354
10.4.2
Register Configuration
Table 10-6 shows the port 4 register configuration. Port 4 is an input-only port, and does not have
a data direction register or data register.
Table 10-6 Port 4 Registers
Name
Abbreviation
R/W
Initial Value
Address
*
Port 4 register
PORT4
R
Undefined
H'FFB3
Note:
*
Lower 16 bits of the address.
Port 4 Register (PORT4): The pin states are always read when a port 4 read is performed.
Bit
:
7
6
5
4
3
2
1
0
P47
P46
P45
P44
P43
P42
P41
P40
Initial value :
—
*
—
*
—
*
—
*
—
*
—
*
—
*
—
*
R/W
:
R
R
R
R
R
R
R
R
Note:
*
Determined by state of pins P47 to P40.
10.4.3
Pin Functions
Port 4 pins also function as A/D converter analog input pins (AN0 to AN7) and D/A converter
analog output pins (DA0 and DA1).
Содержание H8S/2631
Страница 28: ...xviii Appendix G Package Dimensions 1154 ...
Страница 341: ...316 Transfer SAR or DAR DAR or SAR Block area First block Nth block Figure 9 8 Memory Mapping in Block Transfer Mode ...
Страница 918: ...905 ø DREQ0 DREQ1 tDRQS tDRQH Figure 25 19 DMAC DREQ Input Timing ...
Страница 955: ...943 A 2 Instruction Codes Table A 2 shows the instruction codes ...