R5F21334CNFP#U0 Renesas Electronics America, R5F21334CNFP#U0 Datasheet - Page 494

• Manufacturer Part Number: R5F21334CNFP#U0
• Description: MCU 1KB FLASH 16K ROM 32-LQFP
• Manufacturer: Renesas Electronics America
• Series: R8C/3x/33Cr

Specifications of R5F21334CNFP#U0

• Core Processor: R8C
• Core Size: 16/32-Bit
• Speed: 20MHz
• Connectivity: I²C, LIN, SIO, SSU, UART/USART
• Peripherals: POR, PWM, Voltage Detect, WDT
• Number Of I /o: 27
• Program Memory Size: 16KB (16K x 8)
• Program Memory Type: FLASH
• Ram Size: 1.5K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 12x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 32-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

R8C/33C Group
REJ09B0570-0100 Rev.1.00 Dec. 14, 2009
Page 464 of 589
27.3
Figure 27.2
Figure 27.3
27.3.1
27.3.2
Conversion time
The analog input shares pins P0_0 to P0_7, and P1_0 to P1_3 in AN0 to AN11.
When using the ANi (i = 0 to 11) pin as input, set the corresponding port direction bit to 0 (input mode).
After changing the A/D operating mode, select an analog input pin again.
Figure 27.2 shows a Timing Diagram of A/D Conversion. Figure 27.3 shows the A/D Conversion Cycles (φAD
= fAD).
Start process
(Minimum)
Note:
process
Common Items for Multiple Modes
Start
43 φ AD
1. The conversion time (minimum) is 43 φ AD for 8-bit and 10-bit resolution.
Input/Output Pins
A/D Conversion Cycles
(1)
Timing Diagram of A/D Conversion
A/D Conversion Cycles (φAD = fAD)
Charging time
Open-circuit
Open-circuit
detection
detection
Start process
Start process
(Minimum)
1 φ AD
15 φAD cycles
Sampling time
Conversion time of 1st bit
Disabled: 0 φ AD
Enabled: 2 φ AD
Charging time
Open-circuit
Open-circuit
detection
detection
A/D conversion execution time
Comparison
time
Sampling time
A/D conversion execution time
15 φ AD
Conversion time at the 1st bit
Comparison
* Repeat until conversion ends
2nd bit
time
Comparison
Comparison
time
2.5 φ AD
time
……
at the 2nd bit and
Conversion time
Comparison
the follows
2.5 φ AD
Comparison
time
time
27. A/D Converter
End process
End process
End process
End process
2 φ AD