DF2437FV Renesas Electronics America, DF2437FV Datasheet - Page 586
DF2437FV
Manufacturer Part Number
DF2437FV
Description
IC H8S/2437 MCU FLASH 128QFP
Manufacturer
Renesas Electronics America
Series
H8® H8S/2400r
Specifications of DF2437FV
Core Processor
H8S/2600
Core Size
16-Bit
Speed
20MHz
Connectivity
I²C, SCI
Peripherals
POR, PWM, WDT
Number Of I /o
85
Program Memory Size
256KB (256K x 8)
Program Memory Type
FLASH
Ram Size
16K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 3.6 V
Data Converters
A/D 16x10b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 75°C
Package / Case
128-QFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
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Company:
Part Number:
DF2437FV
Manufacturer:
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Quantity:
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shown in figure 18.7. 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 AN15) 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
the analog input pin voltage. Careful consideration is therefore required when deciding the circuit
constants.
Table 18.6 Analog Pin Specifications
Rev.2.00 May. 28, 2009 Page 546 of 732
REJ09B0059-0200
Item
Analog input capacitance
Permissible signal source impedance
Notes:
*
1
Values are reference values.
1.
2. R
*
1
10 µF
in
: Input impedance
Figure 18.7 Example of Analog Input Protection Circuit
R
in
*
2
0.01 µF
100
0.1 µF
—
—
Min.
AV
Vref
AN0 to AN15
AV
CC
SS
5
Max.
20
in
), an error will arise in
Unit
pF
kΩ
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