Memory; Microcontroller; Usb +5V Voltage; Leds - Measurement Computing USB-4301 User Manual

USB-4301 User's Guide

Memory

EEPROM 256 bytes EEPROM memory available for external use.

Microcontroller

Type High performance 8-bit RISC microcontroller

USB +5V voltage

Parameter
USB +5V (VBUS) input voltage range

LEDs

Power LED Indicates that the device's microcontroller has power and is running
Status LED Indicates that the USB is configured; blinks to indicate USB traffic.

Power

Parameter
Supply current (Note 3)
Supply current
User +5V output voltage range
(terminal block pin 8 and 18)
User +5V output current
(terminal block pin 8 and pin 18)
This is the total current requirement for the USB-4301 which includes up to 14 mA for the Power
Note 3:
and Status LEDs, but does not include current sourced from the User +5V output or from the
digital output pins.
Self-Powered Hub refers to a USB hub with an external power supply. Self-powered hubs allow
Note 4:
a connected USB device to draw up to 500 mA.
Root Port Hubs reside in the PC's USB Host Controller. The USB port(s) on your PC are root
port hubs. All externally powered root port hubs (desktop PC's) 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 PC that is not connected to an external power adapter is an example
of a battery-powered root port hub.
Table 4. Memory specifications
Table 5. Microcontroller specifications
Table 6. USB +5V voltage specifications
Conditions
Table 7. USB +5V voltage specifications
Table 8. Power specifications
Conditions
USB enumeration
Maximum load
Connected to self-powered hub. (Note 4)
Bus-powered and connected to a self-powered
hub. (Note 4)
23
Specifications
Specification
4.75 V min. to 5.25 V max.
Specification
100 mA max
302 mA max.
4.75 V min. to
5.25 V max.
10 mA max.