Datasheet ATtiny24A, ATtiny44A. Appendix A. Specification at 105°C (Microchip) - 5

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ATtiny24A/44A 2.4 Clock Characteristics 2.4.1 Accuracy of Calibrated Internal Oscillator
It is possible to manually calibrate the internal oscillator to be more accurate than default factory calibration. Note that the oscillator frequency depends on temperature and voltage. Voltage and temperature characteristics can be found in Figure 3-46 on page 32.
Table 2-2.
Calibration Accuracy of Internal RC Oscillator
Calibration Accuracy at given voltage Method Target Frequency VCC Temperature & temperature
(1)
Factory
8.0 MHz 3V 25°C ±10%
Calibration User
Fixed frequency within: Fixed voltage within: Fixed temperature ±1%
Calibration
7.3 – 8.1 MHz 1.8V – 5.5V within: -40°C to 105°C Note: 1. Accuracy of oscillator frequency at calibration point (fixed temperature and fixed voltage).
2.5 System and Reset Characteristics 2.5.1 Power-On Reset Table 2-3.
Characteristics of Enhanced Power-On Reset. T = -40 to +105°C A
Symbol Parameter Min
(1)
Typ
(1)
Max
(1)
Units
V Release threshold of power-on reset (2) 1.1 1.4 1.7 V POR V Activation threshold of power-on reset (3) 0.6 1.3 1.7 V POA SRON Power-On Slope Rate 0.01 V/ms Notes: 1. Values are guidelines, only 2. Threshold where device is released from reset when voltage is rising 3. The Power-on Reset will not work unless the supply voltage has been below VPOA
2.6 Analog Comparator Characteristics Table 2-4.
Analog Comparator Characteristics, T = -40°C to +105°C A
Symbol Parameter Condition Min Typ Max Units
V Input Offset Voltage V = 5V, V = V / 2 < 10 40 mV AIO CC IN CC ILAC Input Leakage Current VCC = 5V, VIN = VCC / 2 -50 50 nA Analog Propagation Delay V = 2.7V 750 CC (from saturation to slight overdrive) V = 4.0V 500 CC t ns APD Analog Propagation Delay VCC = 2.7V 100 (large step change) V = 4.0V 75 CC tDPD Digital Propagation Delay VCC = 1.8V - 5.5 1 2 CLK Note: All parameters are based on simulation results and are not tested in production
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8183D-Appendix A–AVR–08/11 Document Outline Appendix A – ATtiny24A/44A Specification at 105°C 1. Memories 1.1 EEPROM Data Memory 2. Electrical Characteristics 2.1 Absolute Maximum Ratings* 2.2 DC Characteristics 2.3 Speed 2.4 Clock Characteristics 2.4.1 Accuracy of Calibrated Internal Oscillator 2.5 System and Reset Characteristics 2.5.1 Power-On Reset 2.6 Analog Comparator Characteristics 2.7 ADC Characteristics 2.8 Serial Programming Characteristics 3. Typical Characteristics 3.1 ATtiny24A 3.1.1 Current Consumption in Active Mode 3.1.2 Current Consumption in Idle Mode 3.1.3 Current Consumption of Standby Supply 3.1.4 Current Consumption in Power-down Mode 3.1.5 Current Consumption of Peripheral Units 3.1.6 Pull-up Resistors 3.1.7 Output Driver Strength 3.1.8 Input Threshold and Hysteresis (for I/O Ports) 3.1.9 BOD and Bandgap 3.1.10 Analog Comparator Offset 3.1.11 Internal Oscillator Speed 3.2 ATtiny44A 3.2.1 Current Consumption in Active Mode 3.2.2 Current Consumption in Idle Mode 3.2.3 Current Consumption of Standby Supply 3.2.4 Current Consumption in Power-down Supply Mode 3.2.5 Current Consumption of Peripheral Units 3.2.6 Pull-up Resistors 3.2.7 Output Driver Strength 3.2.8 Input Threshold and Hysteresis (for I/O Ports) 3.2.9 BOD and Bandgap and Reset 3.2.10 Analog Comparator Offset 3.2.11 Internal Oscillator Speed 4. Ordering Information 4.1 ATtiny24A 4.2 ATtiny44A 5. Revision History