资料介绍
Many data acquisition systems require both a visual display and a
computer interface. The TC7135 from Microchip Technology is a
4-1/2 digit Analog-to-Digital converter (ADC) which can easily
provide both of these functions. The TC7135’s multiplexed BCD
outputs interface easily to low cost LED or LCD decoder/drivers,
such as the TC7211A. Also, the TC7135’s data outputs simplify
computer interfacing.
This application note will present both the hardware and software
required to interface the TC7135 to a microprocessor. The circuit
was developed for a 6502µP and 6522 I/O port, but the design can
easily be modified for other µPs and I/O ports. AN16
TC7135 Microprocessor Interface
Low Roll-Over Error ...................................... ± 1 count
Author: Wes Freeman,
Microchip Technology, Inc. Valid Polarity at 000 reading (the + and
我要上传