DF2505FC26V Renesas Electronics America, DF2505FC26V Datasheet - Page 828
DF2505FC26V
Manufacturer Part Number
DF2505FC26V
Description
IC H8S/2505 MCU FLASH 144QFP
Manufacturer
Renesas Electronics America
Series
H8® H8S/2500r
Specifications of DF2505FC26V
Core Processor
H8S/2000
Core Size
16-Bit
Speed
26MHz
Connectivity
I²C, SCI
Peripherals
POR, PWM, WDT
Number Of I /o
104
Program Memory Size
384KB (384K x 8)
Program Memory Type
FLASH
Ram Size
32K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 5.5 V
Data Converters
A/D 16x10b; D/A 2x8b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
144-QFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
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Section 21 Clock Pulse Generator
21.2
System clock pulses can be supplied by connecting a crystal resonator, or by input of an external
clock.
21.2.1
A crystal resonator can be connected as shown in the example in figure 21.2. Select the damping
resistance R
Table 21.1 Damping Resistance Value
Figure 21.3 shows the equivalent circuit of the crystal resonator. Use a crystal resonator that has
the characteristics shown in table 21.2.
Rev. 6.00 Sep. 24, 2009 Page 780 of 928
REJ09B0099-0600
Frequency (MHz)
R
d
(Ω)
Note:
System Clock Oscillator
Connecting Crystal Resonator
d
according to table 21.1. An AT-cut parallel-resonance crystal should be used.
C
Figure 21.2 Connection of Crystal Resonator (Example)
L1
XTAL
and C
Figure 21.3 Crystal Resonator Equivalent Circuit
8
200
EXTAL
XTAL
L2
are reference values including the floating capacitance of the board.
L
R
10
100
d
C
C
L
0
C
C
L1
L2
AT-cut parallel-resonance type
12
0
R
s
EXTAL
16
0
C
L1
= C
L2
= 10 to 22pF
20
0
25
0
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