beautypg.com

Microprocessor bus ac characteristics, Icroprocessor, Haracteristics – Maxim Integrated DS33Z41 User Manual

Page 155

background image

DS33Z41 Quad IMUX Ethernet Mapper

155 of 167

11.8 Microprocessor Bus AC Characteristics

Table 11-13. AC Characteristics—Microprocessor Bus Timing

(VDD3.3 = 3.3V

±5%,VDD1.8 = 1.8 ± 5% T

j

= -40°C to +85°C.)

PARAMETER SYMBOL

MIN

TYP

MAX

UNITS

Setup Time for A[12:0] Valid to

CS Active

t1 0 ns

Setup Time for

CS Active to either RD, or WR

Active

t2 0 ns

Delay Time from Either

RD or DS Active to

DATA[7:0] Valid

t3 75 ns

Hold Time from Either

RD or WR Inactive to

CS Inactive

t4 0 ns

Hold Time from

CS or RD or DS Inactive to

DATA[7:0] Tri-State

t5 5 20 ns

Wait Time from R

W Active to Latch Data

t6 80 ns

Data Setup Time to

DS Inactive

t7 10 ns

Data Hold Time from R

W Inactive

t8 2 ns

Address Hold from R

W inactive

t9 0 ns

Write Access to Subsequent Write/Read
Access Delay Time

t10 80 ns