Описание
The DS4830 provides a complete optical control, calibration, and monitor solution based on a low-power, 16-bit, microcontroller core, providing program and RAM data memory. I/O resources include a fast/accurate analog-to-digital converter (ADC), fast comparators with an internal comparison digital-to-analog converter (DAC), 12-bit DACs, 12-bit PWMs, internal and external temperature sensors, fast sample/hold, I2C slave host interface, and a multiprotocol serial master/slave interface. Direct connection of diode-connected transistors, used as remote temperature sensors, is supported as well as expansion to additional external digital temperature sensor ICs using the on-chip master I2C interface. An independent slave I2C interface facilitates communication to a host microprocessor in addition to password-protected in-system reprogramming of the on-chip flash. Firmware development is supported by third-party highly versatile C-compilers and development software that programs flash and performs in-circuit debug through the integrated JTAG interface and associated hardware.
- 16-Bit Low-Power Microcontroller
- 36 kWords Total Program Memory
- 32 kWords Flash Program Memory
- 4 kWords ROM Program Memory
- 12-Bit Buffered Voltage DACs
- Internal or External Reference
- Boost/Buck DC-DC Control with Support for 7-Bit to 12-Bit Resolution and 1MHz Switching Frequency
- Supports 4-Channel TECC H-Bridge Control
- 1.6µs per Comparison
- 13-Bit A/D Converter with 26-Input Mux (27ksps)
- Temperature Measurement Analog Front-End
- Internal Temperature Sensor, &plusnm;3°C
- 0.0625°C Resolution
- Supports Two External Temperature Sensors
- Differential Rail-Rail Inputs
- 4% Accurate from 0°C to +50°C
