How does the RCC (clock tree) compare? On Wed, Apr 15, 2020, 5:11 PM Nathan Hartman <hartman.nat...@gmail.com> wrote:
> On Wed, Apr 15, 2020 at 4:08 PM Gregory Nutt <spudan...@gmail.com> wrote: > > This document address migration from F1 to F3 and addresses all major > > differences between F1 and F3: AN4228, Application note, Migrating from > > STM32F1 Series to STM32F3 Series microcontrollers. Table 6 address every > > peripheral. > > Ok, I'll look at that. > > Meanwhile... So I've been studying, toward making a decision, whether > to try implementing this in the stm32 directory or create a new one > for stm32g4... I probably won't know which is better and which is less > (or more!) work until I actually start writing code. > > As I'm looking at STM32F3 parts we support and compare to STM32G474, > it seems the STM32F334 has the most similarities to this new part. > > Comparison: > > (At least what I know so far...) > > Both have GPIO ports ABCF. STM32G474CxT adds port G but only for > PG10-NRST. That is, the reset pin can be used as a GPIO. > > Analog: the STM32G474Cxt is heavy on analog features with much more > ADC, DAC, COMP, and OPAMP peripherals and pins than the STM32F3. These > features are obviously new IP as the ADC adds Hardware Oversampling, > IO Voltage Booster, Gain Compensation, Bulb Sampling, Sampling Time > Control Trigger, Dual Interleaved Sampling, new Analog Watchdog > features. The DAC adds Sample and Hold, and also Internal DACs that > can be connected to other internal peripherals, e.g., to a COMP or > OPAMP. And there's much more. [1] > > Timers: Both have HRTIM, but the STM32F334 has HRTIM IP version 1.0 > while STM32G474Cxt has HRTIM IP version 2.0. This adds various > features and capabilities, described in [2]. Also, the G4 more of the > regular resolution timers. > > Communication: STM32F334 has CAN. STM32G474CxT has FDCAN1, FDCAN2, > FDCAN3. STM32G474CxT has LPTIM, LPUART, SAI, USB. Also, more I2C and > SPI. > > Side-by-side comparison of Ports, Pins, and Peripherals: > > Ports: > =============================== > STM32G474CxTx | STM32F334CxTx > =============================== > PORT_A | PORT_A > PORT_B | PORT_B > PORT_C | PORT_C > PORT_F | PORT_F > PORT_G | - x - > ------------------------------- > > > Pins: > =============================== > STM32G474CxTx | STM32F334CxTx > =============================== > PA0 | PA0 > PA1 | PA1 > PA2 | PA2 > PA3 | PA3 > PA4 | PA4 > PA5 | PA5 > PA6 | PA6 > PA7 | PA7 > PA8 | PA8 > PA9 | PA9 > PA10 | PA10 > PA11 | PA11 > PA12 | PA12 > PA13 | PA13 > PA14 | PA14 > PA15 | PA15 > ------------------------------- > PB0 | PB0 > PB1 | PB1 > PB2 | PB2 > PB3 | PB3 > PB4 | PB4 > PB5 | PB5 > PB6 | PB6 > PB7 | PB7 > PB8-BOOT0 | PB8 > PB9 | PB9 > PB10 | PB10 > PB11 | PB11 > PB12 | PB12 > PB13 | PB13 > PB14 | PB14 > PB15 | PB15 > ------------------------------- > PC13 | PC13 > PC14-OSC32_IN | PC14-OSC32_IN > PC15-OSC32_OUT | PC15-OSC32_OUT > ------------------------------- > PF0-OSC_IN | PF0-OSC_IN > PF1-OSC_OUT | PF1-OSC_OUT > ------------------------------- > PG10-NRST | - x - > ------------------------------- > > > Peripherals: > =============================== > STM32G474CxTx | STM32F334CxTx > =============================== > ADC1 | ADC1 > ADC2 | ADC2 > ADC3 | - x - > ADC4 | - x - > ADC5 | - x - > - x - | CAN > COMP1 | - x - > COMP2 | COMP2 > COMP3 | - x - > COMP4 | COMP4 > COMP5 | - x - > COMP6 | COMP6 > COMP7 | - x - > CRS | - x - > DAC1 | DAC1 > DAC2 | DAC2 > DAC3 | - x - > DAC4 | - x - > FDCAN1 | - x - > FDCAN2 | - x - > FDCAN3 | - x - > HRTIM1 | HRTIM1 > I2C1 | I2C1 > I2C2 | - x - > I2C3 | - x - > I2C4 | - x - > I2S | - x - > I2S2 | - x - > I2S3 | - x - > IR | IR > LPTIM1 | - x - > LPUART1 | - x - > OPAMP1 | - x - > OPAMP2 | OPAMP2 > OPAMP3 | - x - > OPAMP4 | - x - > OPAMP5 | - x - > OPAMP6 | - x - > QUADSPI1 | - x - > RCC | RCC > RTC | RTC > SAI1 | - x - > SPI1 | SPI1 > SPI2 | - x - > SPI3 | - x - > SYS | SYS > TIM1 | TIM1 > TIM15 | TIM15 > TIM16 | TIM16 > TIM17 | TIM17 > TIM2 | TIM2 > TIM20 | - x - > TIM3 | TIM3 > TIM4 | - x - > TIM5 | - x - > TIM8 | - x - > - x - | TSC > UCPD1 | - x - > USART1 | USART1 > USART2 | USART2 > USART3 | USART3 > USB | - x - > ------------------------------- > > References: > > [1] STM32F3 vs STM32G4 Analog: AN5310: > > https://www.st.com/content/ccc/resource/technical/document/application_note/group1/0e/97/a6/8e/6b/bd/49/40/DM00607955/files/DM00607955.pdf/jcr:content/translations/en.DM00607955.pdf > > [2] HRTIM differences: AN4539 Rev4, page 7, and Appendices: > > https://www.st.com/content/ccc/resource/technical/document/application_note/13/d6/48/9d/11/11/4c/08/DM00121475.pdf/files/DM00121475.pdf/jcr:content/translations/en.DM00121475.pdf > > Cheers, > Nathan >
