LPC1777FBD208 NXP Semiconductors, LPC1777FBD208 Datasheet - Page 86
LPC1777FBD208
Manufacturer Part Number
LPC1777FBD208
Description
The LPC1777 is a Cortex-M3 microcontroller for embedded applications featuring a high level of integration and low power consumption at frequencies of 120 MHz
Manufacturer
NXP Semiconductors
Datasheet
1.LPC1774FBD144.pdf
(120 pages)
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LPC178X_7X
Objective data sheet
11.3 External clock
11.4 Internal oscillators
Table 21.
T
[1]
[2]
Table 22.
T
[1]
[2]
Symbol
f
f
Symbol
f
T
t
t
t
t
osc(RC)
i(RTC)
osc
CHCX
CLCX
CLCH
CHCL
amb
amb
Fig 19. External clock timing (with an amplitude of at least V
cy(clk)
Parameters are valid over operating temperature range unless otherwise specified.
Typical ratings are not guaranteed. The values listed are at room temperature (25 C), nominal supply
voltages.
Parameters are valid over operating temperature range unless otherwise specified.
Typical ratings are not guaranteed. The values listed are at room temperature (25 C), nominal supply
voltages.
=
=
40
40
Dynamic characteristic: external clock (see
Dynamic characteristic: internal oscillators
C to +85
C to +85
Parameter
internal RC oscillator
frequency
RTC input frequency
Parameter
oscillator frequency
clock cycle time
clock HIGH time
clock LOW time
clock rise time
clock fall time
All information provided in this document is subject to legal disclaimers.
C; V
C; 2.7 V
Rev. 3 — 27 December 2011
DD(3V3)
V
over specified ranges.
DD(3V3)
t
CHCL
3.6 V.
Conditions
Conditions
-
-
t
CLCX
[1]
32-bit ARM Cortex-M3 microcontroller
[1]
T
cy(clk)
Figure
1
Min
11.88
-
Min
40
T
T
-
-
t
CLCH
t
cy(clk)
cy(clk)
CHCX
37)
i(RMS)
0.4
0.4
LPC178x/7x
= 200 mV)
Typ
-
-
-
-
-
-
Typ
12
32.768 -
002aaa907
© NXP B.V. 2011. All rights reserved.
[2]
[2]
Max
25
1000
-
-
5
5
Max
12.12
86 of 120
MHz
Unit
ns
ns
ns
ns
ns
Unit
MHz
kHz
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