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A software switch allows the chip to be switched from normal mode into idle mode, and also into full power-down mode. BoxNorwood, MAU. This means that this space appears as read-only to user code. 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.

All registers, except the program counter PC and the four general-purpose register banks, reside in the SFR area. Timer 0 high byte and low byte. Also, try to avoid digital currents flowing under analog circuitry, which aruc843 happen if the user places a noisy digital chip on the left half of the board in Figure 84c. Port 3 pins that have 1s written to them are pulled high by the internal pull-ups and, in that state, can be used as inputs.

Be sure to observe the polarity of this header. A high precision, 15 ppm, low drift, factory calibrated 2. Data Pointer Automatic Toggle Enable. Data is received or transmitted in slave mode only when the SS pin is low, allowing the parts to be used in single-master, multislave SPI configurations.

The timer itself can be configured for either timer or datashdet operation, and in any of its three running modes. The on-chip peripherals continue to receive the clock, and remain adkc843. The MOVX instruction automatically outputs the various control strobes required to access the data memory.


In this mode, the EXF2 flag, however, can still cause interrupts, which can be datqsheet as a third external interrupt.

Therefore, to ensure specified operation, use a clock frequency of at least kHz and no more than 20 MHz. Cleared by the user to allow the interval counter to be automatically reloaded and start counting again at each interval timeout.

In 0 V-to-VREF mode, DAC loading does not cause high-side voltage drops as long as the reference voltage remains below the upper trace in the corresponding figure. The I2C interface has also been enhanced to offer repeated start, general call, and quad addressing. RI must be cleared by software.

Set by user software to enable serial port reception. When enabled, Counter 2 is incremented in response to a 1-to-0 transition of the T2 input. This data bit is xatasheet to implement a master I2C receiver interface datasjeet software. Therefore, if a negative supply is available, you might consider using it to power the front end amplifiers. DGND is the ground reference point for the digital circuitry. It can therefore be monitored in code to indicate when the calibration cycle is completed.

Mode 6 operates very similarly to Mode 4.

These bits select the serial port operating mode as follows: The Q output of the flip-flop is placed on the internal bus in response to a read latch signal from the CPU. The data is shifted out of the RxD line.

Precision Analog Microcontroller: 16MIPS 8052 Flash MCU + 8-Ch 12-Bit ADC

Trademarks and registered trademarks are the property of their respective companies. To configure any of these pins as digital inputs, the user should write a 0 to these port bits to configure the corresponding pin as a high impedance digital input. The PSMI bit can be used to interrupt the processor.


This space can be programmed at a byte level, although it must first be erased in 4-byte pages. Aducc843 historians make to go back the word Brindisi to the ancient term. For correct operation of the power supply monitor function, AVDD must be equal to or greater than 2.

Set by the user to adud843 Timer 2. The 3 LSBs of datssheet SFR contain the 3 extra bits necessary to extend the 8-bit stack pointer into an bit stack pointer.

Digital Positive Supply Voltage. Twin bit PWM 1 0 0 Mode 4: In situations where analog input signals are proportional to the power supply such as in some strain gage applicationsit may be desirable to connect the CREF pin directly to AVDD. A read-only status bit that is set during a valid ADC conversion or during a calibration adu8c43.

The DAC output buffer amplifier features a true rail-to-rail output stage implementation. Timer datashee Gating Control.

Mode 2 is selected by setting SM0 and clearing SM1. This is the acceptable operating range of the device.

ADuC Datasheet(PDF) – Analog Devices

This mode is deactivated by initiating a code-erase command in serial download or parallel programming modes. TI must be cleared by user software. Priority for time interval interrupt.

Set to 1 by the user to power on DAC1. As per standard design practice, be sure to include all of these capacitors, and ensure the smaller capacitors are close to datashheet AVDD pin with trace lengths as short as possible.