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LPC1227FBD64301 Datasheet(PDF) 45 Page - NXP Semiconductors

Part No. LPC1227FBD64301
Description  32-bit ARM Cortex-M0 microcontroller; up to 128 kB flash and 8 kB SRAM
Download  60 Pages
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Maker  NXP [NXP Semiconductors]
Homepage  http://www.nxp.com
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LPC1227FBD64301 Datasheet(HTML) 45 Page - NXP Semiconductors

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LPC122X
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2011. All rights reserved.
Objective data sheet
Rev. 1.1 — 21 February 2011
45 of 60
NXP Semiconductors
LPC122x
32-bit ARM Cortex-M0 microcontroller
11.3 Internal oscillators
[1]
Parameters are valid over operating temperature range unless otherwise specified.
[2]
Typical ratings are not guaranteed. The values listed are at nominal supply voltages.
[1]
Typical ratings are not guaranteed. The values listed are at room temperature (25
C), nominal supply
voltages.
[2]
The typical frequency spread over processing and temperature (Tamb = 40 C to +85 C) is 40 %.
[3]
See the LPC122x user manual.
11.4 I2C-bus
Table 13.
Dynamic characteristic: internal oscillators
Tamb = 40 C to +85 C; VDD(3V3) over specified ranges.[1]
Symbol
Parameter
Conditions
Min
Typ[2]
Max
Unit
fosc(RC)
internal RC oscillator frequency
-
11.88
12
12.12
MHz
Fig 19. Internal RC oscillator frequency versus temperature
Table 14.
Dynamic characteristics: Watchdog oscillator
Symbol Parameter
Conditions
Min
Typ[1]
Max
Unit
fosc(int)
internal oscillator
frequency
DIVSEL = 0x1F, FREQSEL = 0x1
in the WDTOSCCTRL register;
[2][3] -7.8
-
kHz
DIVSEL = 0x00, FREQSEL = 0xF
in the WDTOSCCTRL register
[2][3] -
1700
-
kHz
002aag020
11.95
12.05
12.15
fosc(RC)
(MHz)
11.85
temperature (
°C)
−40
85
35
10
60
−15
VDD = 3.6 V
3.3 V
3.0 V
12 MHz + 1%
12 MHz
− 1%
Table 15.
Dynamic characteristic: I2C-bus pins
Tamb = 40 C to +85 C.[1]
Symbol
Parameter
Conditions
Min
Max
Unit
fSCL
SCL clock frequency
Standard-mode
0
100
kHz
Fast-mode
0
400
kHz
Fast-mode Plus
0
1
MHz


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