Intel mcs-48 manual IpAL---ooj·1, Port 2 Timing

8022

A.C. CHARACTERISTICS

TA=O·Cto 70·C, Vcc=5.5V ± 1V, vss=ov			Test Conditions: Cl=80 pF tCy=8.38 j.ls
	Symbol	Parameter	Min.	Max.	Unit	Notes
	tcp	Port Control Setup Before Falling Edge of PROG	0.5		j.lS
	tpc	Port Control Hold After Falling Edge of PROG	0.8		j.ls
Expander	tPR	PROG to Time P2 Input Must Be Valid		1.0	j.ls
Operation	top	Output Data Setup Time	7.0		j.lS
	tpo	Output Data Hold Time	8.3		j.lS
	tpF	Input Data Hold Time	0	.150	j.ls
	tpp	PROG Pulse Width	8.3		j.ls
	tpRl	ALE to Time P2 Input Must Be Valid		3.6	j.ls
Normal	tpl	Output Data Setup Time	0.8		j.lS
Operation	tlP	Output Data Hold Time	1.6		j.lS
	tpFl	Input Data Hold Time	0		j.lS
	tll	ALE Pulse Width	3.9	23.0	j.lS	tCy=8.38 j.lS for min

PORT 2 TIMING

			NORMAL OPERATION
ALEr\~______________________~n~______~_______________
	~
OUTPUT===x------------------------------~-----------------------------------
PORT
			~
	~______________________~r_\~________________________
ALE/\
PORT	------------------~(~		D_AT_A____~)(~______________________________
INPUT		IpAL---ooj·1
	I·		H
			tpFL
			EXPANDER OPERATION
ALE	n ~______________________~r_\~________________________
PAOG			\~------------------~/
			J!Cd-------------'''------------.. 1f
PORT	___________________________________~~_______________~)( DATA x=====
OUTPUT
				L,,,...L.J
				,. .--r;;;-l
	~______________________~r_\~_________________________
ALEF\
PROG			\~------------------~I
PORT
INPUT				DATA
	----------------------------~~~--------------~~F
			~"c-.j	'"
			r--'''---1
			6-54	AFN-Q0187A-04