Datasheet

LPC12D27 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2011. All rights reserved.
Product data sheet Rev. 1 — 20 September 2011 12 of 46
NXP Semiconductors
LPC12D27
32-bit ARM Cortex-M0 microcontroller
R/PIO1_1/AD3 80
[5]
no I; PU I R — Reserved. Configure for an alternate function in the
IOCONFIG block.
I/O PIO1_1 — General purpose digital input/output pin.
I AD3 — A/D converter, input 3.
PIO1_2/SWDIO/AD4 81
[5]
no I; PU I/O PIO1_2 — General purpose digital input/output pin.
I/O SWDIO — Serial wire debug input/output, alternate location.
I AD4 — A/D converter, input 4.
PIO1_3/AD5/WAKEUP 82
[6]
no I; PU I/O PIO1_3 — General purpose digital input/output pin.
I AD5 — A/D converter, input 5.
I WAKEUP — Deep power-down mode wake-up pin.
PIO1_4/AD6 83
[5]
no I; PU I/O PIO1_4 — General purpose digital input/output pin.
I AD6 — A/D converter, input 6.
PIO1_5/AD7/
CT16B1_CAP0/
CT16B1_MAT0
84
[5]
no I; PU I/O PIO1_5 — General purpose digital input/output pin.
I AD7 — A/D converter, input 7.
I CT16B1_CAP0 — Capture input, channel 0 for 16-bit timer 1.
O CT16B1_MAT0 — Match output, channel 0 for 16-bit timer 1.
PIO1_6/CT16B1_CAP1/
CT16B1_MAT1
85
[2]
no I; PU I/O PIO1_6 — General purpose digital input/output pin.
I CT16B1_CAP1 — Capture input, channel 1 for 16-bit timer 1.
O CT16B1_MAT1 — Match output, channel 1 for 16-bit timer 1.
PIO2_0 I/O Port 2 — Port 2 is a 32-bit I/O port with individual direction and
function controls for each bit. The operation of port 2 pins
depends on the function selected through the IOCONFIG register
block. Pins PIO2_1 through PIO2_31 are not available.
PIO2_0/CT16B0_CAP0/
CT16B0_MAT0
16
[2]
no I; PU I/O PIO2_0 — General purpose digital input/output pin.
I CT16B0_CAP0 — Capture input, channel 0 for 16-bit timer 0.
O CT16B0_MAT0 — Match output, channel 0 for 16-bit timer 0.
RTCXIN 89 - - - Input to the 32 kHz oscillator circuit.
RTCXOUT 88 - - - Output from the 32 kHz oscillator amplifier.
XTALIN 92 - - - Input to the system oscillator circuit and internal clock generator
circuits.
XTALOUT 93 - - - Output from the system oscillator amplifier.
VREF_CMP 94 - - - Reference voltage for comparator.
V
DD(IO)
90 - - - Input/output supply voltage.
V
DD(3V3)
87 - - - 3.3 V supply voltage to the internal regulator and the ADC. Also
used as the
ADC reference voltage.
V
SSIO
91 - - - Ground.
V
SS
86 - - - Ground.
LCD display pins
S0 46 - V
LCD
[8]
O LCD segment output.
S1 47 - V
LCD
[8]
O LCD segment output.
Table 3. LPC12D27 LQFP100 pin description
…continued
Symbol Pin Start
logic
input
Reset
state
[1]
Type Description