第10章 Electrical Specifications

10.1. Absolute Maximum Ratings

表10.1 Absolute Maximum Ratings

ItemSymbolMin.Max.UnitNotes
Power Supply VoltageVIN-0.326.4V 
Input / Output VoltageVI,VO-0.3OVDD+0.3V

OVDD=VCC_3.3V_IO,VCC_3.3V

@CON1,CON2,CON9,CON10

-0.33.63V

USB_HS_DP,USB_HS_DM

@CON1,CON2,CON10

Operating Temperature Range[a][b]Topr-1060With no condensation

[a] Board only (without a case): -20°C. to 70°C.

[b] This temperature is when power consumption is limited, such as by stopping communication of the 3G/LTE module at high temperature.


[警告]

Absolute maximum ratings are values that should not be exceeded under any use or test conditions, even just momentarily. Please factor in a margin against these values during use.

10.2. Recommended Operating Conditions

表10.2 Recommended Operating Conditions

ItemSymbolMin.Typ.Max.UnitNotes
Power Supply VoltageVIN81226.4V 
Ambient Operating Temperature[a]Ta-102560With no condensation

[a] This temperature is when power consumption is limited, such as by stopping communication of the 3G/LTE module at high temperature.


[警告]

When using the AC adapter (OP-AC12V5-00) when re-powering, wait at least 3 seconds before turning on the power.

When turning on the power using a power supply unit other than the above AC adapter, please do so with a monotonically increasing supply. Also, when re-powering, make sure to first turn the power off (5V or less for at least 10ms) and then turn it on again.

10.3. Input / Output Interface Electrical Specifications

表10.3 Input / Output Interface Power Supply Electrical Specifications

ItemSymbolMin.Typ.Max.UnitNotes
Power Supply Voltage

VCC_5V

CON1_USB_VBUS

CON2_USB_VBUS

4.7555.25V 

VCC_3.3V

VCC_3.3V_IO

3.1353.33.465V 

表10.4 Input / Output Interface Electrical Specifications (OVDD = VCC_3.3V, VCC_3.3V_IO)[16]

ItemSymbolMin.Max.UnitNotes
High-level output voltageVOH0.8xOVDDOVDDVIOH = -1.8mA, -3.6mA, -7.2mA, -10.8mA
Low-level output voltageVOL00.2×OVDDVIOL = 1.8mA, 3.6mA, 7.2mA, 10.8mA
High-level input voltageVIH0.7×OVDDOVDD+0.3V 
Low-level input voltageVIL-0.30.3×OVDDV 
Input leakage current (no Pull-up/Pull-down)IIN-55μA 
Pull-up resistance (5K_PU)-4.85.3 
Pull-up resistance (47K_PU)-45.849.8 
Pull-up resistance (100K_PU)-101105 
Pull-up resistance (100K_PD)-101108 

[16] Excluding pin 9 (LED1_CTRL) of the WWAN expansion interface


表10.5 WWAN Expansion Interface Pin 9 (LED1_CTRL) Electrical Specifications

ItemSymbolMin.Max.UnitNotes
High-level input voltageVIH1.45.25V 
Low-level input voltageVIL-0.30.3V 

10.4. Power Supply Circuit Structure

The structure of the power supply circuit of Armadillo-IoT is as follows. The input voltage from the power input interface 1 (CON 14) or the power input interface 2 (CON 15) is converted to each required voltage by the power supply IC and supplied to the internal circuits and each interface. Please design the connection of any external equipment and power supplies so as not to exceed the maximum output current value of each interface and switching regulator (DC-DC).

Power Supply Circuit Structure

図10.1 Power Supply Circuit Structure