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Microchip PIC Microcontrollers with 12-bit A/D and Motor Control |
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Company: |
Microchip Technology |
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Category: |
New Products |
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Date: |
12-Sep-1999 |
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| Chandler,
AZ (microcontroller.com)
- Microchip Technology has announced new advanced analog capabilities for
its PIC microcontrollers. Three devices in the PIC16 family now have
high-resolution 10- or 12-bit analog-to-digital (A/D) converters for
enhanced capturing of external analog signals.
The PIC16C717, PIC16C770, and PIC16C771 also feature high-accuracy Capture/Compare/PWM modules, as well as on-chip voltage references. Common features on these PIC16 devices include:
The PIC16C770 and the PIC16C771 both have a 6-channel 12-bit A/D, while the PIC16C717 contains a 6-channel 10-bit A/D. Applications requiring this level of accuracy have typically required an external A/D. No additional external circuitry is required. Precision timing is achieving through a new Capture/Compare/PWM module. At 16-bit resolution, a pulse capture has an accuracy of 12.5ns, with a compare resolution of 200ns. Max PWM frequency is 20KHz at 10-bit resolution. The PWM module has a half-bridge mode and a full-bridge mode. Each of these drivers can be connected to a push-pull driver configuration for precision motor control of AC and DC motors. The on-chip voltage reference (±3% accuracy), derived from an on-chip band gap, can be used to drive the A/D, supplying the high, low, or both references required. It can also be used as an output for rational sensing. Other advanced analog features include a user-programmable brown-out detect (±3%) at 50 µA with four voltage trip points, and a user programmable low voltage detect with 11 setpoints. Applications for these new products include motor control, instrumentation, remote sensing, battery charging, uninterruptible power supply, automotive actuator, data logger, environmental monitoring and medical monitoring. Pricing is as follows at 1,000 unit quantities:
Samples are scheduled to be available October 1999 with production quantities available December 1999. For more information on these products, contact Microchip.
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