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ST90135M4Q6 Fiches technique(PDF) 7 Page - STMicroelectronics |
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ST90135M4Q6 Fiches technique(HTML) 7 Page - STMicroelectronics |
7 / 190 page 7/190 ST90158 - GENERAL DESCRIPTION 1.1.5 Multifunction Timers (MFT) Each multifunction timer has a 16-bit Up/Down counter supported by two 16-bit Compare regis- ters and two 16-bit input capture registers. Timing resolution can be programmed using an 8-bit pres- caler. Multibyte transfers between the peripheral and memory are supported by two DMA channels. 1.1.6 Standard Timer (STIM) The Standard Timer includes a programmable 16- bit down counter and an associated 8-bit prescaler with Single and Continuous counting modes. 1.1.7 Watchdog Timer (WDT) The Watchdog timer can be used to monitor sys- tem integrity. When enabled, it generates a reset after a timeout period unless the counter is re- freshed by the application software. For additional security, watchdog function can be enabled by hardware using a specific pin. 1.1.8 Serial Peripheral Interface (SPI) The SPI bus is used to communicate with external devices via the SPI, or I C bus communication standards. The SPI uses one or two lines for serial data and a synchronous clock signal. 1.1.9 Serial Communications Controllers (SCI) Each SCI provides a synchronous or asynchro- nous serial I/O port using two DMA channels. Baud rates and data formats are programmable. 1.1.10 Analog/Digital Converter (ADC) The ADCs provide up to 8 analog inputs with on- chip sample and hold. The analog watchdog gen- erates an interrupt when the input voltage moves out of a preset threshold. 9 |
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