Port B; 8.1 Overview - Renesas H8S/2633 Series Hardware Manual

10B.8 Port B
10B.8.1 Overview
Port B is an 8-bit I/O port. Port B pins also function as TPU I/O pins (TIOCA3, TIOCB3,
TIOCC3, TIOCD3, TIOCA4, TIOCB4, TIOCA5, and TIOCB5) and as address outputs; the pin
functions change according to the operating mode.
Port B has a built-in MOS input pull-up function that can be controlled by software.
Figure 10B-9 shows the port B pin configuration.

Port B

478
Port B pins
PB7/A15/TIOCB5
PB6/A14/TIOCA5
PB5/A13/TIOCB4
PB4/A12/TIOCA4
PB3/A11/TIOCD3
PB2/A10/TIOCC3
PB1/A9 /TIOCB3
PB0/A8 /TIOCA3
Figure 10B-9 Port B Pin Functions
Pin functions in modes 4 to 6
PB7 (I/O) / A15 (output) / TIOCB5 (I/O)
PB6 (I/O) / A14 (output) / TIOCA5 (I/O)
PB5 (I/O) / A13 (output) / TIOCB4 (I/O)
PB4 (I/O) / A12 (output) / TIOCA4 (I/O)
PB3 (I/O) / A11 (output) / TIOCD3 (I/O)
PB2 (I/O) / A10 (output) / TIOCC3 (I/O)
PB1 (I/O) / A9 (output) / TIOCB3 (I/O)
PB0 (I/O) / A8 (output) / TIOCA3 (I/O)
Pin functions in mode 7
PB7 (I/O) / TIOCB5 (I/O)
PB6 (I/O) / TIOCA5 (I/O)
PB5 (I/O) / TIOCB4 (I/O)
PB4 (I/O) / TIOCA4 (I/O)
PB3 (I/O) / TIOCD3 (I/O)
PB2 (I/O) / TIOCC3 (I/O)
PB1 (I/O) / TIOCB3 (I/O)
PB0 (I/O) / TIOCA3 (I/O)