DF2437FV Renesas Electronics America, DF2437FV Datasheet - Page 205

• 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: -

7.5
Port 4 is an 8-bit I/O port. Port 4 pins also function as external interrupt pins, TMR0_0, TMR0_1,
TMRX_0, TMRY_0, TMRX_1, TMRY_1, and FRT_1 input pins, and PWM output pins.
Port 4 has the following registers.
• Port 4 data direction register (P4DDR)
• Port 4 data register (P4DR)
• Port 4 register (PORT4)
7.5.1
The individual bits in P4DDR specify input or output for the pins of port 4. The read value is
undefined.
Bit
7
6
5
4
3
2
1
0
Bit Name
P47DDR
P46DDR
P45DDR
P44DDR
P43DDR
P42DDR
P41DDR
P40DDR
Port 4
Port 4 Data Direction Register (P4DDR)
Initial Value
0
0
0
0
0
0
0
0
R/W
W
W
W
W
W
W
W
W
Description
While a general I/O port function is selected, the
corresponding port 4 pin is an output port when a
P4DDR bit is set to 1, and an input port when
cleared to 0.
Rev.2.00 May. 28, 2009 Page 165 of 732
REJ09B0059-0200