2.4 DC Parameters
| Parameter | Symbol | Min. | Typ. | Max. | Unit | Notes |
|---|---|---|---|---|---|---|
| Ambient Operating Temperature | TA | -40 | — | +85 | °C | — |
| Supply Voltage(2) | VSIO | 2.0 | — | 4.5 | V | Voltage on SIO pin during computation and when high during transmission to ATSHA206A |
| Current Consumption during Computation | ICOMPUTE | — | 500 | 2000 | µA | -40°C → +85°C, VSIO = 4.5V |
| Current Consumption during I/O Mode | IIO | — | 125 | 250 | µA | -40°C → +85°C, VSIO = 4.5V |
| Sleep Current(3) | ISLEEP | — | 50 | 200 | nA | When the device is in Sleep mode, VSIO(1) ≤ 4.5V, TA ≤ +85°C |
| Output Low Voltage | VOL | — | — | 0.4 | V | When the device is in I/O mode, VSIO(1) = 3.0 to 4.5V |
| Output Low Current | IOL | — | — | 4 | mA | When the device is in I/O mode, VSIO(1) = 3.0 to 4.5V, VOL = 0.4V |
| Input Low Voltage | VIL | GND - 0.3 | — | VSIO x 0.3 | V | — |
| Input High Voltage | VIH | VSIO x 0.7 | — | 4.5 | V | — |
Note:
- VSIO is the high level to which SIO is driven during I/O mode. The driver could be either (or both) the totem pole driver on the MCU or the resistor when the ATSHA206A returns data. This is also the value that should be connected to the pull-up resistor on the SIO signal.
- During power-up from sleep, or from a prolonged low period on SIO, the ATSHA206A will self-configure and may consume up to 500 µA for tWHI. The VSIO high level must be maintained during this phase.
- ISLEEP varies exponentially with temperature. The highest sleep current occurs at +85°C.