HD6432351 Datasheet, PDF (405/989 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

9.13 Port F
9.13.1 Overview
Port F is an 8-bit I/O port. Port F pins also function as bus control signal input/output pins (AS,
RD, HWR, LWR, LCAS, WAIT, BREQO, BREQ, and BACK) and the system clock (ø) output
pin.
Figure 9-25 shows the port F pin configuration.
Port F
Port F pins
Pin functions in modes 1 and 2*
PF₇/ ø
PF₆/ AS
PF₅/ RD
PF₄/ HWR
PF₃/ LWR
PF₂/ LCAS/ WAIT / BREQO
PF₁/ BACK
PF₀/ BREQ
PF₇ (input) / ø (output)
AS (output)
RD (output)
HWR (output)
LWR (output)
PF₂ (I/O)/WAIT (input) /BREQO (output)
PF₁ (I/O)/BACK (output)
PF₀ (I/O)/BREQ (input)
Pin functions in modes 3 and 7*
PF₇ (input)/ ø (output)
PF₆ (I/O)
PF₅ (I/O)
PF₄ (I/O)
PF₃ (I/O)
PF₂ (I/O)
PF₁ (I/O)
PF₀ (I/O)
Pin functions in modes 4 to 6*
PF₇ (input) / ø (output)
AS (output)
RD (output)
HWR (output)
LWR (output)
PF₂ (I/O)/ LCAS (output) / WAIT (input) / BREQO (output)
PF₁ (I/O)/ BACK (output)
PF₀ (I/O)/ BREQ (input)
Note: * Modes 2, 3, 6, and 7 only apply to the H8S/2351.
Figure 9-25 Port F Pin Functions
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