Описание
The LPC43S70FET256 is a ARM Cortex-M4 based microcontroller for embedded applications which includes an ARM Cortex-M0 coprocessor and an ARM Cortex-M0 subsystem for managing peripherals, 282 kB of SRAM, advanced configurable peripherals such as the State Configurable Timer (SCTimer/PWM) and the Serial General Purpose I/O (SGPIO) interface, security features with AES engine, two High-speed USB controllers, Ethernet, LCD, an external memory controller, and multiple digital and analog peripherals including a high-speed 12-bit ADC. The LPC43S70FET256 operates at CPU frequencies of up to 204 MHz. The ARM Cortex-M4 is a 32-bit core that offers system enhancements such as low power consumption, enhanced debug features, and a high level of support block integration. The ARM Cortex-M4 CPU incorporates a 3-stage pipeline, uses a Harvard architecture with separate local instruction and data buses as well as a third bus for peripherals, and includes an internal prefetch unit that supports speculative branching. The ARM Cortex-M4 supports single-cycle digital signal processing and SIMD instructions. A hardware floating-point unit is integrated in the core. The ARM Cortex-M4 with floating-point unit is often referred to as M4F. The LPC43S70 include an application ARM Cortex-M0 coprocessor and a second ARM Cortex-M0 subsystem for managing the SGPIO and SPI peripherals. The ARM Cortex-M0 core is an energy-efficient and easy-to-use 32-bit core which is code- and tool-compatible with the Cortex-M4 core. Both Cortex-M0 cores offer up to 204 MHz performance with a simple instruction set and reduced code size. The Cortex-M0 does not support hardware multiply.
- Main Cortex-M4 processor
- ARM Cortex-M4 processor, running at frequencies of up to 204 MHz.
- Built-in Memory Protection Unit (MPU) supporting eight regions.
- Built-in Nested Vectored Interrupt Controller (NVIC).
- Hardware floating-point unit.
- Non-maskable Interrupt (NMI) input.
- JTAG and Serial Wire Debug (SWD), serial trace, eight breakpoints, and four watchpoints.
- Enhanced Trace Module (ETM) and Enhanced Trace Buffer (ETB) support.
- System tick timer.
- Cortex-M0 coprocessor
- ARM Cortex-M0 coprocessor capable of off-loading the main ARM Cortex-M4 processor.
- Running at frequencies of up to 204 MHz.
- JTAG and built-in NVIC.
- Cortex-M0 subsystem
- ARM Cortex-M0 processor controlling the SPI and SGPIO peripherals residing ona separate AHB multilayer matrix with direct access to 2 kB + 16 kB of SRAM.
- Running at frequencies of up to 204 MHz.
- Connected via a core-to-core bridge to the main AHB multilayer matrix and the main ARM Cortex-M4 processor.
- JTAG and built-in NVIC.
- On-chip memory
- 264 kB SRAM for code and data use on the main AHB multilayer matrix plus 18 kB of SRAM on the Cortex-M0 subsystem.
- Multiple SRAM blocks with separate bus access. Two SRAM blocks can be powered down individually.
- 64 kB ROM containing boot code and on-chip software drivers.
- 64-bit of One-Time Programmable (OTP) memory for general-purpose use.
- Two banks (256 bit total) One-Time Programmable (OTP) memory for AES key storage. One bank can store an encrypted key for decoding the boot image.
- AES engine for encryption and decryption of the boot image and data with DMA support and programmable via a ROM-based API.
- Configurable digital peripherals
- Serial GPIO (SGPIO) interface.
- State Configurable Timer (SCT) subsystem on AHB.
- Global Input Multiplexer Array (GIMA) allows to cross-connect multiple inputs and outputs to event driven peripherals like the timers, SCT, and ADC0/1.
- Serial interfaces
- Quad SPI Flash Interface (SPIFI) with four lanes and up to 52 MB per second.
- 10/100T Ethernet MAC with RMII and MII interfaces and DMA support for high throughput at low CPU load. Support for IEEE 1588 time stamping/advanced time stamping (IEEE 1588-2008 v2).
- One High-speed USB 2.0 Host/Device/OTG interface with DMA support and on-chip high-speed PHY.
- One High-speed USB 2.0 Host/Device interface with DMA support, on-chip full-speed PHY and ULPI interface to external high-speed PHY.
- USB interface electrical test software included in ROM USB stack.
- One 550 UART with DMA support and full modem interface.
- Three 550 USARTs with DMA and synchronous mode support and a smart card interface conforming to ISO7816 specification. One USART with IrDA interface.
- Two C_CAN 2.0B controllers with one channel each. Use of C_CAN controller excludes operation of all other peripherals connected to the same bus bridge.
- Two SSP controllers with FIFO and multi-protocol support. Both SSPs with DMA support.
- One SPI controller.
- One Fast-mode Plus I²C-bus interface with monitor mode and with open-drain I/O pins conforming to the full I²C-bus specification. Supports data rates of up to 1 Mbit/s.
- One standard I²C-bus interface with monitor mode and with standard I/O pins.
- Two I²S interfaces, each with DMA support and with one input and one output.
