NXP | LPC2420FBD208,551

NXP Semiconductors designed the LPC2420/2460 microcontroller around a 16-bit/32-bit ARM7TDMI-S CPU core with real-time debug interfaces that include both JTAG and embedded trace. The LPC2420/2460 is flashless. The LPC2420/2460 can execute both 32-bit ARM and 16-bit Thumb instructions. Support for the two instruction sets means engineers can choose to optimize their application for either performance or code size at the sub-routine level. When the core executes instructions in Thumb state it can reduce code size by more than 30 % with only a small loss in performance while executing instructions in ARM state maximizes core performance.

Features :

• ARM7TDMI-S processor, running at up to 72 MHz.
• Dual Advanced High-performance Bus (AHB) system allows simultaneous Ethernet DMA, and USB DMA with no contention (LPC2460 only).
• EMC provides support for asynchronous static memory devices such as RAM, ROM and flash, as well as dynamic memories such as single data rate SDRAM.
• Advanced Vectored Interrupt Controller (VIC), supporting up to 32 vectored interrupts.
• General Purpose DMA controller (GPDMA) on AHB that can be used with the SSP, I2S, and SD/MMC interface as well as for memory-to-memory transfers.
• Standard ARM test/debug interface for compatibility with existing tools.
• Emulation trace module supports real-time trace.
• Single 3.3 V power supply (3.0 V to 3.6 V).
• Four reduced power modes: idle, sleep, power-down, and deep power-down.
• Four external interrupt inputs configurable as edge/level sensitive. All pins on port 0 and port 2 can be used as edge sensitive interrupt sources.
• Processor wake-up from Power-down mode via any interrupt able to operate during Power-down mode (includes external interrupts, RTC interrupt, USB activity, port 0/2 pin interrupt, Ethernet wake-up interrupt (LPC2460 only), CAN bus activity (LPC2460 only)).
• Two independent power domains allow fine tuning of power consumption based on needed features.
• Each peripheral has its own clock divider for further power saving. These dividers help reduce active power by 20 % to 30 %.
• Brownout detect with separate thresholds for interrupt and forced reset.
• On-chip power-on reset.
• On-chip crystal oscillator with an operating range of 1 MHz to 24 MHz.
• 4 MHz internal RC oscillator trimmed to 1 % accuracy that can optionally be used as the system clock. When used as the CPU clock, does not allow CAN and USB to run.
• On-chip PLL allows CPU operation up to the maximum CPU rate without the need for a high frequency crystal. May be run from the main oscillator, the internal RC oscillator, or the RTC oscillator.
• Boundary scan for simplified board testing.
• Versatile pin function selections allow more possibilities for using on-chip peripheral functions.

Applications :

• Industrial control
• Medical systems
• Protocol converter
• Communications