UPD78F1146AGB-GAH-AX Renesas Electronics America, UPD78F1146AGB-GAH-AX Datasheet - Page 324

• 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: -

322
(2) How to calculate temperature
As shown in Figure 10-17, the temperature sensor detection value makes a characteristics curve that is linear
with respect to the temperature. Therefore, the temperature sensor detection value can be expressed with the
following expressions.
Temperature sensor detection value ≅ Tilt × (T
KTV
When ADT0
KTV
Thus, temperature T
T
T
T
KTV
KTV
KTV
KTV
KTV
KTV
T
Remarks 1. When obtaining a temperature through calculation, it is recommended to determine the
NOW
NOW
BASE1
NOW
BASE1
NOW
BASE1
BASE2
NOW
ADT1
ADT0
ADT1
ADT0
ADT1
BASE1
BASE2
NOW
≅
:
≅
≅
:
, KTV
(KTV
(KTV
:
ADT1
=
: Temperature sensor detection value at a low reference temperature
: Temperature sensor detection value at a high reference temperature
=
=
BASE1
BASE1
BASE2
BASE2
NOW
NOW
2. In addition to calculation, temperature T
(T
Low reference temperature, T
Temperature during sensor operation
Temperature sensor detection value during temperature measurement
ADT0
ADT1
BASE2
ADT0
ADT1
ADT0
ADT1
BASE2
NOW
BASE2
BASE2
upper and lower end of the temperature range as the reference temperatures for
measurement.
temperature sensor detection values at each temperature in advance, preparing them as
table data, and comparing them with the temperature sensor detection value during
temperature measurement. With this method, table data must be created for each interval
of temperatures to be detected.
:
:
: Result of A/D conversion (sensor 0) at a low reference temperature
: Result of A/D conversion (sensor 1) at a low reference temperature
: Result of A/D conversion (sensor 0) at a high reference temperature
: Result of A/D conversion (sensor 1) at a high reference temperature
(KTV
, and KTV
NOW
NOW
− KTV
ADT1
Result of A/D conversion (sensor 0) during temperature measurement
Result of A/D conversion (sensor 1) during temperature measurement
NOW
BASE1
BASE1
BASE2
BASE2
− KTV
− T
× (ADT1
is obtained by using the following expressions.
BASE2
BASE1
× 256
NOW
BASE1
× 256
× 256
BASE1
)
NOW
× (ADT1
− KTV
BASE1
) × (T
)
CHAPTER 10 A/D CONVERTER
× (T
are obtained as follows.
User’s Manual U17854EJ9V0UD
× ADT0
BASE1
BASE2
NOW
BASE1
)
− T
− T
NOW
BASE2
× ADT0
BASE1
BASE1
NOW
− ADT0
: High reference temperature
− T
) + KTV
)
+ T
BASE2
BASE1
BASE1
BASE1
− ADT0
BASE1
) + Offset
NOW
× ADT1
BASE1
can also be obtained by measuring the
NOW
× ADT1
) × (T
BASE2
BASE2
)
− T
BASE1
)
+ T
BASE1