Table 7-1. HOLD Timing
7.1 Power Recommendation
The device internal POR (Power-On Reset) threshold is just below the minimum device operating voltage.
Power shall rise monotonically from 0.0Vdc to full VCC in less than 1ms. Hold at full VCC for at least 100μs before
the first operation. Power shall drop from full VCC to 0.0Vdc in less than 1ms. Power shall remain off (0.0Vdc) for
0.03ms minimum. Power dropping to a non-zero level and then slowly going to zero is not recommended, but if
unavoidable the VCC level supplied to the part must remain below 0.5V for at least 0.1ms to ensure a proper
reset. Please consult Atmel if your power conditions do not meet the above recommendations.
AT25080B/160B/320B/640B Automotive [DATASHEET]