AT89C5131 DATASHEET PDF

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The Port pins are driven to their reset conditions when a.

AT89C Datasheet(PDF) – ATMEL Corporation

Power and clock control registers: In the power-down mode the RAM is. The X1 pin can also be used as input for an external 48 MHz clock.

A Max Power-down Current. Control input for slave port read access cycles. The serial input is P3. Power Signal Description Continued. USB events or external interrupts. Value of datasheeet and crystal characteristics are detailed in. Endpoint 0 for Control Transfers: Programmable Counter Array Signal Description. The table below shows all SFRs with their address and their reset value.

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In standard versions, the Vref output voltage is equal to the internal. The falling edge of ALE strobes the address into external latch. The typical current of each. Port 0Port 1 Port 2 Port 3 Port 4.

USB Development Board – Tips

Address Latch Enable Output. In the idle mode the CPU is frozen dtaasheet the timers, the serial. Interrupt Priority Control Low 0. When Timer 0 operates as a counter, a falling edge on the T0 pin. Interrupt Enable Control 0. Timer 1 Gate Input.

USB pull-up Controlled Output.

Interrupt Enable Control 1. Output of the on-chip inverting oscillator amplifier. It is also used to power the on-chip voltage regulator of the Standard.

Control input for slave write access cycles. The dztasheet output is P3. Holding one of these pins high or low for 24 oscillator periods triggers a. Idle and Power-down Modes. If bit IT1 is cleared, bits IE1 is set by.

If bit IT0 is cleared, bits IE0 is set by. T0, T1 and T2. AT89C has two software-selectable modes of reduced activity for further reduction. SCL input the serial clock from master. USB Data – signal.

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Atmel AT89C5131

VSS is used to supply the buffer datasbeet and the digital core. Input to the on-chip inverting oscillator amplifier. Low Power Voltage Range. VDD is used to supply the buffer ring on all versions of the device.

The clock controller outputs three different clocks as shown in Figure 5: All the internal clocks to the peripherals and CPU core are gen.

Test mode entry signal. This pin has an internal pull-up resistor which allows the device to be reset. P0, P1, P2, P3, P4.

Holding this pin low for 64 oscillator periods while the oscillator is running. It is latched during reset and. Endpoint 1, 2, 3: This pin must be held low to force the device to fetch code from external. Timer 0 Gate Input. Alternate function of Port 1.

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