Datasheet

LPC11E3X All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2014. All rights reserved.
Product data sheet Rev. 2.3 — 11 September 2014 48 of 71
NXP Semiconductors
LPC11E3x
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 +85 C) is 40 %.
[3] See the LPC11Exx user manual.
10.4 I/O pins
[1] Applies to standard port pins and RESET pin.
10.5 I
2
C-bus
[1] See the I
2
C-bus specification UM10204 for details.
Table 13. 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 14. Dynamic characteristics: I/O pins
[1]
T
amb
=  40  C to +85  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 15. Dynamic characteristic: I
2
C-bus pins
[1]
T
amb
=  40  C to +85  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 0 1 MHz
t
f
fall time
[3][4][5][6]
of both SDA and SCL
signals
Standard-mode
-300ns
Fast-mode 20 + 0.1  C
b
300 ns
Fast-mode Plus - 120 ns
t
LOW
LOW period of the
SCL clock
Standard-mode 4.7 - s
Fast-mode 1.3 - s
Fast-mode Plus 0.5 - s
t
HIGH
HIGH period of the
SCL clock
Standard-mode 4.0 - s
Fast-mode 0.6 - s
Fast-mode Plus 0.26 - s
t
HD;DAT
data hold time
[3][7][8]
Standard-mode 0 - s
Fast-mode 0 - s
Fast-mode Plus 0 - s
t
SU;DAT
data set-up time
[9][10]
Standard-mode 250 - ns
Fast-mode 100 - ns
Fast-mode Plus 50 - ns