Microcontroller; Indicator Leds; Power; General - Measurement Computing USB-7202 User Manual

USB-7202 User's Guide

Microcontroller

Parameter
Type

Indicator LEDs

Parameter
Power LED (top)
Status LED
OEM power

Power

Parameter
Supply current
+5V power available
USER
(Note 6)
Output current (Note 7)
Note 5: This is the total current requirement for the USB-7202, which includes up to 10 mA for the status LED.
Note 6: "Self-powered hub" refers to a USB hub with an external power supply. Self-powered hubs allow a connected
USB device to draw up to 500 mA. "Root port hubs" reside in the computer USB host Controller. The USB
port(s) on your computer are root port hubs. All externally-powered root port hubs (desktop computers) provide
up to 500 mA of current for a USB device. Battery-powered root port hubs provide 100 mA or 500 mA,
depending upon the manufacturer. A laptop computer that is not connected to an external power adapter is an
example of a battery-powered root port hub. If your laptop computer is constrained to the 100 mA maximum,
you need to purchase a self-powered hub.
Note 7: This is the total amount of current that can be sourced from the +5V

General

Parameter
Device type
Device compatibility
DEFAULTS for
programmable options and
"DEV:RESET/DEFAULT"
message
Table 10. Microcontroller specifications
Specification
High performance 32-bit RISC microcontroller
Table 11. Indicator LED specifications
Specification
On when the device microcontroller has power and is configured.
Blinks in boot loader mode.
On in boot loader mode.
Blinks to indicate USB communications.
OEM connector; LED sink current up to 5 mA per LED @ 5 V
Table 12. Power specifications
Conditions
USB enumeration
Continuous mode
Connected to self-powered hub

Connected to externally-powered root port hub

Table 13. General specifications
Specification
USB 2.0 (full-speed)
USB 1.1, USB 2.0
AInScan Low channel = 0
High channel = 0
Samples = 1000
Rate = 1000
Range = ±10 V
Pacer = Disabled (Slave)
Transfer mode = BlockIO
Trigger = Disabled
Status = Idle
AITrig Trigger polarity = Rising
CTR Value = 0
22
max
Specification
< 100 mA
150 mA (Note 5)
4.0 V min, 5.25 V max
300 mA max
and digital outputs.
USER
Specifications