Renesas Hitachi H8S/2191, Hardware Manual, Page: 268 / 1065

Rev. 2.0, 11/00, page 241 of 1037
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 Alternative Function
P17 (standard I/O port) TMOW (frequency division clock output)
P16 (standard I/O port)
,&
(input capture input)
P15 (standard I/O port)
,54
(external interrupt request input)
P14 (standard I/O port)
,54
(external interrupt request input)
P13 (standard I/O port)
,54
(external interrupt request input)
P12 (standard I/O port)
,54
(external interrupt request input)
P11 (standard I/O port)
,54
(external interrupt request input)
Port 1
P10 (standard I/O port)
,54
(external interrupt request input)
11.3.2 Register Configuration
Table 11.6 shows the port 1 register configuration.
Table 11.6 Port 1 Register Configuration
Name Abbrev. R/W Size Initial Value Address *
Port mode register 1 PMR1 R/W Byte H'00 H'FFCE
Port control register 1 PCR1 W Byte H'00 H'FFD1
Port data register 1 PDR1 R/W Byte H'00 H'FFC1
MOS pull-up select
register 1 PUR1 R/W Byte H'00 H'FFE1
Note: * Lower 16 bits of the address.