Measurement-computing USB-1408FS Manual de usuario Pagina 24

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USB-1408FS User's Guide Specifications
24
Counter section
Table 12. Counter specifications
Parameter
Pin name
Counter type
Number of channels
Input type
Input source
Resolution
Maximum input frequency 1 MHz
High pulse width
Low pulse width
Schmitt trigger hysteresis 1.01 V typ
0.6 V min
1.5 V max
Input high voltage threshold 2.43 V typ
1.9 V min
3.1V max
Input high voltage limit 5.5 V absolute max
Input low voltage threshold 1.42 V typ
1.0 V min
2.0 V max
Input low voltage limit -0.5 V absolute min
0 V recommended min
Non-volatile memory
Table 13. Non-volatile memory specifications
Parameter Specification
EEPROM 1,024 bytes
EEPROM Configuration
Address Range Access Description
0x000 to 0x1FF Read/write 512 bytes user area
0x200 to 0x3FF Read/write with unlock 512 bytes calibration data
Microcontroller
Table 14. Microcontroller specifications
Parameter Specification
Type
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