Hitachi H8S/2646 User Manual

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9.11 Port D
9.11.1 Overview
Port D is an 8-bit I/O port. Port D has a data bus I/O function, and the pin functions change
according to the operating mode. In the H8S/2648, H8S/2648R, H8S/2647, port D pins also
function as LCD driver output pins (SEG16 to SEG9).
Port D has a built-in MOS input pull-up function that can be controlled by software.
Figure 9-10 shows the port D pin configuration.
PD7 / D15 / SEG16
*

PD6 / D14 / SEG15
*

PD5 / D13 / SEG14
*

PD4 / D12 / SEG13
*

PD3 / D11 / SEG12
*

PD2 / D10 / SEG11
*

PD1 / D9 / SEG10
*

PD0 / D8 / SEG9
*

Port D
D15
D14
D13
D12
D11
D10
D9
D8
(I/O) / SEG16
*
(output)
(I/O) / SEG15
*
(output)
(I/O) / SEG14
*
(output)
(I/O) / SEG13
*
(output)
(I/O) / SEG12
*
(output)
(I/O) / SEG11
*
(output)
(I/O) / SEG10
*
(output)
(I/O) / SEG9
*
(output)
Port D pins

Pin functions in modes 4 to 6
PD7
PD6
PD5
PD4
PD3
PD2
PD1
PD0
(I/O) / SEG16
*
(output)
(I/O) / SEG15
*
(output)
(I/O) / SEG14
*
(output)
(I/O) / SEG13
*
(output)
(I/O) / SEG12
*
(output)
(I/O) / SEG11
*
(output)
(I/O) / SEG10
*
(output)
(I/O) / SEG9
*
(output)
Pin functions in mode 7
Note: * In the H8S/2648, H8S/2648R, and H8S/2647.
Figure 9-10 Port D Pin Functions

Hitachi H8S/2646 Specifications

General

Brand	Hitachi
Model	H8S/2646
Category	Desktop
Language	English