R5F21346CNFP#U0 Renesas Electronics America, R5F21346CNFP#U0 Datasheet - Page 619
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 586 of 723
28.2
28.2.1
Note:
After Reset
1. When on-chip reference voltage is used as analog input, first set the ADEX0 bit in the ADCON1 register to 1 (on-
Bit
b0
b1
b2
b3
b4
b5
b6
b7
Address 0026h
chip reference voltage selected) and then set the OCVREFAN bit to 1 (on-chip reference voltage and analog
input are connected).
When on-chip reference voltage is not used as analog input, first set the OCVREFAN bit to 0 (on-chip reference
voltage and analog input are cut off) and then set the ADEX0 bit to 0 (extended analog input pin not selected).
Set the PRC3 bit in the PRCR register to 1 (write enabled) before rewriting the OCVREFCR register.
If the contents of the OCVREFCR register are rewritten during A/D conversion, the conversion result is
undefined.
Symbol
Registers
OCVREFAN On-chip reference voltage to
Bit
Symbol
On-Chip Reference Voltage Control Register (OCVREFCR)
—
—
—
—
—
—
—
b7
—
0
analog input connect bit
Reserved bits
b6
—
0
Bit Name
b5
—
0
(1)
b4
—
0
0: On-chip reference voltage and analog input are cut off
1: On-chip reference voltage and analog input are
Set to 0.
connected
b3
—
0
b2
—
0
Function
b1
—
0
OCVREFAN
b0
0
28. A/D Converter
R/W
R/W
R/W
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