UPD78F1144AGB-GAH-AX Renesas Electronics America, UPD78F1144AGB-GAH-AX Datasheet - Page 326

• Manufacturer Part Number: UPD78F1144AGB-GAH-AX
• Description: MCU 16BIT 78K0R/KX3 64-LQFP
• Manufacturer: Renesas Electronics America
• Series: 78K0R/Kx3r

Specifications of UPD78F1144AGB-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: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K 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: -

324
<Obtaining temperature T
<14> Calculate the temperature by using either of the following methods.
<Finishing A/D conversion>
<15> Clear ADCS to 0.
<16> Clear ADCE to 0.
<17> Clear bit 5 (ADCEN) of peripheral enable register 0 (PER0) to 0.
T
NOW
• When obtaining a temperature through calculation
• When obtaining a temperature through table reference
Cautions 1. Make sure the period of <2> to <5> is 1
During measurement at reference temperatures, write ADT0 and ADT1 to the internal flash memory
by means such as self programming. During actual measurement, calculate the current temperature
T
Measure and calculate the temperature sensor detection values (ADT0/ADT1 × 256) based on ADT0
and ADT1 at each temperature interval. Set the temperature corresponding to that value as table
data, and write it to the internal flash memory by means such as self programming.
During actual measurement, calculate the temperature sensor detection value (ADT0/ADT1 × 256)
based on ADT0 and ADT1 at that time, compare it with the value of table data, and obtain the current
temperature T
NOW
≅
ADT1
by using the following expression, based on ADT0 and ADT1 at that time.
2. <2> can be done between <3> and <4>.
3. The period from <7> to <10> differs from the conversion time set using bits 5 to 1
4. Do not change the AV
BASE2
the result of the third and later conversion becomes valid on the sensor 0 side.
(FR2 to FR0, LV1, LV0) of ADM. The period from <9> to <10> is the conversion time
set using FR2 to FR0, LV1, and LV0.
sensor detection value does not depend on the AV
problem even if the AV
must be stable during a measurement cycle (from <4> to <13>).
ADT1
NOW
× (ADT1
NOW
.
NOW
>
× (ADT1
BASE1
CHAPTER 10 A/D CONVERTER
User’s Manual U17854EJ9V0UD
× ADT0
BASE1
REF
NOW
× ADT0
REF
voltage during <4> to <13>. Although the temperature
− ADT0
voltage varies at every temperature measurement, it
BASE2
BASE1
− ADT0
μ
× ADT1
s or more. If ADCS is set to 1 within 1
BASE1
NOW
× ADT1
) × (T
REF
voltage and thus there is no
BASE2
BASE2
)
− T
BASE1
)
+ T
BASE1
μ
s,