HD6432646 Hitachi, HD6432646 Datasheet - Page 295

• Manufacturer Part Number: HD6432646
• Description: (HD64F264x Series) 16-Bit Microcomputer
• Manufacturer: Hitachi

9.9
9.9.1
Port B is an 8-bit I/O port. Port B also functions as LCD driver output pins (H8S/2646,
H8S/2646R, H8S/2645: SEG16 to SEG9, H8S/2648, H8S/2648R, H8S/2647: SEG32 to SEG9)
and as address bus outputs. The pin functions are determined by the operating mode.
Port B has a built-in MOS input pull-up function that can be controlled by software.
Figure 9-8 shows the port B pin configuration.
Notes: *1 In the H8S/2646, H8S/2646R, and H8S/2645.
Port B
*2 In the H8S/2648, H8S/2648R, and H8S/2647.
Port B
Overview
Port B pins
PB7 / A15 / SEG16
PB6 / A14 / SEG15
PB5 / A13 / SEG14
PB4 / A12 / SEG13
PB3 / A11 / SEG12
PB2 / A10 / SEG11
PB1 / A9 / SEG10
PB0 / A8 / SEG9
Figure 9-8 Port B Pin Functions
*1
*1
*1
*1
*1
*1
*1
*1
/ SEG25
/ SEG32
/ SEG31
/ SEG30
/ SEG29
/ SEG28
/ SEG27
/ SEG26
*2
*2
*2
*2
*2
*2
*2
*2
PB7
PB6
PB5
PB4
PB3
PB2
PB1
PB0
Pin functions in modes 4 to 6
Mode 7 pins
PB7
PB6
PB5
PB4
PB3
PB2
PB1
PB0
(I/O) /
(I/O) /
(I/O) /
(I/O) /
(I/O) /
(I/O) /
(I/O) /
(I/O) /
(I/O) / SEG16
(I/O) / SEG15
(I/O) / SEG14
(I/O) / SEG13
(I/O) / SEG12
(I/O) / SEG11
(I/O) / SEG10
(I/O) / SEG9
A15
A14
A13
A12
A11
A10
A9
A8
(output) / SEG16
(output) / SEG15
(output) / SEG14
(output) / SEG13
(output) / SEG12
(output) / SEG11
(output) / SEG10
(output) / SEG9
*1
*1
*1
*1
*1
*1
*1
*1
(output) / SEG32
(output) / SEG31
(output) / SEG30
(output) / SEG29
(output) / SEG28
(output) / SEG27
(output) / SEG26
(output) / SEG25
*1
*1
*1
*1
*1
*1
*1
*1
(output) / SEG32
(output) / SEG31
(output) / SEG30
(output) / SEG29
(output) / SEG28
(output) / SEG27
(output) / SEG26
(output) / SEG25
*2
*2
*2
*2
*2
*2
*2
*2
(output)
(output)
(output)
(output)
(output)
(output)
(output)
(output)
*2
*2
*2
*2
*2
*2
*2
*2
(output)
(output)
(output)
(output)
(output)
(output)
(output)
(output)
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