UPD78F0500AMC-CAB-AX Renesas Electronics America, UPD78F0500AMC-CAB-AX Datasheet - Page 410

• Manufacturer Part Number: UPD78F0500AMC-CAB-AX
• Description: MCU 8BIT 30SSOP
• Manufacturer: Renesas Electronics America
• Series: 78K0/Kx2r

Specifications of UPD78F0500AMC-CAB-AX

• Core Processor: 78K/0
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: 3-Wire SIO, I²C, LIN, UART/USART
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 23
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

78K0/Kx2
13.2 Configuration of A/D Converter
(1) ANI0 to ANI7 pins
(2) Sample & hold circuit
(3) Series resistor string
(4) Voltage comparator
(5) Successive approximation register (SAR)
(6) 10-bit A/D conversion result register (ADCR)
R01UH0008EJ0401 Rev.4.01
Jul 15, 2010
The A/D converter includes the following hardware.
These are the analog input pins of the 8-channel A/D converter. They input analog signals to be converted into digital
signals. Pins other than the one selected as the analog input pin can be used as I/O port pins.
Remark ANI0 to ANI3: 78K0/KB2
The sample & hold circuit samples the input voltage of the analog input pin selected by the selector when A/D
conversion is started, and holds the sampled voltage value during A/D conversion.
The series resistor string is connected between AV
sampled voltage value.
The voltage comparator compares the sampled voltage value and the output voltage of the series resistor string.
This register converts the result of comparison by the voltage comparator, starting from the most significant bit (MSB).
When the voltage value is converted into a digital value down to the least significant bit (LSB) (end of A/D conversion),
the contents of the SAR register are transferred to the A/D conversion result register (ADCR).
The A/D conversion result is loaded from the successive approximation register to this register each time A/D
conversion is completed, and the ADCR register holds the A/D conversion result in its higher 10 bits (the lower 6 bits
are fixed to 0).
ANI0 to ANI5: 38-pin products of the 78K0/KC2
ANI0 to ANI7: Products other than above
Figure 13-2. Circuit Configuration of Series Resistor String
AV
AV
REF
SS
P-ch
REF
Series resistor string
and AV
SS
, and generates a voltage to be compared with the
ADCS
CHAPTER 13 A/D CONVERTER
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