R5F21102DFP#U0 Renesas Electronics America, R5F21102DFP#U0 Datasheet - Page 116

• Manufacturer Part Number: R5F21102DFP#U0
• Description: IC R8C MCU FLASH 8K 32LQFP
• Manufacturer: Renesas Electronics America
• Series: M16C™ M16C/R8C/Tiny/10r

Specifications of R5F21102DFP#U0

• Core Processor: R8C
• Core Size: 16-Bit
• Speed: 16MHz
• Connectivity: SIO, UART/USART
• Peripherals: LED, WDT
• Number Of I /o: 22
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 32-LQFP
• For Use With: R0K521134S000BE - KIT EVAL STARTER FOR R8C/13R0E521134EPB00 - KIT EMULATOR PROBE FOR PC7501R0E521134CPE00 - EMULATOR COMPACT R8C/13
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

R8C/10 Group
Rev.1.20 Jan 27, 2006
REJ09B0019-0120
14. A/D Converter
NOTES:
1. Does not depend on use of sample and hold function.
2. The frequency of
3. In repeat mode, only 8-bit mode can be used.
Table 14.1 Performance of A/D converter
Method of A/D conversion Successive approximation (capacitive coupling amplifier)
Analog input voltage
Operating clock
Resolution
Integral nonlinearity error
Operating modes
Analog input pins
A/D conversion start condition ADST bit in ADCON0 register is set to “1” (A/D conversion starts)
Conversion speed per pin • Without sample and hold function
The A/D converter consists of one 10-bit successive approximation A/D converter circuit with a capacitive
coupling amplifier. The analog inputs share the pins with P0
make sure the corresponding port direction bits are set to “0” (input mode).
When not using the A/D converter, set the VCUT bit to “0” (Vref unconnected), so that no current will flow
from the V
The result of A/D conversion is stored in the AD register.
Table 14.1 shows the performance of the A/D converter. Figure 14.1 shows a block diagram of the A/D
converter, and Figures 14.2 and 14.3 show the A/D converter-related registers.
When AVcc is less than 4.2V,
Without sample and hold function, the
With the sample and hold function, the
Item
REF
pin into the resistor ladder, helping to reduce the power consumption of the chip.
AD (2)
page 104 of 180
AD
(1)
must be 10 MHz or less.
0V to Vref
AV
AV
8-bit or 10-bit (selectable)
AV
• 8-bit resolution ±2LSB
• 10-bit resolution ±3LSB
AVcc = Vref = 3.3V
• 8-bit resolution ±2LSB
• 10-bit resolution ±5LSB
One-shot mode and repeat mode
8 pins (AN
• With sample and hold function
8-bit resolution: 49
8-bit resolution: 28
CC
CC
CC
AD
= 5V f
= 3V divide-by-2 of f
= Vref = 5V
must be f
0
to AN
AD
AD
AD
, divide-by-2 of f
frequency should be 250 kHz or more.
7
frequency should be 1 MHz or more.
AD
)
/2 or less by dividing f
AD
AD
cycles, 10-bit resolution: 59
cycles, 10-bit resolution: 33
AD
, divide-by-4 of f
Performance
AD
(3)
0
, divide-by-4 of f
to P0
7
. Therefore, when using these pins,
AD
.
AD
AD
AD
AD
cycles
cycles
14. A/D Converter