HD64F2638F20J Datasheet, PDF (310/1512 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2600 Series

Section 9 I/O Ports
H8S/2639, H8S/2638, H8S/2636,
H8S/2630, H8S/2635 Group
9.7 Port B
9.7.1 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, TIOCB5) and as address outputs; the pin
functions change according to the operating mode.
Port B has an on-chip MOS input pull-up function that can be controlled by software.
Figure 9-8 shows the port B pin configuration.
Port B
Port B pins
PB7 / A15/TIOCB5
PB6 / A14/TIOCA5
PB5 / A13/TIOCB4
PB4 / A12/TIOCA4
PB3 / A11/TIOCD3
PB2 / A10/TIOCC3
PB1/A9 /TIODB3
PB0/A8 /TIOCA3
Pin functions in modes 4 to 6
PB7 (input) / A15 (output) / TIOCB5 (I/O)
PB6 (input) / A14 (output) / TIOCA5 (I/O)
PB5 (input) / A13 (output) / TIOCB4 (I/O)
PB4 (input) / A12 (output) / TIOCA4 (I/O)
PB3 (input) / A11 (output) / TIOCD3 (I/O)
PB2 (input) / A10 (output) / TIOCC3 (I/O)
PB1 (input) / A9 (output) / TIOCB3 (I/O)
PB0 (input) / 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)
Figure 9-8 Port B Pin Functions
Page 260 of 1458
REJ09B0103-0800 Rev. 8.00
May 28, 2010