DF2505FC26V Renesas Electronics America, DF2505FC26V Datasheet - Page 313

• 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: -

9.18
Unused input pins should be fixed high or low. Generally, the input pins of CMOS products are
high-impedance. Leaving unused pins open can cause the generation of intermediate levels due to
peripheral noise induction. This can result in shoot-through current inside the device and cause it
to malfunction. Table 9.7 lists examples of ways to handle unused pins.
Table 9.7
Port Name
Port 1
Port 2
Port 3
Port 4
Port 5
Port 7
Port 9
Port A
Port B
Port C
Port D
Port E
Port F
Port G
Port H
Port J
Handling of Unused Pins
Examples of Ways to Handle Unused Input Pins
Pin Handling Example
Connect each pin to P2Vcc (pull-up) or to Vss (pull-down) via a resistor.
Connect each pin to AVcc (pull-up) or to AVss (pull-down) via a resistor.
Connect each pin to P1Vcc (pull-up) or to Vss (pull-down) via a resistor.
Connect each pin to P2Vcc (pull-up) or to Vss (pull-down) via a resistor.
Connect each pin to AVcc (pull-up) or to AVss (pull-down) via a resistor.
Connect each pin to P1Vcc (pull-up) or to Vss (pull-down) via a resistor.
Rev. 6.00 Sep. 24, 2009 Page 265 of 928
Section 9 I/O Ports
REJ09B0099-0600