SPC574K72E5 datasheet(35/127 Pages) STMICROELECTRONICS

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SPC574Kxx

Electrical characteristics

126

Figure 7. I/O output DC electrical characteristics definition

The following tables provide DC characteristics for bidirectional pads:



Table 16 provides output driver characteristics for I/O pads when in WEAK

configuration.



Table 17 provides output driver characteristics for I/O pads when in MEDIUM

configuration.



Table 18 provides output driver characteristics for I/O pads when in STRONG

configuration.



Table 19 provides output driver characteristics for I/O pads when in VERY STRONG

configuration.

Note:

Driver configuration is controlled by SIUL2_MSCRn registers. It is available within two

PBRIDGEA_CLK clock cycles after the associated SIUL2_MSCRn bits have been written.

Table 16 shows the WEAK configuration output buffer electrical characteristics.

10%

Vout

VINTERNAL

VHYS

(SIUL register)

20%

80%

90%

tR10-90

tR20-80

tF10-90

tF20-80

tTR (max) = MAX (tR10-90;tF10-90)

tTR (min) = MIN (tR10-90;tF10-90)

tTR20-80(max) = MAX (tR20-80;tF20-80)

tTR20-80(min) = MIN (tR20-80;tF20-80)

tSKEW

t

R20-80-tF20-80

tSKEW20-80

50%

tPLH (rising edge)

tPHL (falling edge)

50%

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