IA16450 Datasheet, PDF (7/10 Pages) InnovASIC, Inc – Universal Asynchronous Receiver/Transmitter

IA16450
Page 7 of 10
Preliminary Data Sheet
Universal Asynchronous Receiver/Transmitter
AC Electrical Characteristics
Table 3
Symbol
t
ADS
t_AH
t
AR
t
AS
t_AW
t_CH
t
CS
t
CSC
t
CSR
t_CSW
t_DH
t
DS
t
HZ
t_RA
t
RC
t
RCS
t
RD
t
RDD
t_RVD
t_WA
t
WC
t
WCS
t
WR
RC
WC
Parameter
Address Strobe Width
Address Hold Time
RD, RD_n Delay from Address (Note 1)
Address Setup Time
WR, WR_n Delay from Address (Note 1)
Chip Select Hold Time
Chip Select Setup Time
Chip Select Output Delay from Select (Note 1)
RD, RD_n Delay fron Select (Note 1)
WR, WR_n Delay fron Select (Note 1)
Data Hold Time
Data Setup Time
RD, RD_n to Floating Data Delay
Address Hold Time from RD, RD_n (Note 1)
Read Cycle Delay
Chip Select Hold Time from RD, RD_n (Note 1)
RD, RD_n Strobe Width
RD, RD_n to Driver Disable Delay
Delay from RD, RD_n to Data
Address Hold Time from WR, WR_n
Write Cycle Delay
Chip Select Hold Time from WR, WR_n (Note 1)
WR, WR_n Strobe Width
Read Cycle = t + t + t
AR RD RC
Write Cycle = t _AW + t_WR+t_WC
Min
25
0
20
25
20
0
25
20
20
10
20
0
0
36
0
60
0
36
0
60
115
115
Note 1:
Applicable only when ADS_n is tied low.
Max
33
25
20
31
Copyright © 1999, InnovASIC Inc.
Customer Specific IC Solutions