Boards Home > ISA Bus Data Acquisition Boards-TMC-10
10-channel timer/counter board
» Features
■ On-board four 8254 timer/counter chips
■ Eight independent 16-bit timer/counter
■ Eight external clock inputs
■ Eight external gate control signals
■ Two cascaded 32-bit timer/counter
■ 11 interrupt levels, jumper-selectable
■ Programmable Interrupt sources :
COUT6, COUT9, COUT12 or external
■ Two internal clock sources : 8M/1.6M, 0.8M/80K
■ 8-bit general purpose digital output
» Functional Description
The TMC-10 is a general-purpose timer/counter and digital I/O board.
It provides eight 16-bit timer/counter channels, two cascaded 32-bit timer/counter channels, 8-channel digital output, and two internal clock sources (8M/1.6M; 0.8M/80K) which are jumper-selectable.
The external clock input pin and gate control pin may be used as general- purpose TTL-level DI.
Four 8254 chips provide various powerful timer/counter function modes to match the industrial and laboratory applications.
» Applications
● Event Counting
● Wave Generator
● Frequency Measurement
● Pulse Width Measurement
● Time-delay generation
● Watchdog Timer
● Industrial Automation
» Specifications Logic inputs and outputs
● Input logic high voltage : 2.0V min / 5.0V max
● Input logic low voltage : -0.5V min / 0.8V max
● Input load current : -0.45 mA min / +70μA
● Output sink current : +24 mA max
● Output source current : -15 mA
● All outputs and inputs are TTL CompatibleFeatures General Specifications
● I/O connector : one 37-pin D-Sub female
● Power requirements : +5V @ 500 mA typical
● Operating temperature : 0°C ~ 60°C
● Operating humidity : 0 ~ 90% non-condensing
● Storage temperature : -20°C ~ 80°C
● Dimensions : 121 mm x 106 mm
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TMC-10 PIN View
