HD6417660 RENESAS [Renesas Technology Corp], HD6417660 Datasheet - Page 667

• Manufacturer Part Number: HD6417660
• Description: Renesas 32-Bit RISC Microcomputer
• Manufacturer: RENESAS [Renesas Technology Corp]

23.2
Port B is an 8-bit input/output port with the pin configuration shown in figure 23.2. Each pin has
an input pull-up MOS, which is controlled by the port B control register (PBCR) in the PFC.
23.2.1
Port B has the following register. Refer to section 27, List of Registers, for the address of this
register and state of this register in each processing mode.
• Port B data register (PBDR)
23.2.2
PBDR is an 8-bit readable/writable register that stores data for pin PTB7 to PTB0. Bits PB7DT to
PB0DT correspond to pins PTB7 to PTB0. When the pin function is general output port, if the port
is read, the value of the corresponding PBDR bit is returned directly. When the function is general
input port, if the port is read, the corresponding pin level is read.
Bit
7
6
5
4
3
2
1
0
Bit Name
PB7DT
PB6DT
PB5DT
PB4DT
PB3DT
PB2DT
PB1DT
PB0DT
Port B
Register Description
Port B Data Register (PBDR)
Initial
Value
0
0
0
0
0
0
0
0
Port B
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Figure 23.2 Port B
Description
Table 23.2 shows the function of PBDR.
PTB7 (input/output) / BS (output)
PTB6 (input/output) / REFOUT (output)
PTB5 (input/output) / RD/WR (output)
PTB4 (input/output) / RAS (output)
PTB3 (input/output) / CAS (output)
PTB2 (input/output) / CKE (output)
PTB1 (input/output) / IRQ1 (input)
PTB0 (input/output) / IRQ0 (input)
Rev. 1.00, 02/04, page 629 of 804