Renesas mPD720231, Руководство пользователя

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