HD6432351 Datasheet, PDF (383/989 Pages) Renesas Technology Corp – The H8S/2000 CPU has an internal 32-bit architecture, is provided with sixteen 16-bit general registers and a concise

9.9 Port B
9.9.1 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. However, in the H8S/2350, port B pins function only as address
outputs.
Port B has a built-in MOS input pull-up function that can be controlled by software (H8S/2351
only).
Figure 9-11 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 2, 3, 6, and 7 only apply to the H8S/2351.
Figure 9-11 Port B Pin Functions
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