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ST40RA 数据表(PDF) 43 Page - STMicroelectronics |
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ST40RA 数据表(HTML) 43 Page - STMicroelectronics |
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43 / 94 page  7 Electrical specifications ST40RA 43/94 STMicroelectronics ADCS 7260755H 7 Electrical specifications 7.1 DC absolute maximum ratings 7.1.1 Fmax clock domains Symbol Parameter Min Max Units Notes VDDCORE Core DC supply voltage 2.1 V a,b a. Stresses greater than those listed under Table 20: Absolute maximum ratings may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operating sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended period may effect reliability. b. All I/O pins are 3.3 V tolerant except CLKIN, LPCLKIN, CLKOSC and LPCLKOSC. VDDIO I/O DC supply voltage 4.0 V VDDRTC RTC DC supply voltage 2.1 V VIO Voltage on input, output and bidirectional pins. GND -0.6 VDDIO + 0.6 V VIORTC Voltage on input pins on VDDRTC supply (LPCLKIN, LPCLKOSC) GND -0.6 VDDRTC + 0.6 V VIOCLK Voltage on CLKIN and CLKOSC pins GND -0.6 VDDCORE + 0.6 V IO DC output current 25 mA TS Storage temperature (ambient) -55 125 deg C TA Temperature under bias (ambient) -55 125 deg C Table 20: Absolute maximum ratings Function clock ST40RA200XH6 ST40RA166XH6 ST40RA150XH6 CPU_CLK 200 MHz 166 MHz 150 MHz STBUS_CLK 100 MHz 111 MHz 100 MHz PER_CLK 50 MHz 55 MHz 50 MHz LMI_CLK 133 MHz 100 MHz 100 MHz EMI_SS_CLK 100 MHz 111 MHz 100 MHz EMI_EXT 100 MHz 100 MHz 100 MHz PCI_EXT 66 MHz 66 MHz 66 MHz Table 21: Fmax clock domains |
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