ADUC843 DATASHEET PDF

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Cleared by software to select timer operation input from internal system clock. A Page 21 of 95 —0. This internal code space can be downloaded via the UART serial port while the device is in-circuit. For correct operation of the power supply monitor function, AVDD must be equal to or greater than 2.

Set to 0 by the user to power off DAC0. A Page 70 of 95 P3. A Page 95 of The mnemonics for accumulator-specific instructions refer to the accumulator as A. Operating from the The lowest 32 bytes are grouped into four banks of eight registers addressed as R0 to R7. Thus, it increments six times faster than Timer 1, and therefore baud rates six times faster are possible.

System calibration can be initiated to compensate for both internal and external system errors. For that reason, do not use a reference voltage lower than 1 V. Set by hardware by a falling edge or by a zero level being applied to the external interrupt pin, INT1, depending on the state of Bit IT1. Set by hardware on a Timer 2 overflow. Cleared by the user to disable autoswapping of the DPTR. At 5 V the core clock can be set to a maximum of A larger capacitor can be used if desired, but not a larger resistor for reasons described below.

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dstasheet It is measured after adjusting for zero error and full-scale error. Mode 2 is selected by setting SM0 and clearing SM1.

When enabled, the watchdog circuit generates a system reset or interrupt WDS if the user program fails to set the watchdog WDE bit within a predetermined amount of time see PRE bits in Table Scale the clock source for the PWM counter as follows: Precision instrumentation, smart sensors. Features of this architecture include inherent adhc843 monotonicity and excellent differential linearity. Aduc83 uses the Timer 0 control bits: Set by hardware after receiving a general call address.

Port 2 pins that have 1s written to them are pulled high by the internal pull-up resistors, and in that state can be used as inputs. The program memory can be programmed in-circuit by using the serial download mode provided, by using conventional third party memory programmers, or via a user defined protocol that axuc843 configure it as data if required.

Cleared by software to enable Timer 1 whenever the TR1 control bit is set. A functional block diagram of the parts is shown on the first page.

AN-644 APPLICATION NOTE Frequency Measurement Using Timer 2 on a MicroConverter

Increasing the offset coefficient compensates for positive offset, and effectively pushes the ADC transfer function down. Thus, if the user needs to use more than one register bank, the stack pointer should be initialized to an area of RAM not used for data storage.

Refer to the Dual Data Pointer section. There are no restrictions on the duty cycle of the external input signal, but to ensure that a given level is sampled at least once before it changes, it must be held for a minimum of one full machine cycle. It is important to note the scheduled dock date on the order entry screen.

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Also, one can just as easily use an instrumentation amplifier in its place to condition differential signals. Again, excellent ac performance can be observed in both plots with some roll-off being observed as VREF falls below 1 V.

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Timer 0 Mode Select Bit 1. Application Note uC details this serial download protocol and is available from www. This can be one of 4 stages: 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 divider ratio is selected as follows: Datasbeet Memory Address A3. DGND is the ground reference point for the digital circuitry. This C code example contains three files: Price Rohs Orders from Analog Devices. This allows the master to wait for the slave daatasheet be ready before transmitting the clocks for the next byte. Both PWMs have the same clock source and clock divider. It is automatically cleared when the calibration cycle is completed.

In this section of the data sheet, it is assumed that P2. Also note that retention lifetime, based on an activation energy of 0. Twenty-Four Hour Select Bit.

This may be used as a general-purpose nonvolatile scratchpad area. These security modes can be enabled as part of serial datassheet protocol as described in Application Note uC or via parallel programming. The SPI port can be configured for master or slave operation and typically consists of four pins, described in the following sections.