy
―
―
±1.0
―
°C
Temperature slope
1.8 ≤ AVCC0 < 2.7
―
―
7.27
―
mV/°C PGAGAIN = 00b
2.7 ≤ AVCC0 < 3.6
―
10.46
―
PGAGAIN = 01b
AVCC0 = 3.6
―
13.98
―
PGAGAIN = 10b
Output voltage (@25°C)
―
―
1.375
―
V
VCC = 3.6 V
Temperature sensor start time
Sampling time
t_START
―
―
30
―
80
µs Figure 5.63
72
300
µs
PGA restart time
t_{RST_PGA}
―
―
40
µs
tSTART
TSEN
Temperature sensor is operating
tRST_PGA
Temperature
sensor is stopped
PGAEN
Trigger to start A/D
conversion from the
temperature sensor
(internal signal)
A/D converter
PGA is operating
PGA is
stopped
Automatic clearing
A/D activation trigger
PGA is operating
PGA is stopped
Automatic clearing
A/D activation trigger
Idle
Sampling
A/D
conversion
Idle
Sampling
A/D
conversion
Idle
ADTSDR register
1st result of A/D conversion of the temperature 2nd result of A/D conversion of the
sensor output
temperature sensor output
A/D interrupt request
Figure 5.63 A/D Conversion Timing Example of the Temperature Sensor (Two Conversions
Performed)
R01DS0129EJ0110 Rev.1.10
Aug 28, 2014
Page 113 of 132