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. Applications * Optical Transceivers: XFP, SFP, SFP+, QSFP, 40G, 100G * PON Diplexers and Triplexers: GPON, 10GEPON, XPON OLT, ONU * 16-Bit Low-Power Microcontroller * 36 kWords Total Program Memory * 32 kWords Flash Program Memory * 4 kWords ROM Program Memory * 1 kWords Data RAM * 8 DAC Channels * 12-Bit Buffered Voltage DACs * Internal or External Reference * 10 PWM Channels * 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 * 8-Bit Fast Comparator with 16-Input Mux * 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 * 31 GPIO Pins * Maskable Interrupt Sources * Internal 20MHz Oscillator, CPU Core Frequency 10MHz * 4% Accurate from 0°C to +50°C * Up to 133MHz External Clock for PWM and Timers * Slave Communication Interface: SPI or 400kHz I2C-Compatible 2-Wire * Master Communication Interface: SPI, 400kHz I2C-Compatible, or Maxim 3-Wire Laser Driver * I2C and JTAG Bootloader * Two 16-Bit Timers * 2.97V to 3.63V Operating Voltage Range * Brownout Monitor * JTAG Port with In-System Debug and Programming * Low Power Consumption (16mA) with All Analog Active