Datasheet

LPC15XX All information provided in this document is subject to legal disclaimers. © NXP B.V. 2014. All rights reserved.
Product data sheet Rev. 1 — 19 February 2014 71 of 99
NXP Semiconductors
LPC15xx
32-bit ARM Cortex-M3 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 %.
12.4 I/O pins
[1] Applies to standard port pins and RESET pin.
12.5 I
2
C-bus
Table 17. Dynamic characteristics: Watchdog oscillator
Symbol Parameter Conditions Min Typ
[1]
Max Unit
f
osc(int)
internal oscillator
frequency
-
[2]
-503-kHz
Table 18. 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 19. Dynamic characteristic: I
2
C-bus pins
[1]
T
amb
=  40  C to +105  C; values guaranteed by design.
[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_22 and
PIO0_23
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_22
and PIO0_23
- 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_22 and
PIO0_23
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_22 and
PIO0_23
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_22 and
PIO0_23
0-s