Datasheet

LPC84x All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2018. All rights reserved.
Product data sheet Rev. 1.7 — 27 February 2018 11 of 97
NXP Semiconductors
LPC84x
32-bit Arm Cortex-M0+ microcontroller
PIO0_10 and PIO_11 are high current source pins while PIO0_2, PIO0_3, PIO0_12, and
PIO0_16 are high drive output pins.
The JTAG functions TDO, TDI, TCK, TMS, and TRST
are selected on pins PIO0_0 to
PIO0_4 by hardware when the part is in boundary scan mode.
Table 4. Pin description
Symbol
LQFP64 LQFP48 HVQFN48 HVQFN33
Reset
state
[1]
Type Description
PIO0_0/ACMP_I1/
TDO
48 36 36 24
[2]
I; PU IO PIO0_0 — General-purpose port 0 input/output 0.
In boundary scan mode: TDO (Test Data Out).
A ACMP_I1 — Analog comparator input 1.
PIO0_1/ACMP_I2/
CLKIN/TDI
32 24 24 16
[2]
I; PU IO PIO0_1 — General-purpose port 0 input/output 1.
In boundary scan mode: TDI (Test Data In).
A ACMP_I2 — Analog comparator input 2.
I CLKIN — External clock input.
SWDIO/PIO0_2/
TMS
14 10 10 7
[4]
I; PU IO SWDIO — Serial Wire Debug I/O. SWDIO is
enabled by default on this pin. In boundary scan
mode: TMS (Test Mode Select).
I/O PIO0_2 — General-purpose port 0 input/output 2.
SWCLK/PIO0_3/
TCK
12 8 8 6
[4]
I; PU I SWCLK — Serial Wire Clock. SWCLK is enabled by
default on this pin.
In boundary scan mode: TCK (Test Clock).
IO PIO0_3 — General-purpose port 0 input/output 3.
PIO0_4/ADC_11/
TRSTN/WAKEUP
6664
[3]
I; PU IO PIO0_4 — General-purpose port 0 input/output 4.
In boundary scan mode: TRST (Test Reset).
This pin triggers a wake-up from deep power-down
mode. If the part must wake up from deep
power-down mode via the WAKEUP pin, do not
assign any movable function to this pin and must be
externally pulled HIGH before entering deep
power-down mode. A LOW-going pulse as short as
50 ns causes the chip to exit deep power-down
mode and wakes up the part. The WAKEUP
pin can
be left unconnected or be used as a GPIO or for any
movable function if an external WAKEUP
function is
not needed.
A ADC_11 — ADC input 11.