DF2505BR26DV Renesas Electronics America, DF2505BR26DV Datasheet - Page 836

• Manufacturer Part Number: DF2505BR26DV
• Description: IC H8S/2505 MCU FLASH 176-LFBGA
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2500r

Specifications of DF2505BR26DV

• 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: 176-LFBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Section 21 Clock Pulse Generator
21.9
21.9.1
As various characteristics related to the crystal resonator are closely linked to the user's board
design, thorough evaluation is necessary on the user's part, using the resonator connection
examples shown in this section as a guide. As the resonator circuit ratings will depend on the
floating capacitance of the resonator and the mounting circuit, the ratings should be determined in
consultation with the resonator manufacturer. The design must ensure that a voltage exceeding the
maximum rating is not applied to the oscillator pin.
21.9.2
When designing the board, place the crystal resonator and its load capacitors as close as possible
to the XTAL, EXTAL, OSC1, and OSC2 pins. Make wires as short as possible. Other signal lines
should be routed away from the oscillator circuit, as shown in figure 21.11. This is to prevent
induction from interfering with correct oscillation.
Figure 21.12 shows the recommended connection circuit between the power supply pins and Vss
pin. The CB which is a capacitor for stabilization should be inserted near the pin between the
power supply pins (V
P1V
Rev. 6.00 Sep. 24, 2009 Page 788 of 928
REJ09B0099-0600
CC
line. Other signal lines should not be crossed.
Usage Notes
Note on Crystal Resonator
Note on Board Design
Figure 21.11 Note on Board Design of Oscillator Circuit
CC
, V
CL
, P1V
Avoid
CC
, and P2V
C1
C2
Signal A Signal B
CC
) and Vss pin. Two CBs should be placed for the
EXTAL, OSC1
XTAL, OSC2
This LSI