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STM32H747AI Datasheet(PDF) 42 Page - STMicroelectronics |
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STM32H747AI Datasheet(HTML) 42 Page - STMicroelectronics |
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42 / 252 page  Functional overview STM32H747xI/G 32/242 DS12930 Rev 1 The JPEG codec main features are as follows: • 8-bit/channel pixel depths • Single clock per pixel encoding and decoding • Support for JPEG header generation and parsing • Up to four programmable quantization tables • Fully programmable Huffman tables (two AC and two DC) • Fully programmable minimum coded unit (MCU) • Encode/decode support (non simultaneous) • Single clock Huffman coding and decoding • Two-channel interface: Pixel/Compress In, Pixel/Compressed Out • Support for single greyscale component • Ability to enable/disable header processing • Fully synchronous design • Configuration for High-speed decode mode 3.28 Random number generator (RNG) All devices embed an RNG that delivers 32-bit random numbers generated by an integrated analog circuit. 3.29 Timers and watchdogs The devices include one high-resolution timer, two advanced-control timers, ten general- purpose timers, two basic timers, five low-power timers, two watchdogs and a SysTick timer. All timer counters can be frozen in Debug mode. Table 4 compares the features of the advanced-control, general-purpose and basic timers. Table 4. Timer feature comparison Timer type Timer Counter resolution Counter type Prescaler factor DMA request generation Capture/ compare channels Comple- mentary output Max interface clock (MHz) Max timer clock (MHz) (1) High- resolution timer HRTIM1 16-bit Up /1 /2 /4 (x2 x4 x8 x16 x32, with DLL) Yes 10 Yes 480 480 Advanced -control TIM1, TIM8 16-bit Up, Down, Up/down Any integer between 1 and 65536 Yes 4 Yes 120 240 |
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