UPD78F1000GB-GAF-AX Renesas Electronics America, UPD78F1000GB-GAF-AX Datasheet - Page 570

• Manufacturer Part Number: UPD78F1000GB-GAF-AX
• Description: MCU 16BIT 78K0R/KX3-L 44-LQFP
• Manufacturer: Renesas Electronics America
• Series: 78K0R/Kx3-Lr

Specifications of UPD78F1000GB-GAF-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: 33
• Program Memory Size: 16KB (16K x 8)
• Program Memory Type: FLASH
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 10x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

78K0R/Kx3-L
13.4.2 Input voltage and conversion results
theoretical A/D conversion result (stored in the 10-bit A/D conversion result register (ADCR)) is shown by the following
expression.
R01UH0106EJ0300 Rev.3.00
Oct 01, 2010
The relationship between the analog input voltage input to the analog input pins (ANI0 to ANI15, PGAI) and the
or
where, INT( ):
Figure 13-13 shows the relationship between the analog input voltage and the A/D conversion result.
SAR = INT (
ADCR = SAR × 64
(
ADCR
Remark ANI0 to ANI9: 78K0R/KC3-L (40-pin, 44-pin)
64
V
AV
ADCR: A/D conversion result register (ADCR) value
SAR:
AIN
REF
− 0.5) ×
:
Figure 13-13. Relationship Between Analog Input Voltage and A/D Conversion Result
:
ANI0 to ANI10: 78K0R/KC3-L (48-pin) and 78K0R/KD3-L
ANI0 to ANI11: 78K0R/KE3-L, 78K0R/KF3-L
ANI0 to ANI15: 78K0R/KG3-L
A/D conversion result
AV
Function which returns integer part of value in parentheses
Analog input voltage
AV
Successive approximation register
V
AIN
REF
REF
AV
1024
× 1024 + 0.5)
REF
pin voltage
≤ V
AIN
< (
ADCR
1023
1022
1021
64
SAR
3
2
1
0
+ 0.5) ×
2048
1
1024
1
AV
1024
2048
3
REF
1024
2
2048
5
Input voltage/AV
1024
3
2043
2048
REF
1022
1024
2045
2048
CHAPTER 13 A/D CONVERTER
1023
1024
2047
2048
ADCR
1
FFC0H
FF80H
FF40H
00C0H
0080H
0040H
0000H
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