Port 1; Overview; Register Configuration - Renesas Hitachi H8S/2194 Series Hardware Manual

11.3

Port 1

11.3.1

Overview

Port 1 is an 8-bit I/O port. Table 11.5 shows the port 1 configuration.
Port 1 consists of pins that are used both as standard I/O ports (P17 to P10) and frequency
division clock output (TMOW), input capture input ( ,& ), or external interrupt request inputs
( ,54 to ,54 ). It is switched by port mode register 1 (PMR1) and port control register 1
(PCR1).
Port 1 can select the functions of MOS pull-up transistors.
Table 11.5 Port 1 Configuration
Port Function
Port 1 P17 (standard I/O port)
P16 (standard I/O port)
P15 (standard I/O port)
P14 (standard I/O port)
P13 (standard I/O port)
P12 (standard I/O port)
P11 (standard I/O port)
P10 (standard I/O port)
11.3.2

Register Configuration

Table 11.6 shows the port 1 register configuration.
Table 11.6 Port 1 Register Configuration
Name
Port mode register 1
Port control register 1
Port data register 1
MOS pull-up select
register 1
Note: Lower 16 bits of the address.
*
Abbrev. R/W
PMR1 R/W
PCR1 W
PDR1 R/W
PUR1 R/W
Alternative Function
TMOW (frequency division clock output)
,&
(input capture input)
,54
(external interrupt request input)
,54
(external interrupt request input)
,54
(external interrupt request input)
,54
(external interrupt request input)
,54
(external interrupt request input)
,54
(external interrupt request input)
Size Initial Value
Byte H'00
Byte H'00
Byte H'00
Byte H'00
Rev. 2.0, 11/00, page 241 of 1037
Address*
H'FFCE
H'FFD1
H'FFC1
H'FFE1