(China (Mainland))
Product Summary
The NAT9914BPD IEEE 488.2 controller chip can perform all the interface functions defined by the IEEE Standard 488.1-1987, and also meets the additional requirements and recommendations of the IEEE Standard 488.2-1987. Connected between the processor and the IEEE 488 bus, the NAT9914BPD provides highlevel management of the IEEE 488 bus, significantly increases the throughput of driver software, and simplifies both the hardware and software design. The NAT9914BPD performs complete IEEE 488 Talker, Listener, and Controller functions. In addition to its numerous improvements, the NAT9914BPD is also completely pin compatible with the TI TMS 9914A and software compatible with the NEC μPD7210 and TI TMS9914A controller chips.
Parametrics
Absolute maximum ratings: (1)Supply voltage, VDD: -0.5 to +7.0 V; (2)Input voltage, VI: -0.5 to VDD +0.5 V; (3)Operating temperature, TOPR: 0 to +70℃; (4)Storage temperature, TSTG: -40 to +125℃.
Features
Features: (1)Pin compatible with TI TMS9914A; (2)Software compatible with NEC μPD7210 or TI TMS9914A controller chips; (3)Low power consumption; (4)Meets all IEEE 488.2 requirements: Bus line monitoring Preferred implementation of requesting service; (5)Will not send messages when there are no Listeners; (6)Performs all IEEE 488.1interface functions; (7)Programmable data transfer rate(T1 delays of 350 ns, 500 ns, 1.1 μs, and 2 μs); (8)Automatic EOS and/or NL message detection; (9)Direct memory access (DMA); (10)Automatically processes IEEE 488: commands and reads; undefined commands; (11)TTL-compatible CMOS device; (12)Programmable clock rate: 20 MHz maximum; (13)Reduces driver overhead; (14)Does not lose a data byte if ATN is asserted while transmitting data.
Diagrams
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NAT9914APL |
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NAT9914BPL |
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