参数资料
型号: ST72F652AR4T1
厂商: STMICROELECTRONICS
元件分类: 微控制器/微处理器
英文描述: 8-BIT, FLASH, 12 MHz, MICROCONTROLLER, PQFP64
封装: 10 X 10 MM, TQFP-64
文件页数: 88/160页
文件大小: 979K
代理商: ST72F652AR4T1
ST7265x
33/160
POWER SUPPLY MANAGEMENT (Cont’d)
Figure 23. Power Supply Management: Dual Power Supply
USB MODE
STAND-ALONE
RESET
S/W
STAND-ALONE
USBVDD
VDD pin
PLL
48 MHz
CLOCK
CRYSTAL (12MHz)
PLL
CRYSTAL (12MHz)
S/W Reset
PLG INTERRUPT
ON
SUPPLY
USBVIT+
REQUEST
USBVIT-
STATUS
PROCESS ING
12
1. Interrupt processing
2. Finish current processing
PROCESS.
STAND -ALONE
1 2
S/W Reset
PROCESSIN G
STA ND-ALONE MODE
USBEN
HI-Z
voltage
SUPPLY
VOLTAGES
SOURCE
PLL OFF
PLL ON
PLL OFF
STABLE 48 MHz
UNDE
SIGNAL
ON/OF F
FINED3
NO CLOCK
3. PLL start-up time (automatically controlled by hardware following a software reset)
USB MODE
NO CLOCK
VPLLmin48
RESET
VIT+(LVD)
VIT-(LVD)
RST
4
4. PLL running with frequency in the range of 48 to 24 MHz (see section 13.3.3 on page 126)
1
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