3.5.1 Reset and Discovery Response Timing
| Parameter and Condition(1, 2) | Symbol | Standard Speed(3, 4) | High Speed | Units | ||
|---|---|---|---|---|---|---|
| Min. | Max. | Min. | Max. | |||
| Reset Low Time, Device in Inactive State | tRESET | 480 | — | 96 | — | µs |
| Discharge Low Time, Device in Active Write Cycle (tWR) | tDSCHG | 150 | — | 150 | — | µs |
| Reset Recovery Time | tRRT | N/A | N/A | 8 | — | µs |
| Discovery Response Request | tDRR | N/A | N/A | 1 | 2 - tPUP(5) | µs |
| Discovery Response Acknowledge Time | tDACK | N/A | N/A | 8 | 24 | µs |
| Host Strobe Discovery Response Time | tMSDR | N/A | N/A | 2 | 6 | µs |
| SI/O High Time for Start/Stop Condition | tHTSS | N/A | N/A | 150 | — | µs |
Note:
- Parameters applicable over operating range in DC and AC Operating Range, unless otherwise noted.
- AC measurement conditions for the table above:
- Loading capacitance on SI/O: 100 pF
- RPUP (bus line pull-up resistor to VPUP): 1 kΩ; VPUP: 2.7V
- Because the device will default to High-Speed mode upon Reset, the Reset and Discovery Response Timing after tRESET does not apply for Standard Speed mode. High-Speed mode timing applies in all cases after tRESET.
- Standard Speed is not available on the AT21CS11.
- tPUP is the time needed for the SI/O line to transition from VIL to VIH after being released. This value is specific to the application and depends on the loading capacitance on the SI/O line and the selected RPUP. The use of additional client devices adds capacitance to the SI/O line and should be taken into consideration. Limits for these values are provided in AT21CS01 DC Characteristics and AT21CS11 DC Characteristics.