特性 Features

? Operating Characteristics

– Voltage range: 1.71 to 3.6 V

– Flash write voltage range: 1.71 to 3.6 V

– Temperature range (ambient): -40 to 85°C

? Performance

– Up to 100 MHz ARM Cortex-M4 core with DSP instructions delivering 1.25 Dhrystone MIPS per MHz

? Memories and memory interfaces

– Up to 512 KB program flash memory on nonFlexMemory devices

– Up to 128 KB RAM

– Serial programming interface (EzPort)

– FlexBus external bus interface

? Clocks

– 3 to 32 MHz crystal oscillator

– 32 kHz crystal oscillator

– Multi-purpose clock generator

? System peripherals

– Multiple low-power modes to provide power optimization based on application requirements

– Memory protection unit with multi-master protection

– 16-channel DMA controller, supporting up to 63 request sources

– External watchdog monitor

– Software watchdog

– Low-leakage wakeup unit

? Security and integrity modules

– Hardware CRC module to support fast cyclic redundancy checks

– Hardware random-number generator

– Hardware encryption supporting DES, 3DES, AES, MD5, SHA-1, and SHA-256 algorithms

– 128-bit unique identification (ID) number per chip

? Analog modules

– Two 16-bit SAR ADCs

– Programmable gain amplifier (PGA) (up to x64) integrated into each ADC

– Two 12-bit DACs

– Two operational amplifiers

– Two transimpedance amplifiers

– Three analog comparators (CMP) containing a 6-bit DAC and programmable reference input

– Voltage reference

? Timers

– Programmable delay block

– Eight-channel motor control/general purpose/PWM timer

– Two 2-channel quadrature decoder/general purpose timers

– IEEE 1588 timers

– Periodic interrupt timers

– 16-bit low-power timer

– Carrier modulator transmitter

– Real-time clock

? Communication interfaces

– Ethernet controller with MII and RMII interface to external PHY and hardware IEEE 1588 capability

– USB full-/low-speed On-the-Go controller with onchip transceiver

– Three SPI modules

– Two I2C modules

– Six UART modules

– Secure Digital host controller (SDHC)

– I2S module