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

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Functional overviewSTM32L162VD, STM32L162ZD, STM32L162QD, STM32L162RD3.19.2 Universal synchronous/asynchronous receiver transmitter (USART)The three USART and two UART interfaces are able to communicate at speeds of up to 4Mbit/s. They support IrDA SIR ENDEC, are ISO 7816 compliant and have LIN Master/Slavecapability. The three USARTs provide hardware management of the CTS and RTS signals.All USART/UART interfaces can be served by the DMA controller.3.19.3 Serial peripheral interface (SPI)Up to three SPIs are able to communicate at up to 16 Mbits/s in slave and master modes infull-duplex and simplex communication modes. The 3-bit prescaler gives 8 master modefrequencies and the frame is configurable to 8 bits or 16 bits. The hardware CRCgeneration/verification supports basic SD Card/MMC modes.The SPIs can be served by the DMA controller.3.19.4 Inter-integrated sound (I 2 S)3.19.5 SDIOTwo standard I2S interfaces (multiplexed with SPI2 and SPI3) are available. They canoperate in master or slave mode, and can be configured to operate with a 16-/32-bitresolution as input or output channels. Audio sampling frequencies from 8 kHz up to 96 kHzare supported. When either or both of the I2S interfaces is/are configured in master mode,the master clock can be output to the external DAC/CODEC at 256 times the samplingfrequency.An SD/SDIO/MMC host interface is available, that supports MultiMediaCard SystemSpecification Version 4.2 in three different databus modes: 1-bit (default), 4-bit and 8-bit.The interface allows data transfer at up to 48 MHz in 8-bit mode, and is compliant with theSD Memory Card Specification Version 2.0.The SDIO Card Specification Version 2.0 is also supported with two different databusmodes: 1-bit (default) and 4-bit.The current version supports only one SD/SDIO/MMC4.2 card at any one time and a stackof MMC4.1 or previous.In addition to SD/SDIO/MMC, this interface is fully compliant with the CE-ATA digital protocolRev1.1.3.19.6 Universal serial bus (USB)The STM32L162xD embeds a USB device peripheral compatible with the USB full-speed12 Mbit/s. The USB interface implements a full-speed (12 Mbit/s) function interface. It hassoftware-configurable endpoint setting and supports suspend/resume. The dedicated48 MHz clock is generated from the internal main PLL (the clock source must use a HSEcrystal oscillator).26/124 Doc ID 022268 Rev 2
STM32L162VD, STM32L162ZD, STM32L162QD, STM32L162RDFunctional overview3.20 CRC (cyclic redundancy check) calculation unitThe CRC (cyclic redundancy check) calculation unit is used to get a CRC code from a 32-bitdata word and a fixed generator polynomial.Among other applications, CRC-based techniques are used to verify data transmission orstorage integrity. In the scope of the EN/IEC 60335-1 standard, they offer a means ofverifying the Flash memory integrity. The CRC calculation unit helps compute a signature ofthe software during runtime, to be compared with a reference signature generated at linktimeand stored at a given memory location.3.21 Development supportSerial wire JTAG debug port (SWJ-DP)The ARM SWJ-DP interface is embedded, and is a combined JTAG and serial wire debugport that enables either a serial wire debug or a JTAG probe to be connected to the target.The JTAG TMS and TCK pins are shared with SWDIO and SWCLK, respectively, and aspecific sequence on the TMS pin is used to switch between JTAG-DP and SW-DP.The JTAG port can be permanently disabled with a JTAG fuse.Embedded Trace MacrocellThe ARM® Embedded Trace Macrocell provides a greater visibility of the instruction anddata flow inside the CPU core by streaming compressed data at a very high rate from theSTM32L162xD through a small number of ETM pins to an external hardware trace portanalyzer (TPA) device. The TPA is connected to a host computer using USB, Ethernet, orany other high-speed channel. Real-time instruction and data flow activity can be recordedand then formatted for display on the host computer running debugger software. TPAhardware is commercially available from common development tool vendors. It operateswith third party debugger software tools.Doc ID 022268 Rev 2 27/124
Page 1 and 2: STM32L162VD STM32L162ZDSTM32L162QD
Page 3 and 4: STM32L162VD, STM32L162ZD, STM32L162
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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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