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Power Supply Monitor Interrupt Bit. And of course, make all connections to the ground plane directly, with datasehet or no trace separating the pin from its via to ground. This means that if a zero output is desired during power-up or power-down transient conditions, then a pulldown resistor must be added to each DAC output.
The ADC clocks are also derived from the PLL clock, with the modulator rate being the same as vatasheet crystal oscillator frequency. Larger current demands can significantly limit output voltage swing.
All registers except the program counter and the four generalpurpose register banks reside in the special function register SFR area. When set to 0 datasueet the user, the internal XRAM is not accessible, and the external data memory is mapped into the lower 2 kBytes of external data memory.
ADuC ADuC ADuC /
Cleared by hardware when the PC vectors to the interrupt service routine only if the interrupt was transitionactivated. This is also the case for use of the extended stack pointer. Cleared by the user to power down the ADC.
The ADuC does not operate if no crystal is present. RI must be cleared by software. External Memory Address A3. Set datqsheet hardware on a Timer 2 overflow. They are not necessary if the op amp is powered from the same supply as the part since in that case the op amp is unable to generate voltages above VDD or below ground. When set to 0 by the user, the internal XRAM is not accessible, and the external data memory is mapped into the lower two kBytes datsaheet external datasheeh memory.
The values written to these bit registers are then used in the next PWM cycle.
ADuC841 Datasheet PDF
avuc843 Cleared by the user to disable the fast interrupt response feature. Indicates the packing option of the model Tube, Reel, Tray, etc. Cleared by the user to use the internal reference. Note that the upper trace in each of these figures is valid only for an output range selection of 0 V-to-AVDD.
Set by the user to enable the 8-bit time interval counter. The maximum resolution of the PWM output is 8 bits. Champion all schools flyer. Increasing the gain coefficient compensates for a smaller analog input signal range and scales the ADC transfer function up, effectively increasing the slope of the transfer function. The bit result and the channel ID datasheet the conversion performed in the previous cycle is written to the external memory. Interrupt Priority Interrupt Vectors The interrupt enable registers are written by the user to enable individual interrupt sources, while the interrupt priority registers avuc843 the user to select one of two priority levels for each interrupt.
In counter function, the TLx register is incremented by a 1-to-0 transition at its corresponding external input pin: This block provides the user with multichannel mux, track-and-hold, on-chip reference, calibration features, and ADC.
An example of this configuration is shown in Figure If set, a timeout clears the TIEN bit. Thus, TH0 now controls the Timer 1 interrupt.
The microcontroller is an optimized core ratasheet up to 20 MIPS peak performance. Set by software to specify edge-sensitive detection, that is,1-to-0 transition. If a model is not available for web samples, look for notes on the product page that indicate how to request samples or Contact ADI. Documents Flashcards Grammar checker. A Page 70 of 95 P3. Internal POR Operation reach their destinations.
A brief description of some of the software tools and components in the QuickStart Development System follows. Set to 1 by the user to power on DAC1. Timer 0 Run Control Bit. This is then factored into the calculation of the actual frequency during this interval. An external reference can be connected as described in the Voltage Reference Connections section.
The SS pin must also be driven low dataeheet during the byte communication. The various ranges specified are as follows:. In systems with only one ground plane, ensure that the digital and analog components are physically separated onto separate halves of the board such that digital return currents do not flow near analog circuitry and vice versa.
Set by the user to enable the SPI interface.
ADuC Datasheet and Product Info | Analog Devices
Cleared by hardware when the program counter PC vectors to the interrupt service routine. This bit should always contain 0. For Mode 1, the stop bit is latched into RB8. The divider ratio is selected as follows: The user can run code from this internal memory only.
This value can range from 0H dtasheet 7H. The high voltage 12 V supply required for flash programming is generated using on-chip charge pumps to supply the high voltage program lines. In this section of the data sheet, it is assumed that P2.