Measurement-computing USB-3101 Manuel d'utilisateur télécharger pdf (Page 21)

USB-3101 User's Guide Specifications

Memory

Table 9. Memory specifications

EEPROM

256 bytes

EEPROM configuration

Address range

Access

Description

0x000-0x0FF

Read/write

256 bytes user data

Microcontroller

Table 10. Microcontroller specifications

Type

High performance 8-bit RISC microcontroller

Program memory

16,384 words

Data memory

2,048 bytes

Power

Table 11. Power specifications

Parameter

Conditions

Specification

Supply current

USB enumeration

< 100 mA

Supply current (Note 7)

Quiescent current

140 mA typ.

+5V user output voltage range (Note 8)

Available at terminal block pin 56

4.5 V min, 5.25 V max.

+5V user output current (Note 9)

Available at terminal block pin 56

10 mA max.

Note 7: This is the total quiescent current requirement for the USB-3101 which includes up to 10 mA for

the status LED. This does not include any potential loading of the digital I/O bits, +5V user

terminal, or the VOUTx outputs.

Note 8: Output voltage range assumes USB power supply is within specified limits.

Note 9: This refers to the total amount of current that can be sourced from the +5V user terminal (pin 56)

for general use. This specification also includes any additional contribution due to DIO loading.

USB specifications

Table 12. USB specifications

USB device type

USB 2.0 (full-speed)

USB device compatibility

USB 1.1, 2.0

USB cable length

3 meters max.

USB cable type

A-B cable, UL type AWM 2527 or equivalent (min 24 AWG VBUS/GND,

min 28 AWG D+/D-).

Environmental

Table 13. Environmental specifications

Operating temperature range

0 to 70 °C

Storage temperature range

-40 to 85 °C

Humidity

0 to 90% non-condensing

1 2 ... 16 17 18 19 20 21 22 23 24

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