Datasheet

LPC82x All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2014. All rights reserved.
Product data sheet Rev. 1 — 1 October 2014 51 of 81
NXP Semiconductors
LPC82x
32-bit ARM Cortex-M0+ microcontroller
[1] Parameters are valid over operating temperature range unless otherwise specified.
[2] Typical ratings are not guaranteed. The values listed are for room temperature (25 C), nominal supply
voltages.
12.3 Internal oscillators
[1] Parameters are valid over operating temperature range unless otherwise specified.
[2] Typical ratings are not guaranteed. The values listed are for room temperature (25 C), nominal supply
voltages.
Table 12. Dynamic characteristic: external clock (XTALIN input)
T
amb
=  40  C to +105  C; V
DD
over specified ranges.
[1]
Symbol Parameter Min Typ
[2]
Max Unit
f
osc
oscillator frequency 1 - 25 MHz
T
cy(clk)
clock cycle time 40 - 1000 ns
t
CHCX
clock HIGH time T
cy(clk)
 0.4 - - ns
t
CLCX
clock LOW time T
cy(clk)
 0.4 - - ns
t
CLCH
clock rise time - - 5 ns
t
CHCL
clock fall time - - 5 ns
Fig 31. External clock timing (with an amplitude of at least V
i(RMS)
= 200 mV)
W
&+&/
W
&/&;
W
&+&;
7
F\FON
W
&/&+
W
&+&/
W
&/&;
W
&+&;
7
F\FON
W
&/&+
W
&+&/
W
&/&;
W
&+&;
7
F\FON
W
&/&+
W
&+&/
W
&/&;
W
&+&;
7
F\FON
W
&/&+
DDD
Table 13. Dynamic characteristics: IRC
T
amb
=  40  C to +105  C; 2.7 V  V
DD
 3.6 V
[1]
.
Symbol Parameter Conditions Min Typ
[2]
Max Unit
f
osc(RC)
internal RC
oscillator frequency
- 11.82 12 12.18 MHz