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STM32WL33C8 데이터시트(PDF) 7 Page - STMicroelectronics

부품명 STM32WL33C8
상세설명  Multiprotocol LPWAN 32-bit MCU Arm® Cortex®-M0 2(G)FSK, 4(G)FSK, ASK, D-BPSK, up to 256KB flash, 32KB SRAM
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
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STM32WL33C8 데이터시트(HTML) 7 Page - STMicroelectronics

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3
Functional overview
3.1
Architecture
The devices embed a sub-GHz RF subsystem that interfaces with a generic microcontroller subsystem using an
Arm Cortex-M0+ core. The main system consists of a 32-bit multilayer AHB bus-matrix interconnect:
•
Three masters:
–
CPU (Cortex® -M0+) core S-bus
–
DMA1
–
Sub-1 GHz radio subsystem
•
Seven slaves:
–
Internal flash memory on CPU (Cortex®-M0+) S bus
–
Internal SRAM0 (16 Kbytes)
–
Internal SRAM1 (16 Kbytes)
–
APB0 peripherals (through an AHB to APB bridge)
–
APB1 peripherals (through an AHB to APB bridge)
–
AHB0 peripherals
–
AHBRF including AHB to APB bridge and Radio peripherals (connected to APB2)
The bus matrix provides access from a master to a slave, enabling concurrent access and efficient operation even
when several high-speed peripherals work simultaneously. This architecture is shown in Figure 2.
Figure 2. STM32WL33xx system architecture
BusMatrix 6x7
BusMatrix 6x7
AHB0
peripherals
ARM
Cortex-M0+
SRAM1
APB0
peripherals
Flash
APB2
LPAWUR
Flash
Controller
APB1
peripherals
DMA
7ch
S0
S1
SRAM0
Radio system
S3
S4
S5
S2
AHB2APB
AHB2APB
AHB2APB
AHB UP Conv
seq
AHB
DOWN conv
STM32WL33xx
Functional overview
DS14221 - Rev 5
page 7/91



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