Datasheet

Section 10A I/O Ports
(H8S/2633, H8S/2632, H8S/2631, H8S/2633R)
Page 408 of 1434 R01UH0166EJ0600 Rev. 6.00
Mar 02, 2011
H8S/2633 Group, H8S/2633 F-ZTAT
TM
,
H8S/2633R F-ZTAT
TM
, H8S/2695
10A.7 Port A
10A.7.1 Overview
Port A is a 4-bit I/O port. Port A pins also function as SCI2 I/O pins (SCK2, RxD2, and TxD2)
and as address bus outputs. The pin functions change according to the operating mode.
Port A has a built-in MOS input pull-up function that can be controlled by software.
Figure 10A.6 shows the port A pin configuration.
PA3/A19/SCK2
PA2/A18/RxD2
PA1/A17/TxD2
PA0/A16
Port A pins
Pin functions in mode 7
PA3 (I/O) / A19 (output) / SCK2 (I/O)
PA2 (I/O) / A18 (output) / RxD2 (input)
PA1 (I/O) / A17 (output) / TxD2 (output)
PA0 (I/O) / A16 (output)
Pin functions in modes 4 to 6
PA3 (I/O) / SCK2 (output)
PA2 (I/O) / RxD2 (input)
PA1 (I/O) / TxD2 (output)
PA0 (I/O)
Port A
Figure 10A.6 Port A Pin Functions