Renesas H8S/2319 series Hardware Manual page 248

Renesas 16-bit single-chip microcomputer
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Port
Description
Port E • 8-bit I/O port
• Built-in MOS
input pull-up
Port F • 8-bit I/O port
• Schmitt-
triggered input
(IRQ3 to IRQ0)
Rev. 5.00, 12/03, page 218 of 1088
Pins
PE7/D7 to PE0/D0
PF7/φ
PF6/AS
PF5/RD
PF4/HWR
PF3/LWR/IRQ3
PF2/WAIT/IRQ2/BREQO When WAITE = 0, BRLE = 0, BREQOE =
PF1/BACK/IRQ1/CS5
PF0/BREQ/IRQ0/CS4
Mode
Mode
4
5
In 8-bit bus mode: I/O port
In 16-bit bus mode: data bus input/output
When DDR = 0: input port
When DDR = 1 (after reset):
φ output
When ASOD = 1: I/O port
When ASOD = 0: AS output
RD, HWR output
In 8-bit bus mode: When LWROD = 1, I/O
port
In 16-bit bus mode: LWR output also
functioning as interrupt input pin (IRQ3)
0 (after reset): I/O port also functioning as
interrupt input pin (IRQ2)
When WAITE = 1: WAIT input also
functioning as interrupt input pin (IRQ2)
When WAITE = 0, BRLE = 1, BREQOE =
1: BREQO output also functioning as
interrupt input pin (IRQ2)
When BRLE = 0 (after reset): I/O port also
functioning as interrupt input pins (IRQ1,
IRQ0)
When CS25E = 1, PF1CS5S = 1, and
DDR = 1: Also functions as CS5 output
When CS25E = 1, PF0CS4S = 1, and
DDR = 1: Also functions as CS4 output
When BRLE = 1: BREQ input, BACK
output also functioning as interrupt input
pins (IRQ1, IRQ0)
Mode
Mode
6 *
1
7 *
1
I/O port
When DDR =
0 (after
reset): input
port
When DDR =
1: φ output
I/O port
I/O port also
functioning
as interrupt
input pins
(IRQ3 to
IRQ0)

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