ARM7 MCUs prioritise serial connectivity and data-throughput efficiency
NXP Semiconductors has two families of
MCUs that combine the compact, high-performance
72MHz ARM7TDMI core with
rich serial connectivity peripherals
including 10/100 Ethernet, full-speed USB,
and CAN 2.0B to satisfy communication-gateway,
protocol-converter and userinterface
applications.
The LPC23xx and LPC24xx families build on the
underlying efficiency of the ARM7TDMI core with
enhanced features such as an additional
Advanced High-performance Bus (AHB) dedicated
to Ethernet transactions, and a Vectored Interrupt
Controller (VIC) boosting the CPU’s interrupt-handling
capacity to 32. The enhanced bus
structure of these MCU families allows concurrent
instruction fetches with handling of Ethernet
packets and peripheral transactions for maximum
data-throughput efficiency.
Other industry-standard serial interfaces include
an SPI interface, two Synchronous Serial Ports
(SSP), three I2C interfaces and
an I2S interface. The LPC23xx
family operates as a USB full-speed
device, while the
LPC24xx adds USB host
capabilities by implementing
a full-speed Device/Host/OTG
controller. The LPC24xx
devices also implement a
memory interface supporting
off-chip SDRAM, SRAM or
Flash memories. Both families
have up to 512 kbytes of
integrated Flash, as well as
on-chip SRAM blocks for CPU
access, DMA access and
general-purpose use.
FEATURES
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- On-chip colour-LCD controller (LPC24xx)
- Versatile timers and PWMs
- SD/MMC interface
- 100-pin package options (LPC23xx)
- 208-pin packages (LPC24xx)
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APPLICATIONS
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- Industrial controls
- Medical instruments
- Protocol converters and comms systems
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