IA82050-PDW28I-R-01 datasheet(17/22 Pages) INNOVASIC

17 / 22 page

IA82050

Data Sheet

Asynchronous Serial Controller

February 25, 2011

IA211030617-08

http://www.Innovasic.com

UNCONTROLLED WHEN PRINTED OR COPIED

Customer Support:

Page 17 of 22

1-888-824-4184

AC Characteristics

Table 10. AC Characteristics

Parameter

Min

Max

Notes

CLK period

54 ns

250 ns

Divide by Two

CLK period

54 ns

108 ns

No Divide by

CLK Low Time

25 ns

CLK High Time

25 ns

CLK Rise Time

10 ns

Divide by Two

Measured between 0.3 *

VDD and 0.7 * VDD

CLK Fall Time

10 ns

Divide by Two

Measured between 0.3 *

VDD and 0.7 * VDD

CLK Rise Time

15 ns

No Divide by

CLK Fall Time

15 ns

No Divide by

Crystal Frequency

1 Mhz

20 Mhz

Reset Width

8 * Clock Period

RTS/DTR Low Setup to

Reset inactive

6 * Clock Period

RTS/DTR Low Hold after

Reset inactive

Clock Period

– 20 ns

RDn Active Width

2* clock period

+ 65 ns

Address/CSn Setup Time to

RDn Active

7 ns

Address/CSn Hold after

RDn Inactive

0 ns

RDn or WRn Inactive to

Active Delay

Clock Period +

15 ns

Data Out Float Delay after

RDn Inactive

40 ns

WRn Active Width

2 * Clock Period

+ 15 ns

Address CSn Setup Time to

WRn Active

7 ns

Address and CSn hold

Time after WRn

0 ns

Data in Setup Time to WRn

Inactive

90 ns

Data In Hold Time after

WRn Inactive

12 ns

SCLK Period

216 ns

16x Clocking Mode

SCLK Period

3500 ns

1x Clocking Mode

RXD Setup Time to SCLK

High

250 ns

RXD Hold Time after SCLK

High

250 ns

TXD Valid after SCLK Low

170 ns

TXD Delay after RXD

170 ns

Remote Loopback

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