參數(shù)資料
型號： LPC1313FHN33/01,51
廠商： NXP Semiconductors
文件頁數(shù)： 58/74頁
文件大小： 0K
描述： MCU 32BIT ARM 32KB FLASH 32HVQFN
標(biāo)準(zhǔn)包裝： 4,000
系列： LPC13xx
核心處理器： ARM? Cortex?-M3
芯體尺寸： 32-位
速度： 72MHz
連通性： I²C，Microwire，SPI，SSI，UART/USART
外圍設(shè)備： 欠壓檢測/復(fù)位，POR，WDT
輸入/輸出數(shù)： 28
程序存儲器容量： 32KB（32K x 8）
程序存儲器類型： 閃存
RAM 容量： 8K x 8
電壓 - 電源 (Vcc/Vdd)： 2 V ~ 3.6 V
數(shù)據(jù)轉(zhuǎn)換器： A/D 8x10b
振蕩器型： 內(nèi)部
工作溫度： -40°C ~ 85°C
封裝/外殼： 32-VQFN 裸露焊盤
包裝： 帶卷 (TR)
LPC1311_13_42_43
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2012. All rights reserved.
Product data sheet
Rev. 5 — 6 June 2012
61 of 74
NXP Semiconductors
LPC1311/13/42/43
32-bit ARM Cortex-M3 microcontroller
11.3 XTAL Printed-Circuit Board (PCB) layout guidelines
The crystal should be connected on the PCB as close as possible to the oscillator input
and output pins of the chip. Take care that the load capacitors Cx1, Cx2, and Cx3 in case of
third overtone crystal usage have a common ground plane. The external components
must also be connected to the ground plain. Loops must be made as small as possible in
order to keep the noise coupled in via the PCB as small as possible. Also parasitics
should stay as small as possible. Values of Cx1 and Cx2 should be chosen smaller
accordingly to the increase in parasitics of the PCB layout.
Table 21.
Recommended values for CX1/CX2 in oscillation mode (crystal and external
components parameters) low frequency mode
Fundamental oscillation
frequency FOSC
Crystal load
capacitance CL
Maximum crystal
series resistance RS
External load
capacitors CX1, CX2
1 MHz - 5 MHz
10 pF
< 300
Ω
18 pF, 18 pF
20 pF
< 300
Ω
39 pF, 39 pF
30 pF
< 300
Ω
57 pF, 57 pF
5 MHz - 10 MHz
10 pF
< 300
Ω
18 pF, 18 pF
20 pF
< 200
Ω
39 pF, 39 pF
30 pF
< 100
Ω
57 pF, 57 pF
10 MHz - 15 MHz
10 pF
< 160
Ω
18 pF, 18 pF
20 pF
< 60
Ω
39 pF, 39 pF
15 MHz - 20 MHz
10 pF
< 80
Ω
18 pF, 18 pF
Table 22.
Recommended values for CX1/CX2 in oscillation mode (crystal and external
components parameters) high frequency mode
Fundamental oscillation
frequency FOSC
Crystal load
capacitance CL
Maximum crystal
series resistance RS
External load
capacitors CX1, CX2
15 MHz - 20 MHz
10 pF
< 180
Ω
18 pF, 18 pF
20 pF
< 100
Ω
39 pF, 39 pF
20 MHz - 25 MHz
10 pF
< 160
Ω
18 pF, 18 pF
20 pF
< 80
Ω
39 pF, 39 pF
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