r5f21368sdfp Renesas Electronics Corporation., r5f21368sdfp Datasheet - Page 568

• Manufacturer Part Number: r5f21368sdfp
• Description: Renesas Mcu R8c Family / R8c/3xt-a Series
• Manufacturer: Renesas Electronics Corporation.

Under development
R8C/36T-A Group
R01UH0240EJ0001 Rev.0.01
Apr 28, 2011
23.2.1
Note:
1. When the on-chip reference voltage is used as an analog input, first set the ADEX0 bit in the ADCON1 register to
After Reset
Bit
b0
b1
b2
b3
b4
b5
b6
b7
Address 00032h
1 (on-chip reference voltage selected) and then set the VREFMON bit to 1 (on-chip reference voltage and analog
input are connected).
When the on-chip reference voltage is not used as an analog input, first set the VREFMON 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
VREFMON On-chip reference voltage to
Bit
Symbol
On-Chip Reference Voltage Control Register (OCVREFCR)
—
—
—
—
—
—
—
Preliminary document
Specifications in this document are tentative and subject to change.
b7
—
0
analog input connect bit
Reserved
b6
—
0
Bit Name
b5
—
0
(1)
b4
—
0
0: On-chip reference voltage and analog input are
1: On-chip reference voltage and analog input are
Set to 0.
cut off
connected
b3
—
0
b2
—
0
Function
b1
—
0
VREFMON
b0
0
23. A/D Converter
Page 537 of 725
R/W
R/W
R/W