DF3048BVX25V Renesas Electronics America, DF3048BVX25V Datasheet - Page 339

• Manufacturer Part Number: DF3048BVX25V
• Description: MCU 3/5V 128K PB-FREE 100-TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300Hr

Specifications of DF3048BVX25V

• Core Processor: H8/300H
• Core Size: 16-Bit
• Speed: 25MHz
• Connectivity: SCI, SmartCard
• Peripherals: DMA, PWM, WDT
• Number Of I /o: 70
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 100-TQFP, 100-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

9.12.2
Table 9.20 summarizes the registers of port B.
Table 9.20 Port B Registers
Address *
H'FFD4
H'FFD6
Note:
Port B Data Direction Register (PBDDR)
PBDDR is an 8-bit write-only register that can select input or output for each pin in port B. When
pins are used for TPC output, the corresponding PBDDR bits must also be set.
While port B acts as an I/O port, a pin in port B becomes an output pin if the corresponding
PBDDR bit is set to 1, and an input pin if this bit is cleared to 0.
PBDDR is a write-only register. Its value cannot be read. All bits return 1 when read.
PBDDR is initialized to H'00 by a reset and in hardware standby mode. In software standby mode
it retains its previous setting. If a PBDDR bit is set to 1 while port B acts as an I/O port, the
corresponding pin maintains its output state in software standby mode.
Bit
Initial value
Read/Write
* Lower 16 bits of the address.
Register Descriptions
Name
Port B data direction register
Port B data register
PB DDR
7
W
7
0
PB DDR
6
W
6
0
PB DDR
5
W
5
0
Port B data direction 7 to 0
These bits select input or output for port B pins
PB DDR
4
W
4
0
PBDDR
PBDR
Abbreviation
PB DDR
Rev. 3.00 Sep 27, 2006 page 311 of 872
3
W
3
0
PB DDR
2
W
2
0
R/W
W
R/W
PB DDR
Section 9 I/O Ports
REJ09B0325-0300
1
W
1
0
Initial Value
H'00
H'00
PB DDR
0
W
0
0