UPD78F1146AGB-GAH-AX Renesas Electronics America, UPD78F1146AGB-GAH-AX Datasheet - Page 321

• 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: -

10.5.2 Registers used by temperature sensors
Cautions 1. Set the conversion times so as to satisfy the following condition.
Remark f
A/D Converter Mode Register (ADM)
FR2
0
0
0
0
1
1
1
The following four types of registers are used when using a temperature sensor.
(1) Peripheral enable register 0 (PER0)
(2) A/D converter mode register (ADM)
• Peripheral enable register 0 (PER0)
• A/D converter mode register (ADM)
• Analog input channel specification register (ADS)
• 10-bit A/D conversion result register (ADCR)
Caution Setting of the A/D port configuration register (ADPC), port mode register 2 (PM2) and port
Use the PER0 register in the same manner as during A/D converter basic operation (see 10.3 (1) Peripheral
enable register 0 (PER0)).
Use the ADM register in the same manner as during A/D converter basic operation (see 10.3 (2)
converter mode register (ADM)).
However, selection of the A/D conversion time when a temperature sensor is used varies as shown in Table 10-
5.
FR1
Other than above
0
0
1
1
0
0
1
2. When rewriting FR2 to FR0, LV1, and LV0 to other than the same data, stop A/D conversion
3. The above conversion time does not include clock frequency errors. Select conversion time,
CLK
f
(ADCS = 0) beforehand.
taking clock frequency errors into consideration.
: CPU/peripheral hardware clock frequency
AD
FR0
Table 10-5. Selection of A/D Conversion Time When Using Temperature Sensor
register 2 (P2) is not required when using the temperature sensor. There is no problem if the
pin function is set as digital I/O.
0
1
0
1
0
1
1
= 0.6 to 1.8 MHz
LV1
0
0
0
0
0
0
0
LV0
1
1
1
1
1
1
1
480/f
320/f
240/f
160/f
120/f
80/f
40/f
Setting prohibited
CLK
CLK
CLK
CLK
CLK
CLK
CLK
CHAPTER 10 A/D CONVERTER
User’s Manual U17854EJ9V0UD
(1) 2.7 V ≤ AV
Setting prohibited
60.0
40.0
Setting prohibited
f
CLK
μ
μ
s
s
= 2 MHz
Conversion Time Selection
REF
60.0
40.0
30.0
Setting prohibited
≤ 5.5 V
f
CLK
μ
μ
μ
s
s
s
= 8 MHz
24.0
Setting prohibited
f
CLK
μ
= 20 MHz
s
f
f
f
f
f
f
f
CLK
CLK
CLK
CLK
CLK
CLK
CLK
Conversion Clock
/12
/8
/6
/4
/3
/2
(f
AD
)
319
A/D