Description

The STM32F20x family is based on the high-performance ARM Cortex-M3 32-bit RISC core operating at a frequency of up to 120 MHz. The family incorporates high-speed embedded memories (Flash memory up to 1 Mbyte, up to 128 Kbytes of system SRAM), up to 4 Kbytes of backup SRAM, and an extensive range of enhanced I/Os and peripherals connected to two APB buses, three AHB buses and a 32-bit multi-AHB bus matrix.

The devices also feature an adaptive real-time memory accelerator (ART Accelerator) which allows to achieve a performance equivalent to 0 wait state program execution from Flash memory at a CPU frequency up to 120 MHz. This performance has been validated using the CoreMark benchmark.

Features

•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
(48 Mbyte/s max.)

•CRC calculation unit

•96-bit unique ID

•Core: Arm® 32-bit Cortex®-M3 CPU (120 MHz max) with Adaptive real-time accelerator (ART
Accelerator™) allowing 0-wait state execution
performance from Flash memory, MPU,
150 DMIPS/1.25 DMIPS/MHz (Dhrystone 2.1)

•Memories
– Up to 1 Mbyte of Flash memory
– 512 bytes of OTP memory
– Up to 128 + 4 Kbytes of SRAM
– Flexible static memory controller that
supports Compact Flash, SRAM, PSRAM,
NOR and NAND memories
– LCD parallel interface, 8080/6800 modes

•Clock, reset and supply management
– From 1.8 to 3.6 V application supply + I/Os
– POR, PDR, PVD and BOR
– 4 to 26 MHz crystal oscillator
– Internal 16 MHz factory-trimmed RC
– 32 kHz oscillator for RTC with calibration
– Internal 32 kHz RC with calibration

•Low-power modes
– Sleep, Stop and Standby modes
– VBAT supply for RTC, 20 × 32 bit backup
registers, and optional 4 Kbytes backup
SRAM

•3 × 12-bit, 0.5 µs ADCs with up to 24 channels
and up to 6 MSPS in triple interleaved mode

•2 × 12-bit D/A converters

•General-purpose DMA: 16-stream controller
with centralized FIFOs and burst support

•Up to 17 timers
– Up to twelve 16-bit and two 32-bit timers,
up to 120 MHz, each with up to four
IC/OC/PWM or pulse counter and
quadrature (incremental) encoder input

•Debug mode: Serial wire debug (SWD), JTAG,
and Cortex®-M3 Embedded Trace Macrocell™

•Up to 140 I/O ports with interrupt capability:
– Up to 136 fast I/Os up to 60 MHz
– Up to 138 5 V-tolerant I/Os

•Up to 15 communication interfaces
– Up to three I2C interfaces (SMBus/PMBus)
– Up to four USARTs and two UARTs
(7.5 Mbit/s, ISO 7816 interface, LIN, IrDA,
modem control)
– Up to three SPIs (30 Mbit/s), two with
muxed I2S to achieve audio class accuracy
via audio PLL or external PLL
– 2 × CAN interfaces (2.0B Active)
– SDIO interface