Rev. 5.00, 12/03, page 248 of 1088
8.5.3
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).
8.6
Port A
8.6.1
Overview
Port A is a 4-bit I/O port. Port A pins also function as address bus outputs. The pin functions
change according to the operating mode.
Port A has a built-in MOS input pull-up function that can be controlled by software.
Figure 8-5 shows the port A pin configuration.
PA3/A19
PA2/A18
PA1/A17
PA0/A16
Note:
*
Modes 6 and 7 are not available in the ROMless versions.
Port A pins
A19 (output)
A18 (output)
A17 (output)
A16 (output)
Pin functions in modes 4 and 5
PA3 (input)/A19 (output)
PA2 (input)/A18 (output)
PA1 (input)/A17 (output)
PA0 (input)/A16 (output)
Pin functions in mode 6
*
PA3 (I/O)
PA2 (I/O)
PA1 (I/O)
PA0 (I/O)
Pin functions in mode 7
*
Port A
Figure 8-5 Port A Pin Functions
Содержание H8S/2318 series
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