ST10F271 datasheet(126/173 Pages) STMICROELECTRONICS

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Electrical characteristics

ST10F271

126/173

24.4

Parameter interpretation

The parameters listed in the following tables represent the characteristics of the ST10F271

and its demands on the system.

Where the ST10F271 logic provides signals with their respective timing characteristics, the

symbol “CC” for Controller Characteristics, is included in the “Symbol” column. Where the

external system must provide signals with their respective timing characteristics to the

ST10F271, the symbol “SR” for System Requirement, is included in the “Symbol” column.

24.5

DC characteristics

VDD = 5 V ± 10%, VSS = 0 V, TA = –40 to +125°C

Table 62.

Package characteristics

Package

Ambient temperature range

CPU frequency range

PQFP 144

–40 / +125°C

1 – 64MHz

LQFP 144

–40 / +125°C

1 – 40MHz

Table 63.

DC characteristics

Parameter

Symbol

Limit values

Unit

Test Condition

min.

max.

Input low voltage (TTL mode)

(except RSTIN, EA, NMI, RPD, XTAL1,

READY)

VIL

– 0.3

0.8

–

Input low voltage (CMOS mode)

(except RSTIN, EA, NMI, RPD, XTAL1,

READY)

VILS SR

– 0.3

0.3 VDD

V–

Input low voltage RSTIN, EA, NMI, RPD

VIL1 SR

– 0.3

0.3 VDD

V–

Input low voltage XTAL1 (CMOS only)

VIL2 SR

– 0.3

0.3 VDD

Direct Drive mode

Input low voltage READY (TTL only)

VIL3 SR

– 0.3

0.8

–

Input high voltage (TTL mode)

(except RSTIN, EA, NMI, RPD, XTAL1)

VIH

2.0

VDD + 0.3

–

Input high voltage (CMOS mode)

(except RSTIN, EA, NMI, RPD, XTAL1)

VIHS SR

0.7 VDD

VDD + 0.3

–

Input high voltage RSTIN, EA, NMI, RPD VIH1 SR

0.7 VDD

VDD + 0.3

–

Input high voltage XTAL1 (CMOS only)

VIH2 SR

0.7 VDD

VDD + 0.3

Direct Drive mode

Input high voltage READY (TTL only)

VIH3 SR

2.0

VDD + 0.3

–

Input Hysteresis (TTL mode)

(except RSTIN, EA, NMI, XTAL1, RPD)

VHYS CC

400

700

(1)

Input Hysteresis (CMOS mode)

(except RSTIN, EA, NMI, XTAL1, RPD)

VHYSSCC

750

1400

(1)

Input Hysteresis RSTIN, EA, NMI

VHYS1CC

750

1400

(1)

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