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參數(shù)資料
| 型號： | LPC2290FBD144 |
| 廠商： | NXP Semiconductors N.V. |
| 元件分類： | 數(shù)學處理器 |
| 英文描述： | 16-32-bit ARM microcontroller with CAN, 10-bit ADC and external memory interface |
| 封裝： | LPC2290FBD144/01<SOT486-1 (LQFP144)|<<http://www.nxp.com/packages/SOT486-1.html<1<Always Pb-free,; |
| 文件頁數(shù)： | 23/41頁 |
| 文件大?。?/td> | 198K |
| 代理商： | LPC2290FBD144 |
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LPC2290_3
NXP B.V. 2006. All rights reserved.
Product data sheet
Rev. 03 — 16 November 2006
23 of 41
NXP Semiconductors
LPC2290
16/32-bit ARM microcontroller with external memory interface
Match register updates are synchronized with pulse outputs to prevent generation of
erroneous pulses. Software must ‘release’ new match values before they can become
effective.
May be used as a standard timer if the PWM mode is not enabled.
A 32-bit Timer/Counter with a programmable 32-bit prescaler.
6.18 System control
6.18.1
Crystal oscillator
The oscillator supports crystals in the range of 1 MHz to 30 MHz. The oscillator output
frequency is called f
osc
and the ARM processor clock frequency is referred to as CCLK for
purposes of rate equations, etc. f
osc
and CCLK are the same value unless the PLL is
running and connected. Refer to
Section 6.18.2 “PLL”
for additional information.
6.18.2
PLL
The PLL accepts an input clock frequency in the range of 10 MHz to 25 MHz. The input
frequency is multiplied up into the range of 10 MHz to 60 MHz with a Current Controlled
Oscillator (CCO). The multiplier can be an integer value from 1 to 32 (in practice, the
multiplier value cannot be higher than 6 on this family of microcontrollers due to the upper
frequency limit of the CPU). The CCO operates in the range of 156 MHz to 320 MHz, so
there is an additional divider in the loop to keep the CCO within its frequency range while
the PLL is providing the desired output frequency. The output divider may be set to divide
by 2, 4, 8, or 16 to produce the output clock. Since the minimum output divider value is 2,
it is insured that the PLL output has a 50 % duty cycle.The PLL is turned off and bypassed
following a chip reset and may be enabled by software. The program must configure and
activate the PLL, wait for the PLL to Lock, then connect to the PLL as a clock source. The
PLL settling time is 100
μ
s.
6.18.3
Reset and wake-up timer
Reset has two sources on the LPC2290: the RESET pin and watchdog reset. The RESET
pin is a Schmitt trigger input pin with an additional glitch filter. Assertion of chip reset by
any source starts the Wake-up Timer (see Wake-up Timer description below), causing the
internal chip reset to remain asserted until the external reset is de-asserted, the oscillator
is running, a fixed number of clocks have passed, and the on-chip flash controller has
completed its initialization.
When the internal reset is removed, the processor begins executing at address 0, which is
the reset vector. At that point, all of the processor and peripheral registers have been
initialized to predetermined values.
The Wake-up Timer ensures that the oscillator and other analog functions required for
chip operation are fully functional before the processor is allowed to execute instructions.
This is important at power-on, all types of reset, and whenever any of the aforementioned
functions are turned off for any reason. Since the oscillator and other functions are turned
off during Power-down mode, any wake-up of the processor from Power-down mode
makes use of the Wake-up Timer.
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LPC2290FBD144,551 | 功能描述:ARM微控制器 - MCU RLESS/16K RM/2 CAN/ADC/EXT BUS RoHS:否 制造商:STMicroelectronics 核心:ARM Cortex M4F 處理器系列:STM32F373xx 數(shù)據(jù)總線寬度:32 bit 最大時鐘頻率:72 MHz 程序存儲器大小:256 KB 數(shù)據(jù) RAM 大小:32 KB 片上 ADC:Yes 工作電源電壓:1.65 V to 3.6 V, 2 V to 3.6 V, 2.2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:LQFP-48 安裝風格:SMD/SMT |
| LPC2290FBD144/01 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:16/32-bit ARM microcontroller with CAN, 10-bit ADC and external memory interface |
| LPC2290FBD144/01,5 | 功能描述:ARM微控制器 - MCU ARM7 16KR/2CAN/ADC ROMLESS RoHS:否 制造商:STMicroelectronics 核心:ARM Cortex M4F 處理器系列:STM32F373xx 數(shù)據(jù)總線寬度:32 bit 最大時鐘頻率:72 MHz 程序存儲器大小:256 KB 數(shù)據(jù) RAM 大小:32 KB 片上 ADC:Yes 工作電源電壓:1.65 V to 3.6 V, 2 V to 3.6 V, 2.2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:LQFP-48 安裝風格:SMD/SMT |
| LPC2290FBD144551 | 制造商:NXP Semiconductors 功能描述:IC 16/32BIT MCU ARM7 SMD LPC2290 |
| LPC2292 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:16/32-bit ARM microcontrollers; 256 kB ISP/IAP flash with CAN, 10-bit ADC and external memory interface |
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