Led Electrical Characteristics; Memory; Power Requirements; Power Output - Measurement Computing USB-231-OEM User Manual

USB-231-OEM User's Guide

LED electrical characteristics

Parameter
Output Low Voltage
External pull-up voltage
Maximum sinking current

Memory

Parameter
Data FIFO
Non-volatile memory

Power requirements

Parameter
From USB
Idle USB current
Maximum load USB current
Note 2: A typical bus-powered hub provides 100 mA on its USB lines. The USB-231-OEM does not work on a bus-
powered hub.
Note 3: The maximum power draw from all output terminals should be kept under 0.9 W to avoid overloading the USB
port

Power output

Parameter
Output voltage
Maximum current
Overcurrent protection
Short circuit current
Overvoltage protection

USB specifications

Parameter
Device type
Device compatibility
Connector type
USB cable type
USB cable length
Table 8.
LED electrical specifications
Condition
I = 8 mA
OL
I = 18 mA
OL
Table 9 Memory specifications
Specification
2,047 samples (4096 bytes)
Up to 256 kB microcontroller integrated Flash

2 kB microcontroller integrated EEPROM)

Table 10. Power specifications
Specification
4.50 to 5.25 VDC (Note 2)
165 mA
<500 mA (Note 3)
Table 11. External voltage specifications
Specification
5 V, ±3%
150 mA
200 mA
50 mA
±20 V
Table 12. USB specifications
Specification
USB 2.0 full speed (12 Mb/s)
USB 1.1, USB 2.0
USB micro-B receptacle
A-micro-B cable, UL type AWM 2725 or equivalent (28 AWG × 2C + 28 AWG × 2C +
AB)
3 m (9.84 ft) max
23
Specification
0.4 V max
1.2 V typ
5.25 V max
18 mA max
Specifications