HD6432345 Datasheet, PDF (260/907 Pages) Hitachi Semiconductor – H8S/2345 F-ZTAT Hardware Manual

8.7 Port B
8.7.1 Overview
Port B is an 8-bit I/O port. Port B has an address bus output function, and the pin functions change
according to the operating mode.
Port B has a built-in MOS input pull-up function that can be controlled by software.
Figure 8.9 shows the port B pin configuration.
Port B
Port B pins
PB₇/ A₁₅
PB₆/ A₁₄
PB₅/ A₁₃
PB₄/ A₁₂
PB₃/ A₁₁
PB₂/ A₁₀
PB₁/ A₉
PB₀/ A₈
Pin functions in modes 1, 4, and 5*
A₁₅ (output)
A₁₄ (output)
A₁₃ (output)
A₁₂ (output)
A₁₁ (output)
A₁₀ (output)
A₉ (output)
A₈ (output)
Pin functions in modes 2 and 6*
PB₇ (input)/A₁₅ (output)
PB₆ (input)/A₁₄ (output)
PB₅ (input)/A₁₃ (output)
PB₄ (input)/A₁₂ (output)
PB₃ (input)/A₁₁ (output)
PB₂ (input)/A₁₀ (output)
PB₁ (input)/A₉ (output)
PB₀ (input)/A₈ (output)
Pin functions in modes 3 and 7*
PB₇ (I/O)
PB₆ (I/O)
PB₅ (I/O)
PB₄ (I/O)
PB₃ (I/O)
PB₂ (I/O)
PB₁ (I/O)
PB₀ (I/O)
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.
Figure 8.9 Port B Pin Functions
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