HD6412240 RENESAS [Renesas Technology Corp], HD6412240 Datasheet - Page 313

• Manufacturer Part Number: HD6412240
• Description: Renesas 16-Bit Single-Chip Microcomputer H8S Family / H8S/2200 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

8.12
8.12.1
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, WAIT, BREQO, BREQ, and BACK), the system clock ( ) output pin and
interrupt input pins (IRQ0 to IRQ3).
The interrupt input pins (IRQ0 to IRQ3) are Schmitt-triggered inputs.
Figure 8.24 shows the port F pin configuration.
Note: * Modes 2, 3, 6, and 7 cannot be used in the H8S/2240.
Port F
Port F
Overview
Port F pins
PF
PF
PF
PF
PF
PF
PF
PF
7
6
5
4
3
2
1
0
/
/AS
/RD
/HWR
/LWR/IRQ3
/WAIT/BREQO/IRQ2
/BACK/IRQ1
/BREQ/IRQ0
Figure 8.24 Port F Pin Functions
Pin functions in modes 1, 2, 4, 5, and 6 *
PF
AS (output)
RD (output)
HWR (output)
LWR (output)
PF
PF
PF
Pin functions in modes 3 and 7 *
PF
PF
PF
PF
PF
PF
PF
PF
7
2
1
0
7
6
5
4
3
2
1
0
(input)/ (output)
(I/O)/WAIT (input)/BREQO (output)/IRQ2 (input)
(I/O)/BACK (output)/IRQ1(input)
(I/O)/BREQ (input)/IRQ0 (input)
(input)/ (output)
(I/O)
(I/O)
(I/O)
(I/O)/IRQ3 (input)
(I/O)/IRQ2 (input)
(I/O)/IRQ1 (input)
(I/O)/IRQ0 (input)
Rev.3.00 Mar. 26, 2007 Page 271 of 772
Section 8 I/O Ports
REJ09B0355-0300