Datasheet
LPC185X_3X_2X_1X All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2014. All rights reserved.
Product data sheet Rev. 4.1 — 6 May 2014 57 of 148
NXP Semiconductors
LPC185x/3x/2x/1x
32-bit ARM Cortex-M3 microcontroller
WAKEUP2 C9 - - -
[11]
I; IA I External wake-up input; can raise an interrupt and can cause
wake-up from any of the low-power modes. A pulse with a
duration of at least 45 ns wakes up the part.
Input 2 of the event monitor.
WAKEUP3 D8 - - -
[11]
I; IA I External wake-up input; can raise an interrupt and can cause
wake-up from any of the low-power modes. A pulse with a
duration of at least 45 ns wakes up the part.
ADC pins
ADC0_0/
ADC1_0/DAC
E3 A2 6 8
[8]
AI;
IA
I ADC input channel 0. Shared between 10-bit ADC0/1 and
DAC.
ADC0_1/
ADC1_1
C3 A1 2 4
[8]
AI;
IA
I ADC input channel 1. Shared between 10-bit ADC0/1.
ADC0_2/
ADC1_2
A4 B3 143 206
[8]
AI;
IA
I ADC input channel 2. Shared between 10-bit ADC0/1.
ADC0_3/
ADC1_3
B5 A3 139 200
[8]
AI;
IA
I ADC input channel 3. Shared between 10-bit ADC0/1.
ADC0_4/
ADC1_4
C6 - 138 199
[8]
AI;
IA
I ADC input channel 4. Shared between 10-bit ADC0/1.
ADC0_5/
ADC1_5
B3 - 144 208
[8]
AI;
IA
I ADC input channel 5. Shared between 10-bit ADC0/1.
ADC0_6/
ADC1_6
A5 - 142 204
[8]
AI;
IA
I ADC input channel 6. Shared between 10-bit ADC0/1.
ADC0_7/
ADC1_7
C5 - 136 197
[8]
AI;
IA
I ADC input channel 7. Shared between 10-bit ADC0/1.
RTC pins
RTC_ALARM A11 C3 129 186
[11]
- O RTC controlled output.
RTCX1 A8 A5 125 182
[8]
- I Input to the RTC 32 kHz ultra-low power oscillator circuit.
RTCX2 B8 B5 126 183
[8]
- O Output from the RTC 32 kHz ultra-low power oscillator circuit.
SAMPLE
B9 - - -
[11]
O O Event monitor sample output.
Crystal oscillator pins
XTAL1 D1 B1 12 18
[8]
- I Input to the oscillator circuit and internal clock generator
circuits.
XTAL2 E1 C1 13 19
[8]
- O Output from the oscillator amplifier.
Power and ground pins
USB0_VDDA
3V3_DRIVER
F3 D1 16 24 - - Separate analog 3.3 V power supply for driver.
USB0
_VDDA3V3
G3 D2 17 25 - - USB 3.3 V separate power supply voltage.
USB0_VSSA
_TERM
H3 D3 19 27 - - Dedicated analog ground for clean reference for termination
resistors.
USB0_VSSA
_REF
G1 F2 23 31 - - Dedicated clean analog ground for generation of reference
currents and voltages.
VDDA B4 B2 137 198 - - Analog power supply and ADC reference voltage.
Table 3. Pin description
…continued
Pin name
LBGA256
TFBGA100
LQFP144
LQFP208
Reset state
[1]
Type
Description