Output Buffer Control; Port 1 - Renesas H8SX/1520 Series Hardware Manual

Section 8 I/O Ports
8.2

Output Buffer Control

This section describes the output priority of each pin.
The name of each peripheral module pin is followed by "_OE". This (for example: MIOCA4_OE)
indicates whether the output of the corresponding function is valid (1) or if another setting is
specified (0). Table 8.4 lists each port output signal's valid setting. For details on the
corresponding output signals, see the register description of each peripheral module. If the name
of each peripheral module pin is followed by A or B, the pin function can be modified by the port
function control register (PFCR). For details, see section 8.3.3, Port Function Control Register B
(PFCRB).
8.2.1

Port 1

(1)
P17/ADTRG1/IRQ7
The pin function is switched as shown below according to the P17DDR bit setting.
Module Name
I/O port
(2)
P16/SCK3/IRQ6
The pin function is switched as shown below according to the combination of the SCI_3 and
P16DDR bit settings.
Module Name
SCI_3
I/O port
Rev. 3.00 Mar. 14, 2006 Page 216 of 804
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Pin Function
P17 output
P17 input (initial setting) 0
Pin Function
SCK3 output
P16 output
P16 input (initial setting) 0
Setting
I/O Port
P17DDR
1
Setting
SCI_3
SCK3_OE
1
0
I/O Port
P16DDR

1
0