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AN2633 数据表(PDF) 4 Page - STMicroelectronics

部件名 AN2633
功能描述  STR91xFA low power management and power consumption
PDF  48 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

AN2633 数据表(HTML) 4 Page - STMicroelectronics

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Power supply and clocks
AN2633
4/48
1
Power supply and clocks
1.1
Power supply
1.1.1
Main operating voltages
The STR91xFA requires two separate operating voltage supplies. The CPU and memories
operate from a 1.65 V to 2.0 V on the VDD pins, and the I/O ring operates at 2.7 V to 3.6 V on
the VDDQ pins.
Figure 1.
Power supply overview
I/O Ring
RTC
SRAM
(VDDQ) AVREF_AVDD
AVSS_VSSQ
(3V or 3.3V)
VBATT
(VDDQ)
(1.8V)
Core
A/D converter
VSSQ
VDDQ
VDD
VSS
A/D converter
I/O Ring
RTC
SRAM
Core
VSSQ
VBATT
(VDDQ)
VDD
VSS
(1.8V)
(3V or 3.3V)
AVREF
AVSS
AVDD
(VDDQ)
VDDQ
128-pin, 144-ball devices
80-pin-devices



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