MB95710M Series
MB95770M Series
Document Number: 002-09307 Rev. *D Page 72 of 172
18.7 Port 9
Port 9 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”.
18.7.1 Port 9 configuration
Port 9 is made up of the following elements.
• General-purpose I/O pins/peripheral function I/O pins
• Port 9 data register (PDR9)
• Port 9 direction register (DDR9)
18.7.2 Block diagrams of port 9
• P90/V4 pin
This pin has the following peripheral function:
• LCD drive power supply pin (V4)
• P91/V3 pin
This pin has the following peripheral function:
• LCD drive power supply pin (V3)
• P92/V2 pin
This pin has the following peripheral function:
• LCD drive power supply pin (V2)
• P93/V1 pin
This pin has the following peripheral function:
• LCD drive power supply pin (V1)
• P94/V0 pin
This pin has the following peripheral function:
• LCD drive power supply pin (V0)
• Block diagram of P90/V4, P91/V3, P92/V2, P93/V1 and P94/V0
PDR9
Pin
PDR9 read
PDR9 write
Executing bit manipulation instruction
DDR9 read
DDR9 write
DDR9
0
1
Stop mode, watch mode (SPL = 1)
LCD power supply
LCD power supply enable
Internal bus
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