Ultralow power ARM-based 32-bit MCU with 384 Kbytes Flash ... - Keil

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Functional overviewSTM32L162VD, STM32L162ZD, STM32L162QD, STM32L162RD3.7 MemoriesThe STM32L162xD devices have the following features:●●48 Kbyte of embedded RAM accessed (read/write) at CPU clock speed with 0 waitstates. With the enhanced bus matrix, operating the RAM does not lead to anyperformance penalty during accesses to the system bus (AHB and APB buses).The non-volatile memory is divided into three arrays:– 384 Kbyte of embedded Flash program memory– 12 Kbyte of data EEPROM– Options bytesFlash program and data EEPROM are divided into two banks, this enables writing inone bank while running code or reading data in the other bank.The options bytes are used to write-protect the memory (with 4 KB granularity) and/orreadout-protect the whole memory with the following options:– Level 0: no readout protection– Level 1: memory readout protection, the Flash memory cannot be read from orwritten to if either debug features are connected or boot in RAM is selected– Level 2: chip readout protection, debug features (Cortex-M3 JTAG and serial wire)and boot in RAM selection disabled (JTAG fuse)The whole non-volatile memory embeds the error correction code (ECC) feature.3.8 FSMC (flexible static memory controller)The FSMC supports the following modes: SRAM, PSRAM, NOR Flash.Functionality overview:● Up to 26 bit address bus● Up to 16-bit data bus● Write FIFO● Burst mode● Code execution from external memory● Four chip select signals● Up to 32 MHz external access (TBC)3.9 DMA (direct memory access)The flexible 12-channel, general-purpose DMA is able to manage memory-to-memory,peripheral-to-memory and memory-to-peripheral transfers. The DMA controller supportscircular buffer management, avoiding the generation of interrupts when the controllerreaches the end of the buffer.Each channel is connected to dedicated hardware DMA requests, with software triggersupport for each channel. Configuration is done by software and transfer sizes betweensource and destination are independent.The DMA can be used with the main peripherals: AES, SPI, I 2 C, USART, SDIO, generalpurposetimers, DAC, and ADC.20/124 Doc ID 022268 Rev 2
STM32L162VD, STM32L162ZD, STM32L162QD, STM32L162RDFunctional overview3.10 LCD (liquid crystal display)The LCD drives up to 8 common terminals and 44 segment terminals to drive up to 320pixels.● Internal step-up converter to guarantee functionality and contrast control irrespective ofV DD . This converter can be deactivated, in which case the V LCD pin is used to providethe voltage to the LCD● Supports static, 1/2, 1/3, 1/4 and 1/8 duty● Supports static, 1/2, 1/3 and 1/4 bias● Phase inversion to reduce power consumption and EMI● Up to 8 pixels can be programmed to blink● Unneeded segments and common pins can be used as general I/O pins● LCD RAM can be updated at any time owing to a double-buffer● The LCD controller can operate in Stop mode3.11 ADC (analog-to-digital converter)A 12-bit analog-to-digital converters is embedded into STM32L162xD devices with up to 40external channels, performing conversions in single-shot or scan mode. In scan mode,automatic conversion is performed on a selected group of analog inputs with up to 29external channel in a group.The ADC can be served by the DMA controller.An analog watchdog feature allows very precise monitoring of the converted voltage of one,some or all scanned channels. An interrupt is generated when the converted voltage isoutside the programmed thresholds.The events generated by the general-purpose timers (TIMx) can be internally connected tothe ADC start triggers, to allow the application to synchronize A/D conversions and timers.An injection mode allows high priority conversions to be done by interrupting a scan modewhich runs in as a background task.The ADC includes a specific low power mode. The converter is able to operate at maximumspeed even if the CPU is operating at a very low frequency and has an auto-shutdownfunction. The ADC’s runtime and analog front-end current consumption are thus minimizedwhatever the MCU operating mode.Temperature sensorThe temperature sensor has to generate a voltage that varies linearly with temperature. Theconversion range is between 1.8 V < V DDA < 3.6 V. The temperature sensor is internallyconnected to the ADC_IN16 input channel.Voltage referenceAn internal precise voltage reference can be measured through the ADC. It enablesaccurate monitoring of the V DD value (when no external voltage, V REF+ , is available forADC).Doc ID 022268 Rev 2 21/124
Page 1 and 2: STM32L162VD STM32L162ZDSTM32L162QD
Page 3 and 4: STM32L162VD, STM32L162ZD, STM32L162
Page 6: List of tablesSTM32L162VD, STM32L16
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Page 24 and 25: Functional overviewSTM32L162VD, STM
Page 26 and 27: Functional overviewSTM32L162VD, STM
Page 28 and 29: Pin descriptionsSTM32L162VD, STM32L
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Page 48 and 49: Electrical characteristicsSTM32L162
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Electrical characteristicsSTM32L162
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Package characteristicsSTM32L162VD,
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Ordering information schemeSTM32L16
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STM32L162VD, STM32L162ZD, STM32L162
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Ultralow power ARM-based 32-bit MCU with 384 Kbytes Flash ... - Keil

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