AT89C5131 DATASHEET PDF

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In the idle mode the CPU is frozen while the timers, the serial. Timer 0, Timer 1 and Timer 2 Signal Description. The table below shows all SFRs with their address and their reset value.

Write signal asserted during external data memory write operation.

USB Development Board – Tips

USB events or external interrupts. If bit IT0 in this register is set, datasehet. P0, P1, P2, P3, P4. Value of capacitors and crystal characteristics are detailed in.

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SCL output the serial clock to slave peripherals. Interrupt Enable Control 1. Datashet Latch Enable Output. Power Signal Description Continued. If an external oscillator is used, leave XTAL2 unconnected.

Alternate function of Port 4. Hardware Watchdog Timer registers: Power and clock control registers: Timer Counter 0 External Clock Input. The Port pins are driven to their reset conditions when a. VSS is used to supply the buffer ring and the digital core. Output of the on-chip inverting oscillator at89c5311. If bit IT1 in this register is set, bits.

AT89C Datasheet(PDF) – ATMEL Corporation

Data LSB for Slave port access used for 8-bit and bit modes. Idle and Power-down Modes.

The clock controller outputs three different clocks as shown in Figure 5: This datasheeet is set to 0 for at least 12 oscillator periods when an internal reset. Low Power Voltage Range. This pin has an internal pull-up resistor which allows the device to be reset. Interrupt Priority Control Low 1. These pins can be directly connected to the Cathode of standard LEDs. The X1 pin can also be used as input for an external 48 MHz clock.

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AT89C5131 Datasheet PDF

If bit IT0 is cleared, bits IE0 is set by. Endpoint 0 for Control Transfers: Control input for slave port read access cycles.

Keypad Interface Signal Description. Address Bus MSB for external access. In standard versions, the Vref output voltage is equal to the internal.

AT89C is a high-performance Flash version of the 80C51 single-chip 8-bit micro. The falling edge of ALE strobes the address into external latch.

Interrupt Enable Control 0. Test mode entry signal. USB pull-up Controlled Output. A Max Power-down Current.

This pin must be held low to force the device to fetch code from external.