PCD3312 Ver la hoja de datos (PDF) - Philips Electronics

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componentes Descripción

Fabricante

PCD3312

DTMF/modem/musical-tone generators

Philips Electronics 

Philips Semiconductors

DTMF/modem/musical-tone generators

Product specification

PCD3311C; PCD3312C

Table 7 Explanation of time symbols used in Fig.13

SYMBOL

PARAMETER

fSCL

SCL clock frequency

tSW

tolerable pulse spike width

tBUF

bus free time

tSU;STA

tHD;STA

set-up time repeated START

hold time START condition

tLOW

tHIGH

tr

tf

tSU;DAT

tHD;DAT

tSU;STO

SCL LOW time

SCL HIGH time

rise time SDA and SCL

fall time SDA and SCL

data set-up time

data hold time

set-up time STOP condition

REMARKS

The time that the bus is free (SDA is

HIGH) before a new transmission is

initiated by SDA going LOW.

Only valid for repeated start code.

The time between SDA going LOW and

the first valid negative-going transition of

SCL.

The LOW period of the SCL clock.

The HIGH period of the SCL clock.

MIN.

0

−

105

MAX. UNIT

2

kHz

100 ns

−

µs

105 155 µs

365 415 µs

105 155 µs

365 −

µs

−

1.0 µs

−

0.3 µs

250 −

ns

0

−

ns

105 155 µs

9 HANDLING

Inputs and outputs are protected against electrostatic discharge in normal handling. However, it is good practice to take

normal precautions appropriate to handling MOS devices (see “Handbook IC03, Section: General, Handling MOS

devices”).

1996 Nov 21

16

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