ACE34AC04

4K I

VER 1.1

16

Figure 12: Read RSWP

X = Don’t care

Figure 13: SCL and SDA Bus Timing

X = Don’t care

Electrical Specifications

(A)

Power-Up Requirements

During a power-up sequence, the VCC supplied to the device should monotonically rise from GND to

the minimum VCC level, with a slew rate no faster than 0.05 V/μs and no slower then 0.1 V/ms. A

decoupling cap should be connected to the VCC PAD which is no smaller than 10nF.

(B)

Device Reset

To prevent inadvertent write operations or any other spurious events from occurring during a

power-up sequence, this device includes a Power-on Reset (POR) circuit. Upon power-up, the

device will not respond to any commands until the VCC level crosses the internal voltage threshold

(VPOR) that brings the device out of Reset and into Standby mode. The system designer must

ensure the instructions are not sent to the device until the VCC supply has reached a stable value

greater than or equal to the minimum VCC level.

Figure 14: Power on and Power down

If an event occurs in the system where the VCC level supplied to the device drops below the maximum

in compliance with the requirements defined in this section.