PSD835G2 datasheet(82/102 Pages) STMICROELECTRONICS

82 / 102 page

PSD835G2

82/102

DC AND AC PARAMETERS

This section summarizes the operating and mea-

surement conditions, and the DC and AC charac-

teristics of the device. The parameters in the DC

and AC Characteristic tables that follow are de-

rived from tests performed under the Measure-

ment Conditions summarized in the relevant

tables. Designers should check that the operating

conditions in their circuit match the measurement

conditions when relying on the quoted parame-

ters.

Table 52. Operating Conditions

Table 53. AC Signal Letters for PLD Timing

Note: Example: tAVLX = Time from Address Valid to ALE Invalid.

Table 54. AC Signal Behavior Symbols for PLD

Timing

Note: Example: tAVLX = Time from Address Valid to ALE Invalid.

Table 55. AC Measurement Conditions

Note: 1. Output Hi-Z is defined as the point where data out is no longer driven.

Table 56. Capacitance

Note: 1. Sampled only, not 100% tested.

2. Typical values are for TA = 25°C and nominal supply voltages.

Symbol

Parameter

Min.

Max.

Unit

VCC

Supply Voltage

4.5

5.5

Ambient Operating Temperature (industrial)

–40

°C

Ambient Operating Temperature (commercial)

°C

Address Input

CEout Output

Input Data

E Input

Interrupt Input

ALE Input

RESET Input or Output

Port Signal Output

QOutput Data

UDS, LDS, DS, RD, PSEN Inputs

Chip Select Input

TR/W Input

WR Input

VSTBY Output

Output Macrocell

tTime

Logic Level Low or ALE

Logic Level High

Valid

No Longer a Valid Logic Level

ZFloat

Pulse Width

Symbol

Parameter

Min.

Max.

Unit

Load Capacitance

Symbol

Parameter

Test Condition

Typ.2

Max.

Unit

CIN

Input Capacitance (for input pins)

VIN = 0V

COUT

Output Capacitance (for input/

output pins)

VOUT = 0V

812

CVPP

Capacitance (for CNTL2/VPP)VPP = 0V

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