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 48 of 76
NXP Semiconductors
LPC81xM
32-bit ARM Cortex-M0+ microcontroller
12.4 I/O pins
[1] Applies to standard port pins and RESET pin.
12.5 I
2
C-bus
[1] See the I
2
C-bus specification UM10204 for details.
[2] Parameters are valid over operating temperature range unless otherwise specified.
Table 15. 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 16. Dynamic characteristic: I
2
C-bus pins
[1]
T
amb
=  40  C to +105  C.
[2]
Symbol Parameter Conditions Min Max Unit
f
SCL
SCL clock
frequency
Standard-mode 0 100 kHz
Fast-mode 0 400 kHz
Fast-mode Plus; on
pins PIO0_10 and
PIO0_11
01MHz
t
f
fall time
[4][5][6][7]
of both SDA and
SCL signals
Standard-mode
- 300 ns
Fast-mode 20 + 0.1  C
b
300 ns
Fast-mode Plus;
on pins PIO0_10
and PIO0_11
- 120 ns
t
LOW
LOW period of
the SCL clock
Standard-mode 4.7 - s
Fast-mode 1.3 - s
Fast-mode Plus; on
pins PIO0_10 and
PIO0_11
0.5 - s
t
HIGH
HIGH period of
the SCL clock
Standard-mode 4.0 - s
Fast-mode 0.6 - s
Fast-mode Plus; on
pins PIO0_10 and
PIO0_11
0.26 - s
t
HD;DAT
data hold time
[3][4][8]
Standard-mode 0 - s
Fast-mode 0 - s
Fast-mode Plus; on
pins PIO0_10 and
PIO0_11
0-s
t
SU;DAT
data set-up
time
[9][10]
Standard-mode 250 - ns
Fast-mode 100 - ns
Fast-mode Plus; on
pins PIO0_10 and
PIO0_11
50 - ns