HD6432646 Hitachi, HD6432646 Datasheet - Page 669

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

Bits 3 to 0—Segment Driver Select 3 to 0 (SGS3 to SGS0): Bits 3 to 0 select the segment
drivers to be used.
Bit 3:
SGS3
0
1
Note: When using external expansion, set a value of 0000 for SGS3 to SGS0. When the setting of
H8S/2646, H8S/2646R, H8S/2645
Bit 2:
SGS2
0
1
*
SGS3 to SGS0 is 0000, COM4 to COM1 also function as ports.
Bit 1:
SGS1
0
1
0
1
*
Bit 0:
SGS0
0
1
0
1
0
1
*
*
SEG24 to
SEG17
Port
SEG
SEG
SEG
SEG
SEG
Setting
prohibited
Setting
prohibited
SEG16 to
SEG13
Port
Port
SEG
SEG
SEG
SEG
Setting
prohibited
Setting
prohibited
Function of Pins SEG24 to SEG1
SEG12 to
SEG9
Port
Port
Port
SEG
SEG
SEG
Setting
prohibited
Setting
prohibited
SEG8 to
SEG5
Port
Port
Port
Port
SEG
SEG
Setting
prohibited
Setting
prohibited
SEG4 to
SEG1
Port
Port
Port
Port
Port
SEG
Setting
prohibited
Setting
prohibited
Notes
Initial value (external
expansion enabled)
External expansion
not possible
*: Don’t care
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