STM1403 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

STM1403

3 V FIPS-140 security supervisor with battery switchover

STMicroelectronics 

DC and AC parameters

7

DC and AC parameters

STM1403

This section summarizes the operating measurement conditions, and the DC and AC

characteristics of the device. The parameters in the DC and AC characteristics Tables that

follow, are derived from tests performed under the Measurement Conditions summarized in

Table 5: Operating and AC measurement condition. Designers should check that the

operating conditions in their circuit match the operating conditions when relying on the

quoted parameters.

Table 5. Operating and AC measurement condition

Parameter

STM1403

Unit

VCC/VBAT supply voltage

Ambient operating temperature (TA)

Input rise and fall times

Input pulse voltages

Input and output timing ref. voltages

2.2 to 3.6

V

–40 to 85

°C

≤5

ns

0.2 to 0.8VCC

V

0.3 to 0.7VCC

V

Figure 24. AC testing input/output waveforms

0.8VCC

0.2VCC

0.7VCC

0.3VCC

AI02568

Figure 25. MR timing waveform

MR

tMLRL

RST

tMLMH

trec

AI09694

Figure 26.

STM1403 switchover diagram, condition A (VBAT < VSW)

VCC = 3.3V

VRST

VSW = 2.4V

VBAT

VOUT

VBAT – 75mV

VBAT – 35mV

AI10463

Figure 27.

STM1403 switchover diagram, condition B (VBAT > VSW)

VCC = 3.3V

VOUT

VBAT

VSW = 2.4V

VSW + 40mV

AI10464

24/35

Share Link: