HD6432345 Datasheet, PDF (259/907 Pages) Hitachi Semiconductor – H8S/2345 F-ZTAT Hardware Manual

Port A
When PADDR = 1
A₁₉ (output)
A₁₈ (output)
A₁₇ (output)
A₁₆ (output)
When PADDR = 0
PA₃ (input)
PA₂ (input)
PA₁ (input)
PA₀ (input)
Figure 8.8 Port A Pin Functions (Mode 6)*
8.6.4 MOS Input Pull-Up Function
Port A has a built-in MOS input pull-up function that can be controlled by software. This MOS
input pull-up function can be used in modes 1, 2, 3, 6, and 7*, and cannot be used in modes 4 and
5. MOS input pull-up can be specified as on or off on an individual bit basis.
When a PADDR bit is cleared to 0, setting the corresponding PAPCR bit to 1 turns on the MOS
input pull-up for that pin.
The MOS input pull-up function is in the off state after a power-on reset, and in hardware standby
mode. The prior state is retained after a manual reset, and in software standby mode.
Table 8.10 summarizes the MOS input pull-up states.
Table 8.10 MOS Input Pull-Up States (Port A)
Modes
Power-On Hardware
Manual Software
Reset
Standby Mode Reset Standby Mode
1 to 3, 6, 7* PA₃ to PA₀ OFF
ON/OFF
4, 5
PA₃ to PA₀
OFF
Legend:
OFF : MOS input pull-up is always off.
ON/OFF : On when PADDR = 0 and PAPCR = 1; otherwise off.
In Other
Operations
Note: * Modes 1 to 3 are not available on the F-ZTAT version.
Modes 2, 3, 6, and 7 are not available on the ROMless version.
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