68951e8d72
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60 lines
3.4 KiB
Plaintext
60 lines
3.4 KiB
Plaintext
General Description
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^^^^^^^^^^^^^^^^^^^
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http://www.nxp.com/pip/LPC2141FBD64.html:
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The LPC2141/42/44/46/48 microcontrollers are based on a 16-bit/32-bit ARM7TDMI-S
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CPU with real-time emulation and embedded trace support, that combine
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microcontroller with embedded high-speed flash memory ranging from 32 kB to
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512 kB. A 128-bit wide memory interface and a unique accelerator architecture
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enable 32-bit code execution at the maximum clock rate. For critical code size
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applications, the alternative 16-bit Thumb mode reduces code by more than 30 pct
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with minimal performance penalty.
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Due to their tiny size and low power consumption, LPC2141/42/44/46/48 are ideal
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for applications where miniaturization is a key requirement, such as access
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control and point-of-sale. Serial communications interfaces ranging from a USB 2.0
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Full-speed device, multiple UARTs, SPI, SSP to I2C-bus and on-chip SRAM of 8 kB
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up to 40 kB, make these devices very well suited for communication gateways and
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protocol converters, soft modems, voice recognition and low end imaging, providing
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both large buffer size and high processing power. Various 32-bit timers, single
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or dual 10-bit ADC(s), 10-bit DAC, PWM channels and 45 fast GPIO lines with up
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to nine edge or level sensitive external interrupt pins make these microcontrollers
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suitable for industrial control and medical systems.
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Features
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^^^^^^^^
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o 16-bit/32-bit ARM7TDMI-S microcontroller in a tiny LQFP64 package.
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o 8 kB to 40 kB of on-chip static RAM and 32 kB to 512 kB of on-chip flash memory.
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128-bit wide interface/accelerator enables high-speed 60 MHz operation.
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o In-System Programming/In-Application Programming (ISP/IAP) via on-chip boot
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loader software. Single flash sector or full chip erase in 400 ms and programming
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of 256 B in 1 ms.
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o EmbeddedICE RT and Embedded Trace interfaces offer real-time debugging with the
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on-chip RealMonitor software and high-speed tracing of instruction execution.
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o USB 2.0 Full-speed compliant device controller with 2 kB of endpoint RAM. In addition,
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the LPC2146/48 provides 8 kB of on-chip RAM accessible to USB by DMA.
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o One or two (LPC2141/42 vs. LPC2144/46/48) 10-bit ADCs provide a total of 6/14 analog
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inputs, with conversion times as low as 2.44 us per channel.
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o Single 10-bit DAC provides variable analog output (LPC2142/44/46/48 only).
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o Two 32-bit timers/external event counters (with four capture and four compare
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channels each), PWM unit (six outputs) and watchdog.
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o Low power Real-Time Clock (RTC) with independent power and 32 kHz clock input.
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o Multiple serial interfaces including two UARTs (16C550), two Fast I2C-bus (400
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kbit/s), SPI and SSP with buffering and variable data length capabilities.
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o Vectored Interrupt Controller (VIC) with configurable priorities and vector addresses.
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o Up to 45 of 5 V tolerant fast general purpose I/O pins in a tiny LQFP64 package.
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o Up to 21 external interrupt pins available.
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o 60 MHz maximum CPU clock available from programmable on-chip PLL with settling
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time of 100 us.
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o On-chip integrated oscillator operates with an external crystal from 1 MHz to 25 MHz.
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o Power saving modes include Idle and Power-down.
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o Individual enable/disable of peripheral functions as well as peripheral clock scaling
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for additional power optimization.
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o Processor wake-up from Power-down mode via external interrupt or BOD.
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o Single power supply chip with POR and BOD circuits:
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o CPU operating voltage range of 3.0 V to 3.6 V (3.3 V +- 10 pct) with 5 V tolerant
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I/O pads.
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