Описание
Kinetis KM1x MCUs enable single-chip one-, two-, and three-phase electricity meters, as well as flow meter and other precision measurement applications. Includes a powerful analog front end Provides security, including memory protection, tamper detection, and protection of supplier/user data Supports high-precision internal voltage reference with low temperature drift Features a comprehensive enablement suite including reference designs.
- Operating Characteristics
- Voltage range: 1.71 V to 3.6 V (when Analog Front End (AFE) is not used)
- Voltage range: 2.7 V to 3.6 V (when Analog Front End (AFE) is used)
- iRTC battery supply voltage range: 1.71 to 3.6 V
- Flash write voltage range: 1.71 to 3.6 V
- Temperature range (ambient): -40°C to 85°C
- Performance
- Up to 50 MHz ARM Cortex-M0+ core delivering 0.95 Dhrystone MIPS per MHz
- Memories and memory interfaces
- 128/64 KB program flash memory. There is no FlexMemory on these devices
- 16 KB of single access RAM
- Clocks
- 1 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
- 4-channel DMA controller, supporting up to 64 request sources
- External watchdog monitor
- Robust watchdog monitor
- Low-leakage wakeup unit
- Asynchronous wakeup unit
- Peripheral Crossbar (allows internal signals to be connected to other on-chip modules)
- Security and integrity modules
- Hardware programmable CRC module to support fast cyclic redundancy checks
- Hardware random-number generator
- 128-bit unique identification (ID) number per chip
- Human-machine interface
- Segment LCD controller supporting up to 36 frontplanes and 8 backplanes or 40 frontplanes and 4 backplanes
- General-purpose input/output which can acts as Rapid GPIO (single cycle access)
- Analog modules
- 16-bit SAR ADC
- 24-bit Analog Front End comprising of 24-bit Sigma Delta ADCs (after averaging)
- Programmable Gain Amplifier (PGA with gains upto 32)
- Two analog comparators (CMP) containing a 6-bit DAC and programmable reference input
- 1.2V Voltage reference
- Timers
- 4 channel Quad Timer with 16-bit counters
- Periodic interrupt timers
- 16-bit low-power timer
- Independent Real Time Clock with calendaring and compensation
- Communication interfaces
- One SPI module with FIFO support (supports 5V AMR operation)
- One SPI module without FIFO (no AMR operation)
- Two I2C modules with SMBus support
- Two UART modules with ISO7816 support and Two UART without ISO 7816 support
- Any one SCI can be used for IrDA operation. 5V AMR support on one SCI.
