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HD6433713 Datasheet(PDF) 138 Page - Renesas Technology Corp

Part # HD6433713
Description  single-chip microcontrollers
PDF  324 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

HD6433713 Datasheet(HTML) 138 Page - Renesas Technology Corp

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7.7.3 Pin Functions
Table 7-21 shows the port 7 pin functions.
Table 7-21 Port 7 Pin Functions
Pin
Pin Functions and Selection Method
P77/FD15 to
After designation of the digit pins to be used, in bits DR3 to DR0 of the VFD
P70/FD8
digit control register (VFDR), bit VFDE in the digit beginning register (DBR) is
set to 1 and VFD controller/driver operation is started. Even while the VFD
controller/driver is operating, it is possible to switch digit pins to general-
purpose ports by writing 0 in the VFLAG bit of VFSR.
VFLAG
0
1
Pin function
Pins P77 to P70 are all
Pins designated by bits
general-purpose I/O pins.
DR3 to DR0 are digit output
pins.* Other pins are for
general I/O.
Note: * When a pin functioning as a digit output pin is read, the value of the
corresponding bit in PDR7 is read.
7.7.4 Pin States
Table 7-22 shows the port 7 pin states in each operating mode.
Table 7-22 Port 7 Pin States
Pins
Reset
Sleep
Standby
Watch
Subactive
Active
P77/FD15 to
High
Previous
High
High
High
Normal
P70/FD8
impedance or state
impedance or impedance or impedance or operation
pulled down
retained
pulled down
pulled down
pulled down
127



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