DF2367VF33 Renesas Electronics America, DF2367VF33 Datasheet - Page 738

• Manufacturer Part Number: DF2367VF33
• Description: MCU 3V 384K 128-QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2300r

Specifications of DF2367VF33

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 33MHz
• Connectivity: I²C, IrDA, SCI, SmartCard
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 84
• Program Memory Size: 384KB (384K x 8)
• Program Memory Type: FLASH
• Ram Size: 24K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 10x10b, D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 128-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Other names: HD64F2367VF33; HD64F2367VF33

Section 16 A/D Converter
16.7.6
A protection circuit connected to prevent damage due to an abnormal voltage such as an excessive
surge at the analog input pins (AN0 to AN7, AN12, AN13) should be connected between AVcc
and AVss as shown in figure 16.7. Also, the bypass capacitors connected to AVcc and the filter
capacitor connected to AN0 to AN15 must be connected to AVss.
If a filter capacitor is connected, the input currents at the analog input pins (AN0 to AN7, AN12,
AN13) are averaged, and so an error may arise. Also, when A/D conversion is performed
frequently, as in scan mode, if the current charged and discharged by the capacitance of the
sample-and-hold circuit in the A/D converter exceeds the current input via the input impedance
(R
when deciding the circuit constants.
Rev.6.00 Mar. 18, 2009 Page 678 of 980
REJ09B0050-0600
Notes:
in
), an error will arise in the analog input pin voltage. Careful consideration is therefore required
*
1
Notes on Noise Countermeasures
Values are reference values.
1.
2. R
*
1
10 µF
in
: Input impedance
Figure 16.7 Example of Analog Input Protection Circuit
R
in
*
2
0.01 µF
100 Ω
0.1 µF
AV
Vref
AN0 to AN7, AN12, AN13
AV
CC
SS