9

STM32F334 BLOCK DIAGRAM

Connectivity

2x USART + 1 UART

LIN, smartcard, IrDA,

modem control

IR transmitter

1x I²C

1x CAN 2.0B

1x SPI

72 MHz

CPU

JTAG/SW debug/ETM

Nested Vector

Interrupt

Controller (NVIC)

Floating Point Unit

(FPU)

Analog

2x 12-bit ADC

21 channels / 5 MSPS

3x Comparators (25 ns)

3x 12-bit DAC with

basic timers

1x Programmable

Gain Ampliers (PGA)

Temperature sensor

System

RTC/AWU

Power supply

1.8 V regulator

POR/PDR/PVD

Internal RC oscillators

40 kHz + 8 MHz

Clock control

PLL

2x watchdogs

(independent and

window)

Cyclic redundancy

check (CRC)

Xtal oscillators

32 kHz + 4 to 32 MHz

1x SysTick timer

Touch-sensing

controller 18 keys

25/37/51 I/Os

Control

1x 16-bit (144 MHz)

motor control PWM

Synchronized AC timer

1x 32-bit timers

4x 16-bit timers

10 ch. HRTIM (217 ps)

7-channel DMA

AHB bus matrix

4-Kbyte CCM-SRAM

20 bytes backup data

64-Kbyte Flash memory

Up to 12-Kbyte SRAM

Memory Protection Unit

(MPU)

Interconnect matrix

APPLICATION TARGET

STM32F334 devices greatly simplify

digital control of complex power‑

supply topologies used in:

•

Data servers

•

Telecom infrastructure

•

Wireless charging points

•

Lighting

•

Welding

•

Industrial power supplies

•

Digital switch mode power

supplies (D‑SMPS)

COMPLEX WAVEFORM BUILDING AND MULTI-EVENT HANDLING (FROM HRTIM) - EXAMPLE

Timer B counter

Timer A counter

External Event 1

External Event 2

TA1 PWM output

Window

Set on TimerA roll-over

Reset on TimerA Compare 1

Set on TimerB Compare 1

Reset on External Event 2 after delay

Toggle on External Event 1 rising edge

during Timer B-dened window

Set on TimerB Compare 4

From HRTIM

Auto-delayed mode

External event windowing

Timings

dened in

mutliple

timers