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參數(shù)資料
| 型號(hào)： | STM32W108HBU7 |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | SPECIALTY MICROPROCESSOR CIRCUIT, QCC40 |
| 封裝： | 6 X 6 MM, 0.50 MM PITCH, ROHS COMPLIANT, VFQFPN-40 |
| 文件頁(yè)數(shù)： | 127/198頁(yè) |
| 文件大小： | 2871K |
| 代理商： | STM32W108HBU7 |
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System modules
STM32W108CB, STM32W108HB
Doc ID 16252 Rev 3
6.1
Power domains
The STM32W108 contains three power domains:
●
An "always on domain" containing all logic and analog cells required to manage the
STM32W108's power modes, including the GPIO controller and sleep timer. This
domain must remain powered.
●
A "core domain" containing the CPU, Nested Vectored Interrupt Controller (NVIC), and
peripherals. To save power, this domain can be powered down using a mode called
deep sleep.
●
A "memory domain" containing the RAM and flash memories. This domain is managed
by the power management controller. When in deep sleep, the RAM portion of this
domain is powered from the always-on domain supply to retain the RAM contents while
the regulators are disabled. During deep sleep the flash portion is completely powered
down.
6.1.1
Internally regulated power
The preferred and recommended power configuration is to use the internal regulated power
supplies to provide power to the core and memory domains. The internal regulators
(VREG_1V25 and VREG_1V8) generate nominal 1.25 V and 1.8 V supplies. The 1.25 V
supply is internally routed to the core domain and to an external pin. The 1.8 V supply is
routed to an external pin where it can be externally routed back into the chip to supply the
memory domain. The internal regulators are described in Section 7: Integrated voltage
When using the internal regulators, the always-on domain must be powered between 2.1 V
and 3.6 V at all four VDD_PADS pins.
When using the internal regulators, the VREG_1V8 regulator output pin (VREG_OUT) must
be connected to the VDD_MEM, VDD_PADSA, VDD_VCO, VDD_RF, VDD_IF, VDD_PRE,
and VDD_SYNTH pins.
When using the internal regulators, the VREG_1V25 regulator output and supply requires a
connection between both VDD_CORE pins.
6.1.2
Externally regulated power
Optionally, the on-chip regulators may be left unused, and the core and memory domains
may instead be powered from external supplies. For simplicity, the voltage for the core
domain can be raised to nominal 1.8 V, requiring only one external regulator. Note that if the
core domain is powered at a higher voltage (1.8 V instead of 1.25 V) then power
consumption increases. A regulator enable signal, REG_EN, is provided for control of
external regulators. This is an open-drain signal that requires an external pull-up resistor. If
REG_EN is not required to control external regulators it can be disabled (see Section 8.1.3:
Using an external regulator requires the always-on domain to be powered between 1.8 V
and 3.6 V at all four VDD_PADS pins.
When using an external regulator, the VREG_1V8 regulator output pin (VREG_OUT) must
be left unconnected.
When using an external regulator, this external nominal 1.8 V supply has to be connected to
both VDD_CORE pins and to the VDD_MEM, VDD_PADSA, VDD_VCO, VDD_RF, VDD_IF,
VDD_PRE and VDD_SYNTH pins.
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| STM32WC-RFCKIT | 功能描述:Zigbee/802.15.4開(kāi)發(fā)工具 STM32W Low-Cost RF STM32F103 MCU Kit RoHS:否 制造商:Silicon Labs 產(chǎn)品:Development Kits 工具用于評(píng)估:EM35x 頻率:2.4 GHz 接口類型:USB 工作電源電壓: |
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