DF2437FV Renesas Electronics America, DF2437FV Datasheet - Page 680
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
-
Available stocks
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Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
DF2437FV
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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21.2
Clock pulses can be supplied either by connecting a crystal resonator or by providing external
clock input.
21.2.1
Figure 21.2 shows a typical method of connecting a crystal resonator. An appropriate damping
resistance R
should be used.
Figure 21.3 shows the equivalent circuit of a crystal resonator. A crystal resonator having the
characteristics given in table 21.2 should be used.
Table 21.1 Damping Resistor Values
Frequency (MHz)
R
Rev.2.00 May. 28, 2009 Page 640 of 732
REJ09B0059-0200
d
(Ω)
Oscillator
Connecting Crystal Resonator
d
, given in table 21.1, should be used. An AT-cut parallel-resonance crystal resonator
XTAL
Figure 21.2 Typical Connection to Crystal Resonator
Figure 21.3 Equivalent Circuit of Crystal Resonator
10
0
EXTAL
XTAL
L
R
d
12
0
C
C
L
0
C
C
AT-cut parallel-resonance crystal resonator
L1
L2
R
s
16
0
EXTAL
C
L1
= C
20
0
L2
= 10 to 22 pF
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