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μ
PD720231
2. Pin Function
This section describes each pin's function.
2.1
Power supply and regulator
Pin Name
VDD33
25
VDDGPIO
5, 39
AVDD33
17
VDD10
7, 18, 21, 24, 26, 29, 32, 35, 40
V50IN
12
VDD33OUT
11
AVDD33IN1
45
Note
AVDD33IN2
46
Note
LX1
44
FB
47
GND
Die PAD
Note It is mandatory to put ceramic capacitors (22
Common impedance coupling between AVDD25IN1 and AVDD25IN2 must be avoided.
2.2
Analog Signal
Pin Name
Pin No.
RREF
16
2.3
VBUS
Pin Name
Pin No.
VBUSM
10
R19UH0094EJ0100 Rev 1.00
Mar 1, 2013
Table 2-1. Power Supply
Pin No.
Buffer Type
Regulator
Regulator
Regulator
Regulator
Regulator
Regulator
Table 2-2. Analog Signal
Direction Buffer Type
−
USB2
Table 2-3. VBUS and Regulator
Direction Buffer Type
I
5 V
tolerant
buffer
Power
+3.3 V power supply
+3.3 V power supply for GPIOs, except for
Power
GPIO5 and GPIO6/ACT.
Power
+3.3 V power supply for USB analog circuit
Power
+1.0 V power supply
+5 V input for internal LDO.
+3.3 V output from internal LDO.
+3.3 V power supply for regulator analog circuit
+3.3 V power supply for regulator analog circuit
1.0 V output from the on-chip regulator
Feedback for regulator.
−
Connect to ground for digital circuit
μ
F is recommended) on AVDD25IN1 and AVDD25IN2.
Active
Level
This pin must be connected to GND via a 1.6k-
−
ohm resistor with 1 % precision.
Active
Level
High
VBUS detection.
2. Pin Function
Function
Function
Function
Page 5 of 30
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