Datasheet

Section 10B I/O Ports
(H8S/2695)
R01UH0166EJ0600 Rev. 6.00 Page 533 of 1434
Mar 02, 2011
H8S/2633 Group, H8S/2633 F-ZTAT
TM
,
H8S/2633R F-ZTAT
TM
, H8S/2695
10B.12 Port F
10B.12.1 Overview
Port F is an 8-bit I/O port. Port F pins also function as external interrupt input pins (IRQ2 and
IRQ3), A/D trigger input pin (ADTRG), bus control signal input/output pins (AS, RD, HWR,
LWR, WAIT, BREQO, BREQ, and BACK), and the system clock (φ) output pin.
Figure 10B.18 shows the port F pin configuration.
PF7/φ
PF6/AS
PF5/RD
PF4/HWR
PF3/LWR/ADTRG/IRQ3
PF2/WAIT /BREQO
PF1/BACK
PF0/BREQ/IRQ2
Port F
Port F pins
PF7
PF6
PF5
PF4
PF3
PF2
PF1
PF0
(input) / φ (output)
(I/O)
(I/O)
(I/O)
(I/O) / ADTRG (input) / IRQ3 (input)
(I/O)
(I/O)
(I/O) / IRQ2 (input)
Pin functions in mode 7
PF7 (input) / φ (output)
AS (output)
RD (output)
HWR (output)
PF3 (I/O) / LWR (output) / ADTRG (input) / IRQ3 (input)
PF2 (I/O) / WAIT (input) / BREQO (output)
PF1 (I/O) / BACK (output)
PF0 (I/O) / BREQ (input) / IRQ2 (input)
Pin functions in modes 4 to 6
Figure 10B.18 Port F Pin Functions