CHAPTER 2 PIN FUNCTIONS
User’s Manual U13850EJ4V0UM
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(21) BV
SS
(Ground for Bus Interface)
This is the ground pin for the bus interface.
(22) EV
DD
(Power Supply for Port)
This is the positive power supply pin for I/O ports and alternate-function pins (except for the alternate-function
ports of the bus interface).
(23) EV
SS
(Ground for Port)
This is the ground pin for I/O ports and alternate-function pins (except for the alternate-function ports of the bus
interface).
(24) V
DD
(Power Supply)
These are the positive power supply pins. All V
DD
pins should be connected to a positive power source.
(25) V
SS
(Ground)
These are the ground pins. All V
SS
pins should be grounded.
(26) V
PP
(Programming Power Supply)
This is the positive power supply pin used for flash memory programming mode.
This pin is used in the
µ
PD70F303wA and 70F303wAY. Connect to V
SS
in normal operating mode.
(27) IC (Internally Connected)
This is an internally connected pin used in the
µ
PD70303xA and 70303xAY.
Connect directly to V
SS
in normal operating mode.