Product Details
Product Description
Product Description
Description
The STM32F427xx and STM32F429xx devices are based on the high-performance Arm®
Cortex®-M4 32-bit RISC core operating at a frequency of up to 180 MHz. The Cortex-M4
core features a Floating point unit (FPU) single precision which supports all Arm® single
precision data-processing instructions and data types. It also implements a full set of DSP
instructions and a memory protection unit (MPU) which enhances application security.
The STM32F427xx and STM32F429xx devices incorporate high-speed embedded
memories (Flash memory up to 2 Mbyte, up to 256 Kbytes of SRAM), up to 4 Kbytes of
backup SRAM, and an extensive range of enhanced I/Os and peripherals connected to two
APB buses, two AHB buses and a 32-bit multi-AHB bus matrix.
All devices offer three 12-bit ADCs, two DACs, a low-power RTC, twelve general-purpose
16-bit timers including two PWM timers for motor control, two general-purpose 32-bit timers.
They also feature standard and advanced communication interfaces.
•
Up to three I2Cs
•
Six SPIs, two I2Ss full duplex. To achieve audio class accuracy, the I2S peripherals can
be clocked via a dedicated internal audio PLL or via an external clock to allow
synchronization.
•
Four USARTs plus four UARTs
•
An USB OTG full-speed and a USB OTG high-speed with full-speed capability (with the
ULPI),
•
Two CANs
•
One SAI serial audio interface
•
An SDIO/MMC interface
•
Ethernet and camera interface
•
LCD-TFT display controller
•
Chrom-ART Accelerator™.
Advanced peripherals include an SDIO, a flexible memory control (FMC) interface, a
camera interface for CMOS sensors. Refer to Table 2: STM32F427xx and STM32F429xx
features and peripheral counts for the list of peripherals available on each part number.
The STM32F427xx and STM32F429xx devices operates in the –40 to +105 °C temperature
range from a 1.7 to 3.6 V power supply.
The supply voltage can drop to 1.7 V with the use of an external power supply supervisor
(refer to Section 3.17.2: Internal reset OFF). A comprehensive set of power-saving mode
allows the design of low-power applications.
The STM32F427xx and STM32F429xx devices offer devices in 8 packages ranging from
100 pins to 216 pins. The set of included peripherals changes with the device chosen.
These features make the STM32F427xx and STM32F429xx microcontrollers suitable for a
wide range of applications:
•
Motor drive and application control
•
Medical equipment
•
Industrial applications: PLC, inverters, circuit breakers
•
Printers, and scanners
•
Alarm systems, video intercom, and HVAC
•
Home audio appliances
Figure 4 shows the general block diagram of the device family.
Features
• Core: Arm® 32-bit Cortex®-M4 CPU with FPU,
Adaptive real-time accelerator (ART
Accelerator™) allowing 0-wait state execution
from Flash memory, frequency up to 180 MHz,
MPU, 225 DMIPS/1.25 DMIPS/MHz
(Dhrystone 2.1), and DSP instructions
• Memories
– Up to 2 MB of Flash memory organized into
two banks allowing read-while-write
– Up to 256+4 KB of SRAM including 64-KB
of CCM (core coupled memory) data RAM
– Flexible external memory controller with up
to 32-bit data bus: SRAM, PSRAM,
SDRAM/LPSDR SDRAM, Compact
Flash/NOR/NAND memories
• LCD parallel interface, 8080/6800 modes
• LCD-TFT controller with fully programmable
resolution (total width up to 4096 pixels, total
height up to 2048 lines and pixel clock up to
83 MHz)
• Chrom-ART Accelerator™ for enhanced
graphic content creation (DMA2D)
• Clock, reset and supply management
– 1.7 V to 3.6 V application supply and I/Os
– POR, PDR, PVD and BOR
– 4-to-26 MHz crystal oscillator
– Internal 16 MHz factory-trimmed RC (1%
accuracy)
– 32 kHz oscillator for RTC with calibration
– Internal 32 kHz RC with calibration
• Low power
– Sleep, Stop and Standby modes
– VBAT supply for RTC, 20×32 bit backup
registers + optional 4 KB backup SRAM
• 3×12-bit, 2.4 MSPS ADC: up to 24 channels
and 7.2 MSPS in triple interleaved mode
• 2×12-bit D/A converters
• General-purpose DMA: 16-stream DMA
controller with FIFOs and burst support
• Up to 17 timers: up to twelve 16-bit and two 32-
bit timers up to 180 MHz, each with up to 4
IC/OC/PWM or pulse counter and quadrature
(incremental) encoder input
• Debug mode
– SWD & JTAG interfaces
– Cortex-M4 Trace Macrocell™
• Up to 168 I/O ports with interrupt capability
– Up to 164 fast I/Os up to 90 MHz
– Up to 166 5 V-tolerant I/Os
• Up to 21 communication interfaces
– Up to 3 × I2C interfaces (SMBus/PMBus)
– Up to 4 USARTs/4 UARTs (11.25 Mbit/s,
ISO7816 interface, LIN, IrDA, modem
control)
– Up to 6 SPIs (45 Mbits/s), 2 with muxed
full-duplex I2S for audio class accuracy via
internal audio PLL or external clock
– 1 x SAI (serial audio interface)
– 2 × CAN (2.0B Active) and SDIO interface
• Advanced connectivity
– USB 2.0 full-speed device/host/OTG
controller with on-chip PHY
– USB 2.0 high-speed/full-speed
device/host/OTG controller with dedicated
DMA, on-chip full-speed PHY and ULPI
– 10/100 Ethernet MAC with dedicated DMA:
supports IEEE 1588v2 hardware, MII/RMII
• 8- to 14-bit parallel camera interface up to
54 Mbytes/s
• True random number generator
• CRC calculation unit
• RTC: subsecond accuracy, hardware calendar
• 96-bit unique ID
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