DF2148RTE20IV Renesas Electronics America, DF2148RTE20IV Datasheet - Page 280

• Manufacturer Part Number: DF2148RTE20IV
• Description: MCU 5V 128K I-TEMP,PB-FREE, 100-
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2100r

Specifications of DF2148RTE20IV

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: Host Interface, I²C, IrDA, SCI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 74
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 100-TQFP, 100-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Section 8 I/O Ports
8.4.2
Table 8.8 shows the port 3 register configuration.
Table 8.8
Name
Port 3 data direction register
Port 3 data register
Port 3 MOS pull-up control
register
Note:
Port 3 Data Direction Register (P3DDR)
P3DDR is an 8-bit write-only register, the individual bits of which specify input or output for the
pins of port 3. P3DDR cannot be read; if it is, an undefined value will be returned.
P3DDR is initialized to H'00 by a reset and in hardware standby mode. It retains its prior state in
software standby mode.
Rev. 4.00 Sep 27, 2006 page 234 of 1130
REJ09B0327-0400
Bit
Initial value
Read/Write
Modes 1, 2, and 3 (EXPE = 1)
The input/output direction specified by P3DDR is ignored, and pins automatically function as
data I/O pins.
After a reset, and in hardware standby mode or software standby mode, the data I/O pins go to
the high-impedance state.
Modes 2 and 3 (EXPE = 0)
The corresponding port 3 pins are output ports when P3DDR bits are set to 1, and input ports
when cleared to 0.
* Lower 16 bits of the address.
Register Configuration
Port 3 Registers
P37DDR
W
7
0
P36DDR
W
6
0
Abbreviation
P3DDR
P3DR
P3PCR
P35DDR
W
5
0
P34DDR
W
4
0
R/W
W
R/W
R/W
P33DDR
W
3
0
Initial Value
H'00
H'00
H'00
P32DDR
W
2
0
P31DDR
W
1
0
Address *
H'FFB4
H'FFB6
H'FFAE
P30DDR
W
0
0