Renesas Hitachi H8S/2191, Hardware Manual

Page: 307 / 1065

Rev. 2.0, 11/00, page 280 of 1037
11.9 Port 7
11.9.1 Overview
Port 7 is an 8-bit I/O port. Table 11.23 shows the port 7 configuration.
Port 7 consists of pins that are used both as standard I/O ports (P77 to P70) and HSW timing
generation circuit (programmable pattern generator: PPG) outputs (PPG7 to PPG0). It is
switched by port mode register 7 (PMR7) and port control register 7 (PCR7).
For the programmable generator (PPG), see section 28.4, HSW Timing Generation Circuit.
Table 11.23 Port 7 Configuration
Port Function Alternative Function
P77 (standard I/O port) PPG7 (HSW timing output)
P76 (standard I/O port) PPG6 (HSW timing output)
P75 (standard I/O port) PPG5 (HSW timing output)
P74 (standard I/O port) PPG4 (HSW timing output)
P73 (standard I/O port) PPG3 (HSW timing output)
P72 (standard I/O port) PPG2 (HSW timing output)
P71 (standard I/O port) PPG1 (HSW timing output)
Port 7
P70 (standard I/O port) PPG0 (HSW timing output)
11.9.2 Register Configuration
Table 11.24 shows the port 7 register configuration.
Table 11.24 Port 7 Register Configuration
Name Abbrev. R/W Size Initial Value Address *
Port mode register 7 PMR7 R/W Byte H'00 H'FFDE
Port control register 7 PCR7 W Byte H'00 H'FFD7
Port control register 7 PDR7 R/W Byte H'00 H'FFC7
Note:
*
Lower 16 bits of the address.