R5F21346CNFP#U0 Renesas Electronics America, R5F21346CNFP#U0 Datasheet - Page 625
R5F21346CNFP#U0
Manufacturer Part Number
R5F21346CNFP#U0
Description
MCU 1KB FLASH 32K ROM 48-LQFP
Manufacturer
Renesas Electronics America
Series
R8C/3x/34Cr
Datasheet
1.R5F21346CNFPU0.pdf
(759 pages)
Specifications of R5F21346CNFP#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
43
Program Memory Size
32KB (32K x 8)
Program Memory Type
FLASH
Ram Size
2.5K 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
48-LQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
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R8C/34C Group
REJ09B0586-0100 Rev.1.00 Jan 13, 2010
Page 592 of 723
28.3
Figure 28.2
Figure 28.3
28.3.1
28.3.2
Start process
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 28.2 shows a Timing Diagram of A/D Conversion. Figure 28.3 shows the A/D Conversion Cycles ( φ AD
= fAD).
process
Start
Conversion time
Common Items for Multiple Modes
(Minimum)
Note:
43 φAD
Input/Output Pins
A/D Conversion Cycles
1. The conversion time (minimum) is 43 φAD for 8-bit and 10-bit resolution.
Charging time
Timing Diagram of A/D Conversion
A/D Conversion Cycles ( φ AD = fAD)
Open-circuit
Open-circuit
detection
detection
(1)
Start process
Start process
(Minimum)
1 φAD
Sampling time
15 φAD cycles
Conversion time of 1st bit
Disabled: 0 φAD
Enabled: 2 φAD
Charging time
Open-circuit
Open-circuit
detection
detection
A/D conversion execution time
Comparison
time
Sampling time
A/D conversion execution time
15 φAD
Conversion time at the 1st bit
Comparison
* Repeat until conversion ends
2nd bit
time
Comparison
Comparison
2.5 φAD
time
time
……
at the 2nd bit and
Conversion time
Comparison
the follows
2.5 φAD
time
Comparison
time
End process
End process
28. A/D Converter
2 φAD
End process
End process
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