UPD78F1146AGB-GAH-AX Renesas Electronics America, UPD78F1146AGB-GAH-AX Datasheet - Page 325

• Manufacturer Part Number: UPD78F1146AGB-GAH-AX
• Description: MCU 16BIT 78K0R/KX3 64-LQFP
• Manufacturer: Renesas Electronics America
• Series: 78K0R/Kx3r

Specifications of UPD78F1146AGB-GAH-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: 50
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 12K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

10.5.4 Procedures for using temperature sensors
(1) Procedure for using temperature sensors
(2) Procedure for obtaining ADT0 and ADT1 of temperature sensors 0 and 1
<1> Perform the following steps in the same environment as the one in which the temperature sensor is used
<2> To obtain a temperature, perform A/D conversion for the voltage output from temperature sensors 0 and
(ADT0
temperature measurement)
<Initial setting for A/D conversion>
<1>
<2>
<3>
<Measurement by temperature sensor 0>
<4>
<5>
<6>
<7>
<8>
<Measurement by temperature sensor 1>
<9>
<10> The first A/D conversion ends and an interrupt request signal (INTAD) occurs.
<11> The second A/D conversion ends and an interrupt request signal (INTAD) occurs.
<12> The third A/D conversion ends and an interrupt request signal (INTAD) occurs.
<13> Read A/D conversion data (ADT1) from the A/D conversion result register (ADCR).
(The procedure is continued on the next page.)
in a set
Store the above values into the internal flash memory area by means such as writing them via self
programming, or store them into an external memory.
1 and calculation by using the expression based on ADT0 and ADT1, or calculate the temperature
sensor detection value and compare it with table data prepared in advance.
• When obtaining a temperature through calculation
• When obtaining a temperature through table reference
Remark When obtaining the temperature through calculation and the result of A/D conversion by
Set bit 5 (ADCEN) of peripheral enable register 0 (PER0) to 1.
Set bit 0 (ADCE) of the A/D converter mode register (ADM) to 1.
Select the conversion time by using bits 5 to 1 (FR2 to FR0, LV1 and LV0) of ADM.
Set the analog input channel specification register (ADS) to “80H” to select temperature sensor 0.
Set bit 7 (ADCS) of ADM to 1 to start A/D conversion operation.
The first A/D conversion ends and an interrupt request signal (INTAD) occurs.
The second A/D conversion ends and an interrupt request signal (INTAD) occurs.
Read A/D conversion data (ADT0) from the A/D conversion result register (ADCR).
Set the analog input channel specification register (ADS) to “81H” to select temperature sensor 1.
BASE1
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 the
reference temperature in advance, before shipment of the set.
Measure the temperature sensor detection values at each temperature in advance, and prepare
them as table data.
, ADT1
temperature sensors 0 and 1 at a high and low temperature, it is recommended to determine
the upper and lower end of the temperature range as the reference temperatures for
measurement.
BASE1
, ADT0
BASE2
CHAPTER 10 A/D CONVERTER
and ADT1
User’s Manual U17854EJ9V0UD
BASE2
at reference temperatures, ADT0
NOW
and ADT1
NOW
during
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