RENESAS TECHNICAL UPDATE TN-RX*-A000A/E
Date:
Feb.
25, 2014
RENESAS TECHNICAL UPDATE
1753, Shimonumabe, Nakahara-ku, Kawasaki-shi, Kanagawa 211-8668 Japan
Renesas Electronics Corporation
Product
Category
Title
MPU & MCU
Document
No.
TN-RX*-A090A/E
Rev.
1.00
Restriction on AVCC0 in the RX111 Group
Lot No.
Information
Technical Notification
Category
Applicable
RX111 Group
Product
All
Reference
Document
RX111 Group User's Manual:
Hardware Rev.1.00
(R01UH0365EJ0100)
This document describes a restriction on the operating conditions for AVCC0 in RX111 Group User's Manual: Hardware.
1.
Restriction
Set the voltage for the AVCC0 pin to the same voltage as the VCC pin.
Corrections to the Manual
Since the above restriction is added, descriptions in the manual are corrected as follows.
2.
•Page
1077 of 1209
Descriptions in 30.7.10 are corrected as follows:
Before correction
•
Relationship between power supply pin pairs (AVCC0–AVSS0, VREFH0–VREFL0, VCC–VSS)
Relationship between AVSS0 and VSS: AVSS0 = VSS.
A 0.1-μF capacitor should be connected between each pair of
power supply pins to create a closed loop with the shortest
rout
possible as shown in Figure 30.16, and connection
should be made so that the following conditions are satisfied at the supply side.
VREFL0 = AVSS0 = VSS
When the A/D converter is not used, the following conditions should be satisfied.
VREFH0 = AVCC0 = VCC and VREFL0 = AVSS0 = VSS
After correction
•
Relationship between power supply pin pairs (AVCC0–AVSS0, VREFH0–VREFL0, VCC–VSS)
The following conditions should be satisfied: AVCC0 = VCC, and AVSS0 = VSS.
A 0.1-μF capacitor should be
connected between each pair of power supply pins to create a closed loop with the shortest
route
possible as shown in
Figure 30.16, and connection should be made so that the following conditions are satisfied at the supply side.
VREFL0 = AVSS0 = VSS
When the A/D converter is not used, the following conditions should be satisfied.
VREFH0 = AVCC0 = VCC and VREFL0 = AVSS0 = VSS
©2014. Renesas Electronics Corporation, All rights reserved.
Page 1 of 2
RENESAS TECHNICAL UPDATE
TN-RX*-A090A/E
Date:
Feb.
25, 2014
•Page
1147 of 1209
Table 36.2 is corrected as follows:
Before correction
Table 36.2
Recommended
Operating
Voltage
Conditions
Item
Recommended operating voltage conditions
Symbol
VCC, VCC_USB*
1
AVCC0*
2
Value
1.8 to 3.6 (during no USB communication)
3.0 to 3.6 (during USB communication)
1.8 to 3.6
Unit
V
V
Note 1. Set VCC and VCC_USB to the same potential. Also, set VSS, AVSS0, and VSS_USB to the same potential.
Note 2.
AVCC0 and VCC can be set individually within the operating range.
For details, 30.7.10 Voltage Range of Analog Power
Supply Pins.
After correction
Table 36.2 Operating Conditions
Item
Power supply voltage
Symbol
VCC
VSS
Conditions
The USB is not used.
The USB is used.
Min.
1.8
3.0
—
—
—
—
—
Typ.
—
—
0
VCC
0
VCC
0
Max.
3.6
3.6
—
—
—
—
—
Unit
V
V
V
V
V
V
V
USB power supply voltage
Analog power supply voltage
VCC_USB
VSS_USB
AVCC0 *
1
AVSS0
Note 1. For details,
refer to section
30.7.10, Voltage Range of Analog Power Supply Pins.
Page 2 of 2
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