LPC435X datasheet(59/162 Pages) NXP

59 / 162 page

LPC435X_3X_2X_1X

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Product data sheet

Rev. 5.4 — 10 January 2020

59 of 162

NXP Semiconductors

LPC435x/3x/2x/1x

32-bit ARM Cortex-M4/M0 microcontroller

XTAL1

[8]

Input to the oscillator circuit and internal clock generator

circuits.

XTAL2

[8]

Output from the oscillator amplifier.

Power and ground pins

USB0_VDDA

3V3_DRIVER

Separate analog 3.3 V power supply for driver.

USB0

_VDDA3V3

USB 3.3 V separate power supply voltage.

USB0_VSSA

_TERM

Dedicated analog ground for clean reference for termination

resistors.

USB0_VSSA

_REF

Dedicated clean analog ground for generation of reference

currents and voltages.

VDDA

198

137

Analog power supply and ADC reference voltage.

VBAT

B10

184

127

RTC power supply: 3.3 V on this pin supplies power to the

RTC.

VDDREG

F10,

F9,

L8,

E4,

E5,

135,

188,

195,

82,

94,

131,

59,

Main regulator power supply. Tie the VDDREG and VDDIO

pins to a common power supply to ensure the same ramp-up

time for both supply voltages.

VPP

[12]

OTP programming voltage.

VDDIO

D7,

E12,

F7,

F8,

G10,

H10,

J6,

J7,

K7,

L9,

L10,

N7,

N13

F10,

52,

57,

102,

110,

155,

160,

202

36,

41,

71,

77,

107,

111,

141

[12]

I/O power supply. Tie the VDDREG and VDDIO pins to a

common power supply to ensure the same ramp-up time for

both supply voltages.

Table 3.

Pin description …continued

Pin name

Description

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