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UM10503
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© NXP B.V. 2015. All rights reserved.
User manual
Rev. 2.1 — 10 December 2015
347 of 1441
NXP Semiconductors
UM10503
Chapter 16: LPC43xx/LPC43Sxx Pin configuration
ADC pins
ADCHS_0
E3
A2
I; IA
I
12-bit high-speed ADC input channel 0.
ADCHS_1
C3
A1
I; IA
I
12-bit high-speed ADC input channel 1.
ADCHS_2
A4
B3
I; IA
I
12-bit high-speed ADC input channel 2.
ADCHS_3
A5
-
I; IA
I
12-bit high-speed ADC input channel 3.
ADCHS_4
C6
-
I; IA
I
12-bit high-speed ADC input channel 4.
ADCHS_5
B3
-
I; IA
I
12-bit high-speed ADC input channel 5.
ADCHS_NEG
B5
A3
I; IA
I/O
12-bit high-speed ADC reference voltage output or negative differential
input.
ADC0_7
C5
-
I; IA
I
10-bit ADC0 input channel 7.
RTC
RTC_ALARM
A11
C3
-
O
RTC controlled output.
RTCX1
A8
A5
-
I
Input to the RTC 32 kHz ultra-low power oscillator circuit.
RTCX2
B8
B5
-
O
Output from the RTC 32 kHz ultra-low power oscillator circuit.
Crystal oscillator pins
XTAL1
D1
B1
-
I
Input to the oscillator circuit and internal clock generator circuits.
XTAL2
E1
C1
-
O
Output from the oscillator amplifier.
Power and ground pins
USB0_VDDA
3V3_DRIVER
F3
D1
-
-
Separate analog 3.3 V power supply for driver.
USB0
_VDDA3V3
G3
D2
-
-
USB 3.3 V separate power supply voltage.
USB0_VSSA
_TERM
H3
D3
-
-
Dedicated analog ground for clean reference for termination resistors.
USB0_VSSA
_REF
G1
F2
-
-
Dedicated clean analog ground for generation of reference currents and
voltages.
VDDA
B4
B2
-
-
Analog power supply and 10-bit ADC reference voltage.
VBAT
B10
C5
-
-
RTC power supply: 3.3 V on this pin supplies power to the RTC.
VDDREG
F10,
F9,
L8,
L7
E4,
E5,
F4
-
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
E8
-
-
-
OTP programming voltage.
Table 186. LPC4370/LPC43S70 Pin description
…continued
LCD is not available on all parts.
Symbol
LB
GA25
6
TFBGA100
R
e
se
t st
ate
[1
]
Ty
p
e
Description