USB-3114 User's Guide
Specifications
21
Counter
Table 8. CTR I/O specifications
Parameter
Conditions
Specification
Pin name
CTR
Number of channels
1
Resolution
32-bits
Counter type
Event counter
Input type
TTL, rising edge triggered
Counter/timer read/writes rates
(software paced)
Counter read
System dependent, 33 to 1000 reads per second.
Counter write
System dependent, 33 to 1000 reads per second.
Schmidt trigger hysteresis
20 mV to 100 mV
Input leakage current
±1.0 µA typ.
Input frequency
1 MHz max.
High pulse width
500 nS min.
Low pulse width
500 ns min.
Input high voltage
4.0 V min, 5.5 V absolute max
Input low voltage
1.0 V max, –0.5 V absolute min
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 8)
Quiescent current
355 mA typ.
+5V user output voltage range (Note 9)
Available at terminal block pin 56
4.5 V min, 5.25 V max.
+5V user output current (Note 10)
Available at terminal block pin 56
10 mA max.
AC Power Adapter Requirements (Note 11)
Output voltage
5V, ±5%
Output wattage
10 watts
Power jack configuration
Two conductor
Power jack barrel diameter
6.3 mm
Power jack pin diameter
2.0 mm
Power jack polarity
Center positive
Summary of Contents for USB-3114
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