UPD78F1152AGC-GAD-AX Renesas Electronics America, UPD78F1152AGC-GAD-AX Datasheet - Page 334

• Manufacturer Part Number: UPD78F1152AGC-GAD-AX
• Description: MCU 16BIT 78K0R/KX3 80-LQFP
• Manufacturer: Renesas Electronics America
• Series: 78K0R/Kx3r

Specifications of UPD78F1152AGC-GAD-AX

• Core Processor: 78K/0R
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: 3-Wire SIO, I²C, LIN, UART/USART
• Peripherals: DMA, LVD, POR, PWM, WDT
• Number Of I /o: 65
• Program Memory Size: 64KB (64K x 8)
• Program Memory Type: FLASH
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 8x10b, D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

10.5.3 Temperature sensor operation
332
(1) Temperature sensor detection value
When using a temperature sensor, determine as reference temperatures two points of temperature (high and
low) in the temperature range to be used, and measure the result of A/D conversion with temperature sensors
0 and 1 at each reference temperature in advance. Perform the measurement in the same environment as the
one in which the temperature sensor is used in a set.
By using an expression of temperature sensor detection value characteristics, which are obtained from the
values of high and low reference temperatures and the result of A/D conversion with temperature sensors 0
and 1 at an arbitrary temperature, the temperature at that time can be obtained.
Remark The value obtained from the ratio of the results of A/D conversion with a sensor that depends/does
The characteristics (reference value) of the temperature sensor detection value are as follows.
• Sensor that depends on temperature
• Sensor that does not depend on temperature
• Temperature sensor detection value = KTV =
Figure 10-17. Characteristics of Temperature Sensor Detection Value (Reference Value)
Conversion channel: temperature sensor 0 (ANI0 side)
A/D conversion result: ADT0
Conversion channel: temperature sensor 1 (ANI1 side)
A/D conversion result: ADT1
not depend on temperature is called a “temperature sensor detection value”.
Characteristics of temperature sensor detection value
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120
110
100
90
80
70
60
50
−40˚C
CHAPTER 10 A/D CONVERTER
User’s Manual U17893EJ8V0UD
Temperature (T
ADT0
ADT1
25˚C
× 256
A
)
85˚C