DF2437FV Renesas Electronics America, DF2437FV Datasheet - Page 198

• 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: -

7.4
Port 3 is an 8-bit I/O port. Port 3 pins also function as bidirectional data bus and ExIRQ input pins.
Port 3 functions change according to the operating mode.
Port 3 has the following registers.
• Port 3 data direction register (P3DDR)
• Port 3 data register (P3DR)
• Port 3 register (PORT3)
• Port 3 pull-up MOS control register (P3PCR)
7.4.1
The individual bits in P3DDR specify input or output for the pins of port 3. The read value is
undefined.
Rev.2.00 May. 28, 2009 Page 158 of 732
REJ09B0059-0200
Bit
7
6
5
4
3
2
1
0
Bit Name
P37DDR
P36DDR
P35DDR
P34DDR
P33DDR
P32DDR
P31DDR
P30DDR
Port 3
Port 3 Data Direction Register (P3DDR)
Initial Value
0
0
0
0
0
0
0
0
R/W
W
W
W
W
W
W
W
W
Description
•
•
•
In normal extended mode
Operation is not affected.
In multiplex extended mode
Operates as single-chip mode
In single-chip mode
The corresponding port 3 pins are output ports
when the P3DDR bits are set to 1, and input
ports when cleared to 0.