Datasheet

LPC4350_30_20_10 All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2014. All rights reserved.
Product data sheet Rev. 4.2 — 18 August 2014 108 of 155
NXP Semiconductors
LPC4350/30/20/10
32-bit ARM Cortex-M4/M0 microcontroller
11.6 I/O pins
[1] Simulated data.
[2] Simulated using 10 cm of 50 Ω PCB trace with 5 pF receiver input. Rise and fall times measured between
80 % and 20 % of the full output signal level.
[3] The slew rate is configured in the system control block in the SFSP registers using the EHS bit. See the
LPC43xx user manual.
[4] C
L
= 20 pF. Rise and fall times measured between 90 % and 10 % of the full input signal level.
[5] The drive modes are configured in the system control block in the SFSP registers using the EHD bit. See
the LPC43xx user manual.
Table 18. Dynamic characteristic: I/O pins
[1]
T
amb
=  40  C to +85  C; 2.7 V  V
DD(IO)
 3.6 V.
Symbol Parameter Conditions Min Typ Max Unit
Standard I/O pins - normal drive strength
t
r
rise time pin configured as output; EHS = 1
[2][3]
1.0 - 2.5 ns
t
f
fall time pin configured as output; EHS = 1
[2][3]
0.9 - 2.5 ns
t
r
rise time pin configured as output; EHS = 0
[2][3]
1.9 - 4.3 ns
t
f
fall time pin configured as output; EHS = 0
[2][3]
1.9 - 4.0 ns
t
r
rise time pin configured as input
[4]
0.3 - 1.3 ns
t
f
fall time pin configured as input
[4]
0.2 - 1.2 ns
I/O pins - high drive strength
t
r
rise time pin configured as output; standard
drive mode (EHD = 0x0)
[2][5]
4.3 - 7.9 ns
t
f
fall time pin configured as output; standard
drive mode (EHD = 0x0)
[2][5]
4.7 - 8.7 ns
t
r
rise time pin configured as output; medium
drive mode (EHD = 0x1)
[2][5]
3.2 - 5.7 ns
t
f
fall time pin configured as output; medium
drive mode (EHD = 0x1)
[2][5]
3.2 - 5.5 ns
t
r
rise time pin configured as output; high drive
mode (EHD = 0x2)
[2][5]
2.9 - 4.9 ns
t
f
fall time pin configured as output; high drive
mode (EHD = 0x2)
[2][5]
2.5 - 3.9 ns
t
r
rise time pin configured as output; ultra-high
drive mode (EHD = 0x3)
[2][5]
2.8 - 4.7 ns
t
f
fall time pin configured as output; ultra-high
drive mode (EHD = 0x3)
[2][5]
2.4 - 3.4 ns
t
r
rise time pin configured as input
[4]
0.3 - 1.3 ns
t
f
fall time pin configured as input
[4]
0.2 - 1.2 ns
I/O pins - high-speed
t
r
rise time pin configured as output; EHS = 1
[2][3]
350 - 670 ps
t
f
fall time pin configured as output; EHS = 1
[2][3]
450 - 730 ps
t
r
rise time pin configured as output; EHS = 0
[2][3]
1.0 - 1.9 ns
t
f
fall time pin configured as output; EHS = 0
[2][3]
1.0 - 2.0 ns
t
r
rise time pin configured as input
[4]
0.3 - 1.3 ns
t
f
fall time pin configured as input
[4]
0.2 - 1.2 ns