STM32L100C6 datasheet(27/103 Pages) STMICROELECTRONICS

27 / 103 page

DocID024295 Rev 5

27/103

STM32L100C6 STM32L100R8/RB

Functional overview

3.14.5

Window watchdog (WWDG)

The window watchdog is based on a 7-bit down-counter that can be set as free-running. It

can be used as a watchdog to reset the device when a problem occurs. It is clocked from

the main clock. It has an early warning interrupt capability and the counter can be frozen in

debug mode.

3.15

Communication interfaces

3.15.1

I²C bus

Up to two I²C bus interfaces can operate in multimaster and slave modes. They can support

standard and fast modes.

They support dual slave addressing (7-bit only) and both 7- and 10-bit addressing in master

mode. A hardware CRC generation/verification is embedded.

They can be served by DMA and they support SM Bus 2.0/PM Bus.

3.15.2

Universal synchronous/asynchronous receiver transmitter (USART)

All USART interfaces are able to communicate at speeds of up to 4 Mbit/s. They provide

hardware management of the CTS and RTS signals and are ISO 7816 compliant. They

support IrDA SIR ENDEC and have LIN Master/Slave capability.

All USART interfaces can be served by the DMA controller.

3.15.3

Serial peripheral interface (SPI)

Up to two SPIs are able to communicate at up to 16 Mbits/s in slave and master modes in

full-duplex and half-duplex communication modes. The 3-bit prescaler gives 8 master mode

frequencies and the frame is configurable to 8 bits or 16 bits. The hardware CRC

generation/verification supports basic SD Card/MMC modes.

Both SPIs can be served by the DMA controller.

3.15.4

Universal serial bus (USB)

The STM32L100C6 and STM32L100R8/RB devices embed a USB device peripheral

compatible with the USB full speed 12 Mbit/s. The USB interface implements a full speed

(12 Mbit/s) function interface. It has software-configurable endpoint setting and supports

suspend/resume. The dedicated 48 MHz clock is generated from the internal main PLL (the

clock source must use a HSE crystal oscillator).

STM32L100C6 データシート(PDF) 27 Page - STMicroelectronics

STM32L100C6 データシート(HTML) 27 Page - STMicroelectronics

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

データシートダウンロード