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 61 of 97
NXP Semiconductors
LPC84x
32-bit Arm Cortex-M0+ microcontroller
[1] Typical ratings are not guaranteed. The values listed are at nominal supply voltages.
[2] The typical frequency spread over processing and temperature (T
amb
= 40 C to +105 C) is 40 %.
[3] See the LPC84x user manual.
12.3 I/O pins
[1] Applies to standard port pins and RESET pin.
12.4 WKTCLKIN pin (wake-up clock input)
[1] Assuming a square-wave input clock.
12.5 SCTimer/PWM output timing
Table 18. Dynamic characteristics: Watchdog oscillator
Symbol Parameter Conditions Min Typ
[1]
Max Unit
f
osc(int)
internal oscillator
frequency
DIVSEL = 0x1F, FREQSEL = 0x1
in the WDTOSCCTRL register;
[2][3]
-9.4-kHz
DIVSEL = 0x00, FREQSEL = 0xF
in the WDTOSCCTRL register
[2][3]
- 2300 - kHz
Table 19. Dynamic characteristics: I/O pins
[1]
T
amb
=  40  C to +105  C; 3.0 V  V
DD
 3.6 V.
Symbol Parameter Conditions Min Typ Max Unit
t
r
rise time pin configured as output 3.0 - 5.0 ns
t
f
fall time pin configured as output 2.5 - 5.0 ns
Table 20. Dynamic characteristics: WKTCLKIN pin
T
amb
=  40  C to +105  C; 1.8 V  V
DD
 3.6 V.
Symbol Parameter Conditions Min Max Unit
f
clk
clock frequency deep power-down mode and
power-down mode
[1]
-1MHz
deep-sleep, sleep, and active mode
[1]
-10MHz
t
CHCX
clock HIGH time - 50 - ns
t
CLCX
clock LOW time - 50 - ns
Table 21. SCTimer/PWM output dynamic characteristics
T
amb
=  40  C to 105  C; 1.8 V <= V
DD
<= 3.6 V; C
L
= 10 pF. Simulated skew (over process, voltage,
and temperature) of any two SCT output signals routed to standard I/O pins; sampled at the 50 %
level of the falling or rising edge; values guaranteed by design.
Symbol Parameter Conditions Min Typ Max Unit
t
sk(o)
output skew time - - - 6 ns