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How is the RESET pin on an ATtiny connected?
I have two questions that I was hoping someone could clarify with a quick True/False. When using the ATtiny85/85/2313 the reset pin is connected to a 10k resistor which is connected to VCC. When programming with an AVR 6 pin programmer does the reset pin on an ATtiny at that point need to be connected to the 10k resistor to VCC?
Where does the RESET pin on an Arduino Uno go?
When using an Arduino Uno to program an ATtiny, the reset pin on the attiny is connected to D10. Does the reset pin additionally also need to be connected to a 10k resistor to VCC? Or to summarize does the reset pin on an ATtiny84/85/2313 always need to be connected to a 10k resistor to VCC?
How many pins are there in the ATtiny port?
If you look at the first figure on page 2 of the link above, you will see the typical ATTiny85 version that would be used by the average tinkerer. You can see that it has 8 pins, most of which have multiple labels attached to them. For example, Pin 3 is labelled as PCINT3, CLKI, ADC3, and PB3.
Why do you want to do Port manipulation on ATtiny?
Manipulation of port registers allow for lower-level and faster manipulation of the i/o pins of Arduino and on any ATTiny microchip. Why would you want to do this?
Is there a pull up resistor on the ATtiny?
The attiny does have an internal pull-up to VCC, but its quite weak (~100k iirc), so environmental conditions could cause a spontaneous reset. If you’re worried about this, you should use an external pull-up resistor. It means using an extra component, but it’s safer, especially if your reset pin is routed to a programming connector.
Can a Arduino UNO Program an attiny13a?
I am using an Arduino Uno as ISP (Using the standard ArduinoISP sketch) to program an ATTiny13A through the Arduino IDE. (I also have a USBtinyISP 2.0 and a USBASP 2.0, but can’t reliably get either to program this chip with any sketch.) I want to use all six I/O pins on the ATTiny to each control 1 LED.
Can a analog to digital converter be used on pin 1?
Yes, you can use the analog to digital converter on pin 1 even if the external reset is still enabled on that pin as long as the voltage on that pin does not drop below the reset threshold. Here is a simpler version of your circuit that works reliably…
When to use a 10K reset pin on an Arduino?
If the programmer turns it pins to high impedance / input state, then the 10k resistor on the controller’s reset is advisable again. Of course the 10k resistor is unnecessary when the reset pin is attached to a logic output from another chip.