DF2506BR26DV Renesas Electronics America, DF2506BR26DV Datasheet - Page 828

• Manufacturer Part Number: DF2506BR26DV
• Description: IC H8S/2506 MCU FLASH 176-LFBGA
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2500r

Specifications of DF2506BR26DV

• 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: 512KB (512K 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: 176-LFBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

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