HD64F2638F20J Datasheet, PDF (343/1512 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2600 Series

H8S/2639, H8S/2638, H8S/2636,
H8S/2630, H8S/2635 Group
Section 9 I/O Ports
9.11 Port F
9.11.1 Overview
Port F is a 6-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, and
LWR), and the system clock (φ) output pin.
Figure 9-21 shows the port F pin configuration.
Port F pins
Pin functions in modes 4 to 6
Port F
PF7/ φ
PF6/ AS/ LCAS
PF5/ RD
PF4/ HWR
PF3/ LWR/ADTRG/IRQ3
PF0/ IRQ2
PF7 (input) / φ (output)
AS (output)
RD (output)
HWR (output)
PF3 (I/O) / LWR (output) / ADTRG (input) / IRQ3 (input)
PF0 (I/O) / IRQ2 (input)
Pin functions in mode 7
PF7 (input) / φ (output)
PF6 (I/O)
PF5 (I/O)
PF4 (I/O)
PF3 (I/O) / ADTRG (input) / IRQ3 (input)
PF0 (I/O) / IRQ2 (input)
Figure 9-21 Port F Pin Functions
REJ09B0103-0800 Rev. 8.00
May 28, 2010
Page 293 of 1458