LPC2148FBD64 IC

Introduction

The LPC2141/42/44/46/48 microcontrollers are adaptable parts with an ARM7TDMI-S 16-bit/32-bit CPU and an embedded high-speed flash memory with a capacity ranging from 32 kB to 512 kB. They include real-time emulation, inbuilt trace support, and a unique accelerator design to enable high-speed operation of up to 60 MHz.

Due to their small size and low power requirements, LPC2141/42/44/46/48 are suitable for various applications such as access control, point-of-sale, communication gateways, and protocol converters. Due to their multiple serial communication connections, 32-bit timers, single or twin 10-bit ADC(s), PWM channels, and rapid GPIO lines are ideal for industrial control and medical applications. Flexibility and scalability are made possible by LPC2141/42/44/46/48’s simple-to-use In-System Programming/In-Application Programming (ISP/IAP) via on-chip boot loader software. LPC2141/42/44/46/48 architecture microcontrollers are the best option for applications requiring high processing power and small form factors.

General Description

The 16-bit/32-bit ARM7TDMI-S CPU used in the LPC2141/42/44/46/48 microcontrollers has built-in functionality for tracing and real-time emulation. Also, they have flash memory, which is very rapid and ranges in size from 32 kB to 512 kB. To put it another way, this device’s unique configuration, which includes a 128-bit memory interface and a unique accelerator design, makes it possible to execute 32-bit code very quickly. If your code must be brief and to the point, you can use the 16-bit Thumb mode instead. Your code will get 30% smaller without noticeably slowing down.

These LPC2141/42/44/46/48 chips are fantastic for little devices requiring power-efficient design, including point-of-sale and access control systems. These devices work well as voice recognition systems, communication gateways, soft modems, and protocol converters. They have a number of ways to interface with other devices, including USB, UARTs, SPI, SSP, and the I2C bus. They also have a significant quantity of memory and incredibly fast processors. These microcontrollers are great for industrial control and medical systems because of their numerous special features, such as 32-bit timers, 10-bit DACs, PWM channels, 45 high-speed GPIO lines, and up to nine external interrupt pins that are edge or level sensitive.

Features and Benefits

Key features

• Tiny LQFP64 package containing a 16/32-bit ARM7TDMI-S microprocessor.
• On-chip static RAM between 8 and 40 kB, and flash memory between 32 kB and 512 kB. High-speed 60 MHz operation is made possible by the 128-bit wide interface/accelerator.
• ISP/IAP, or in-system/application programming using a boot loader resident on the chip. In under 400 ms, a single flash sector may be erased, or the entire device can be formatted in 256 B.
• High-speed tracing of instruction execution and real-time debugging using the on-chip RealMonitor software is possible thanks to the EmbeddedICE RT and Embedded Trace interfaces.
• Device controller supporting USB 2.0 Full Speed with 2 kilobytes of endpoint RAM.
• The LPC2146/48 also has 8 kilobytes of RAM on-chip, which may be accessed through USB DMA.
• Six or fourteen analog inputs are available depending on whether you go with one or two 10-bit ADCs (LPC2141/42 vs. LPC2144/46/48) with conversion times as low as 2.44 s per channel.
• Modular analog output is provided via a single 10-bit DAC (LPC2142/44/46/48 only).
• Independently powered 32 kHz low-power Real-Time Clock (RTC).
• Modifiable interrupt priority and vector addresses for the Vectored Interrupt Controller (VIC).
• 45 fast, general-purpose I/O pins with 5 V tolerance in a compact LQFP64 package.
• The maximum number of external interrupt pins is 21.
• The on-chip PLL can be programmed to provide a maximum CPU rate of 60 MHz, with a settling time of 100 s.
• The frequency range of the on-chip integrated oscillator is 1 MHz to 25 MHz when using an external crystal.
• The Idle and Power-down settings are there to conserve energy.
• Peripheral function scaling and individual enable/disable for further power optimization.

Functional Description

● Architectural overview

The ARM7TDMI-S is a high-performance, low-power, 32-bit microprocessor suitable for various applications. The ARM architecture is simpler than microprogrammed Complex Instruction Set Computers (CISC) since it is based on Reduced Instruction Set Computer (RISC) concepts. Thanks to this simplification, a compact, inexpensive processor core can achieve a high instruction throughput and remarkable real-time interrupt response. The use of pipeline techniques ensures that the processor and memory systems can function in a seamless manner. Three instructions are typically decoded and fetched from memory in parallel while one is being executed. For high-volume applications with memory constraints or where code density is an issue, the ARM7TDMI-S processor’s unique architectural method, Thumb, is an excellent choice.

The thumb is based on the concept of a minimal set of instructions. The ARM7TDMI-S basically has two different sets of instructions:

• The typical ARM 32-bit system.
• An array of 16 Thumb bits.

Due to the Thumb set’s 16-bit instruction length, it may attain a density near that of typical ARM code while still keeping most of the ARM’s speed advantage over a conventional 16-bit processor with 16-bit registers. This is practical because both Thumb and ARM codes use the same 32-bit registers. Up to 65% of the code size of ARM can be delivered by thumb code, and performance is boosted by 160% compared to a comparable ARM processor with a 16-bit memory architecture.

The LPC2141/42/44/46/48’s flash implementation, in particular, supports full-speed execution even when operating in ARM mode. Short, performance-critical bits of code (like interrupt service routines and digital signal processing algorithms) should be written in ARM mode. There will be a tiny effect on code size, but the speed improvement above Thumb mode can be as high as 30%.

● On-chip flash program memory

For example, the LPC2141 has 32 kB of flash memory, the LPC1442 has 64 kB, the LPC1444 has 128 kB, the LPC2468 has 256 kB, and the LPC2468 has 512 kB. Both code and data can be stored in this RAM. There are a few different ways to set up flash memory. The serial port allows for In-System programming. To further increase its versatility for data storage, field firmware upgrades, etc., the application program can also wipe and/or program the flash while the application is running. On the LPC2141/42/44/46/48, the flash memory accessible for the user’s code is 32 kB, 64 kB, 128 kB, 256 kB, and 500 kB, respectively, due to the architectural approach chosen for an on-chip boot loader. There is a minimum of 100k erase/write cycles and 20 years of data retention with the LPC2141/42/44/46/48 flash memory.

● On-chip static RAM

The on-chip static RAM can be used to store both code and data. The SRAM allows data access options of 8, 16, and 32 bits. Compared to the LPC2141, which has only 8 kB of static RAM, the LPC2142/44 and LPC2146/48 have twice as much RAM. The 8 kB of USB-specific SRAM that the LPC2146/48 has can be utilized as system RAM to store data and run applications, making it a unique device.

Conclusion

The LPC2141/42/44/46/48 microcontrollers provide a strong and effective solution for a number of embedded applications, in conclusion. We wholeheartedly urge you to take these microcontrollers into consideration if you’re seeking a dependable and affordable alternative for your project. And we also urge you to contact ICRFQ, your dependable electronic component distributor, if you’re interested in placing an order for the LPC2148FBD64 or learning more about its features. Utilize the performance and adaptability the LPC2141/42/44/46/48 microcontrollers offer without holding back. Call ICRFQ right away!

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