AT89C5132-ROTIL datasheet(20/38 Pages) ATMEL

Part #	AT89C5132-ROTIL

Description	USB USB Microcontroller with 64K Bytes Flash Memory

PDF	38 Pages

Scroll/Zoom	100%

Manufacturer	ATMEL [ATMEL Corporation]

Direct Link	http://www.atmel.com

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20 / 38 page

AT89C5132

4173CS–USB–07/04

Table 3. External 8-bit Bus Cycle – Data Write AC Timings

DD = 2.7 to 3.3V, TA = -40° to +85°C

Waveforms

Figure 1. External 8-bit Bus Cycle – Data Read Waveforms

Symbol

Parameter

Variable Clock

Standard Mode

Variable Clock

X2 Mode

Unit

Min

Max

Min

Max

CLCL

Clock Period

LHLL

ALE Pulse Width

2·T

CLCL-15

AVLL

Address Valid to ALE Low

CLCL-20

0.5·T

CLCL-20

LLAX

Address hold after ALE

Low

CLCL-20

0.5·T

CLCL-20

TLLWL

ALE Low to WR Low

3·TCLCL-30

1.5·TCLCL-30

TWLWH

WR Pulse Width

6·TCLCL-25

3·TCLCL-25

TWHLH

WR High to ALE High

TCLCL-20

TCLCL+20

0.5·TCLCL-20

0.5·TCLCL+20

TAVWL

Address Valid to WR Low

4·TCLCL-30

2·TCLCL-30

TQVWH

Data Valid to WR High

7·TCLCL-20

3.5·TCLCL-20

TWHQX

Data Hold after WR High

TCLCL-15

0.5·TCLCL-15

AVDV

LLAX

RHDX

RHDZ

AVLL

TAVRL

ALE

TLHLL

TRLRH

Data In

A15:8

RLAZ

TLLRL

TRHLH

TRLDV

D7:0

A7:0

AT89C5132-ROTIL Datasheet(PDF) 20 Page - ATMEL Corporation

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