STM6779 datasheet(18/30 Pages) STMICROELECTRONICS

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DC and AC parameters

STM6717/6718/6719/6720/STM6777/6778/6779/6780

18/30

Doc ID 11469 Rev 8

DC and AC parameters

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 conditions. Designers should check that the

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

quoted parameters.

Figure 25.

AC testing input/output waveforms

Figure 26.

MR timing waveform (STM6717/18/19/20)

Figure 27.

MR timing waveform (STM6777/78/79/80)

By connecting a certain capacitor between the MRC pin and VSS, the RST can be delayed from 6 µs or

more (tMLMH, see Table 7 on page 21).

Table 5.

Operating and AC measurement conditions

Parameter

STM67xx

Unit

VCC supply voltage

0.8 to 5.5

Ambient operating temperature (TA)

–40 to 85

°C

Input rise and fall times

≤ 5ns

Input pulse voltages

0.2 to 0.8VCC

Input and output timing ref. voltages

0.3 to 0.7VCC

AI02568

0.8VCC

0.2VCC

0.7VCC

0.3VCC

AI10423a

RST

MLRL

rec

MLMH

AI10424c

RST

trec

MLMH

(1)

MLRL

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