Register Configuration - Renesas Hitachi H8S/2194 Series Hardware Manual

11.2.2

Register Configuration

Table 11.3 shows the port 0 register configuration.
Table 11.3 Port 0 Register Configuration
Name
Port mode register 0
Port data register 0
Note: Lower 16 bits of the address.
*
(1) Port Mode Register 0 (PMR0)
Bit : 7
PMR07
Initial value :
0
R/W : R/W
Port mode register 0 (PMR0) controls switching of each pin function of port 0. The switching is
specified in a unit of bit.
PMR0 is an 8-bit read/write enable register. When reset, PMR0 is initialized to H'00.
Bits 7 to 0: P07/AN7 to P00/AN0 Pin Switching (PMR07 to PMR00)
PMR07 to PMR00 sets whether the P0n/ANn pin is used as a P0n input pin or an ANn pin for
the analog input channel of an A/D converter.
Bit n
PMR0n Description
0 The P0n/ANn pin functions as a P0n input pin
1 The P0n/ANn pin functions as an ANn input pin
Abbrev. R/W
PMR0 R/W
PDR0 R
6 5
PMR06 PMR05 PMR04
0 0
R/W R/W
Size
Byte
Byte
4 3
PMR03 PMR02
0 0
R/W R/W R/W
Rev. 2.0, 11/00, page 239 of 1037
Initial Value Address*
H'00 H'FFCD

H'FFC0
2 1 0
PMR01 PMR00
0 0 0
R/W R/W
(Initial value)
(n = 7 to 0)