R0K572030S000BE Renesas Electronics America, R0K572030S000BE Datasheet - Page 1076

• Manufacturer Part Number: R0K572030S000BE
• Description: KIT DEV FOR SH7203
• Manufacturer: Renesas Electronics America
• Series: Renesas Starter Kits (RSK)r
• Type: MCUr

Specifications of R0K572030S000BE

• Contents: CPU Board, LCD Module, E10A-Lite Emulator, Cable, QuickStart Guide and CD-ROM
• Silicon Manufacturer: Renesas
• Kit Contents: Board
• Silicon Family Name: SH7203
• Silicon Core Number: R5S72030W200FP
• Tool / Board Applications: General Purpose MCU, MPU, DSP, DSC
• Mcu Supported Families: SH7203
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• For Use With/related Products: SH7203
• Lead Free Status / Rohs Status: Compliant

Section 20 A/D Converter (ADC)
20.7.6
Adding capacitance results in coupling with GND, and therefore noise in GND may adversely
affect absolute precision. Be sure to connect AVss, etc. to an electrically stable GND.
Care is also required to insure that filter circuits do not communicate with digital signals on the
mounting board (i.e., acting as antennas).
20.7.7
Before entering deep standby mode, disable A/D conversion by clearing the ADST bit to 0. If the
LSI enters deep standby mode with A/D conversion enabled, the states on the A/D converter pins
are not guaranteed.
20.7.8
Starting conversion immediately after stopping scan mode or multi mode can cause incorrect
conversion results. To continue with conversion in which cases, allow a duration equivalent to the
A/D conversion time for one channel to elapse after clearing ADST to 0 before starting conversion
(by setting ADST to 1). (The A/D conversion time for one channel differs depending on the
peripheral register settings.)
Rev. 3.00 Sep. 28, 2009 Page 1044 of 1650
REJ09B0313-0300
Influences on Absolute Precision
A/D Conversion in Deep Standby Mode
Note on Usage in Scan Mode and Multi Mode
Sensor input
Note: Values are reference values.
Sensor output impedance
Figure 20.10 Example of Analog Input Circuit
Low-pass filter
C to 0.1 μF
Up to 5 kΩ
15 pF
Cin =
This LSI
A/D converter
equivalent circuit
3 kΩ
20 pF