MB95710M Series
MB95770M Series
Document Number: 002-09307 Rev. *D
Page 77 of 172
18.9 Port B
Port B is a general-purpose I/O port. This section focuses on its functions as a general-purpose I/O port. For details of
peripheral functions, refer to their respective chapters in “New 8FX MB95710M/770M Series Hardware Manual”.
18.9.1 Port B configuration
Port B is made up of the following elements.
• General-purpose I/O pins/peripheral function I/O pins
• Port B data register (PDRB)
• Port B direction register (DDRB)
18.9.2 Block diagrams of port B
• PB0/SEG00 pin
This pin has the following peripheral function:
• LCDC SEG00 output pin (SEG00)
• PB1/SEG01 pin
This pin has the following peripheral function:
• LCDC SEG01 output pin (SEG01)
• PB2/SEG37 pin
This pin has the following peripheral function:
• LCDC SEG37 output pin (SEG37)
• PB3/SEG38 pin
This pin has the following peripheral function:
• LCDC SEG38 output pin (SEG38)
• PB4/SEG39 pin
This pin has the following peripheral function:
• LCDC SEG39 output pin (SEG39)
• Block diagram of PB0/SEG00, PB1/SEG01, PB2/SEG37, PB3/SEG38 and PB4/SEG39
PDRB
Pin
PDRB read
PDRB write
Executing bit manipulation instruction
DDRB read
DDRB write
DDRB
0
1
Stop mode, watch mode (SPL = 1)
LCD output
Inter
nal b
u
s
LCD output enable