Datasheet

Description STM32F334x4 STM32F334x6 STM32F334x8
12/121 DocID025409 Rev 8
Figure 1. STM32F334x4/6/8 block diagram
1. AF: alternate function on I/O pins.
MSv31953V3
@VDD33
EXT.IT
WinWATCHDOG
JTDI
JTCK-SWCLK
JTMS-SWDAT
JTRST
JTDO-TRACESWO
NRESET
V
DD33
=2 to 3.6V
up to 16 lines
AHB2
WKUP
F
max
= 72MHz
V
SS
V
REF+
GP DMA1
XTAL OSC
4-32MHz
OSC_IN
OSC_OUT
OSC32_OUT
OSC32_IN
AHBPCLK
HCLK
APBP1CLK
V
DD18
POWER
Backup interface
as AF
BusMatrix
CORTEX M4 CPU
USART1
USART3
7 channels
SCL,SDA,SMBA
as AF
RX,TX, CTS, RTS,
Temp sensor
V
REF-
PD2
4 Channels, ETR
FCLK
Standby
Ind. WDG32K
SUPPLY
@VDD33
VDDA
VSSA
V
BAT
=
1.65 to 3.6V
SmartCard as AF
RX,TX, CTS, RTS,
SmartCard as AF
RX,TX, CTS, RTS,
SmartCard as AF
NVIC
SPI1
MOSI,MISO,
SCK,NSS as AF
interface
@VDDA
SUPERVISION
Reset
Int
AHB2
APB2
APB1
POR
ANTI-TAMP
RESET&
CLOCK
CTRL
APBP2CLK
DAC1_OUT1 as AF
DAC2_OUT1 as AF
USARTCLK
I2CCLK
ADC1/ADC2
CRC
AHB DECODER
GPIOPORTA
as AF
15
TIM16
TIM17
2 channels,
1 channel,
1 channel,
1 compl. channel,
BRK as AF
1 compl. channel,
BRK as AF
1 compl. channel,
BRK as AF
TIM6
@VDDA
6 Groups of
4 Channels as AF
TIM1
4 channels,
3 compl. channel,
ETR, BRK as AF
FPU
TPIU
SWJTAG
GPIOPORTB
GPIOPORTC
GPIOPORTD
PC[15:0]
PB[15:0]
PA[15:0]
Ibus
Dbus
System
bus
Flash 64KB
64 bits
Flash interface
Obl
Touch Sensing
Controller
TIM15
IF
12bitADC1
IF
IF
12bitADC2 IF
@VDDA
VOLT. REG.
3.3V TO 1.8V
POR / PDR
PVD
RC HS 8MHz
RC LS
PLL
XTAL 32kHz
RTC
AWU
Backup
reg (20B)
TIM3
GP Comparator 2
IF
12-bit DAC1
channel 1
IF
I2C1
USART2
@VDDA
Dbus
SRAM
12KB
CAN_TX
CAN_RX
APB2: Fmax = 72 MHz
APB1: Fmax = 36 MHz
4 Channels, ETR
as AF
TIM2 (32-bit/PWM)
TIM7
HRTIM1
PF[1:0]
GPIOPORTF
5 fault inputs as AF
10 PWM outputs
10 ext. event inputs
1 synchro. input
1 synchro. output
12-bit DAC2
channel 1
IF
DAC1_OUT2 as AF
IF
12-bit DAC1
channel 2
IF
GP Comparator 4
GP Comparator 6
INM, INP, OUT as AF
CCM SRAM
4KB
BxCAN
SYSCFG CTL
INM, INP, OUT as AF
Op-amp2
IF
@VDDA
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