Datasheet

LPC81XM All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2014. All rights reserved.
Product data sheet Rev. 4.3 — 22 April 2014 56 of 76
NXP Semiconductors
LPC81xM
32-bit ARM Cortex-M0+ microcontroller
[1] C
L
= 10 pF; results from measurements on silicon samples over process corners and over the full temperature range T
amb
= 40 C to
+105 C. Typical data are for T
amb
= 27 C.
[2] Input hysteresis is relative to the reference input channel and is software programmable to three levels.
[1] Maximum values are derived from worst case simulation (V
DD
= 2.6 V; T
amb
= 105 C; slow process
models).
[2] Settling time applies to switching between comparator channels.
t
PD
propagation delay HIGH to LOW; V
DD
= 3.0 V;
V
IC
= 0.1 V; 50 mV overdrive input
[1]
- 109 121
ns
V
IC
= 0.1 V; rail-to-rail input
[1]
- 155 164 ns
V
IC
= 1.5 V; 50 mV overdrive input
[1]
-95 105ns
V
IC
= 1.5 V; rail-to-rail input
[1]
- 101 108 ns
V
IC
= 2.9 V; 50 mV overdrive input
[1]
- 122 129 ns
V
IC
= 2.9 V; rail-to-rail input
[1]
-74 82 ns
t
PD
propagation delay LOW to HIGH; V
DD
= 3.0 V;
V
IC
= 0.1 V; 50 mV overdrive input
[1]
- 246 260
ns
V
IC
= 0.1 V; rail-to-rail input
[1]
-57 59 ns
V
IC
= 1.5 V; 50 mV overdrive input
[1]
- 218 ns
V
IC
= 1.5 V; rail-to-rail input
[1]
- 146 155 ns
V
IC
= 2.9 V; 50 mV overdrive input
[1]
- 184 206 ns
V
IC
= 2.9 V; rail-to-rail input
[1]
- 250 286 ns
V
hys
hysteresis voltage positive hysteresis; V
DD
= 3.0 V;
V
IC
= 1.5 V
[2]
- 6, 11, 21 - mV
V
hys
hysteresis voltage negative hysteresis; V
DD
= 3.0 V;
V
IC
= 1.5 V
[2]
[2]
- 4, 9, 19 - mV
R
lad
ladder resistance - - 1.034 - M
Table 21. Comparator characteristics
…continued
V
DD
= 3.0 V and T
amb
= 27  C unless noted otherwise.
Symbol Parameter Conditions Min Typ Max Unit
Table 22. Comparator voltage ladder dynamic characteristics
Symbol Parameter Conditions Min Typ Max Unit
t
s(pu)
power-up settling
time
to 99% of voltage
ladder output
value
[1]
-- 30 s
t
s(sw)
switching settling
time
to 99% of voltage
ladder output
value
[1]
[2]
-- 15 s