Intel mcs-48 manual Port 2 Timing, BUS Timing AS a Function of TCY

inter 8048H/8048H-1/8035HL/8035HL-1

A.C. CHARACTERISTICS (PORT 2 TIMING) TA =O°C to 70°C, VCC =5V± 10%, VSS =OV

			8048H			8048H-1
			8035HL			8035HL-1
Symbol	Parameter	6	MHz	8 MHz		11 MHz		Unit
		Min. Max. Min. Max. Min. Max.
tcp	Port control Setup Before Falling	110		105				ns
	Edge of PAOG.
tpc	Port Control Hold After Falling	100		90				ns
	Edge of PAOG.
tpA	PAOG to Time P2 Input Must Be Valid		810		700		650	ns
tpF	Input Data Hold Time	0	150	0	150	0	150	ns
top	Output Data Setup Time	250		210		200		ns
tpo	Output Data Hold Time	65		35		20		ns
tpp	PAOG Pulse Width	1200		970		700		ns
tpL	Port 2 1/0 Data Setup	350		300		250		ns
tLP	Port 2 1/0 Data Hold	150		65		20		ns
PORT 2 TIMING

ALE J	\'-------~	\'---------r~1
		-+CA~
EXPANDER		rIOp --- tIPD
PORT
OUTPUT	PCH	I
		PORT CONTROLOUTPUT DATA
EXPANDER
PORT
INPUT	PCH

PROG r lPp

BUS TIMING AS A FUNCTION OF TCY *

SYMBOL	FUNCTION OF TCY					SYMBOL	FUNCTION OF TCY
TLL	7/30	TCY	MIN			TAD (1) 11/30		TCY	MAX	TAD (1): AD
TAL	1/10	TCY	MIN			TAD (2)	3/10	TCY	MAX	TAD (2) : PSEN
TLA	1/15	TCY	MIN			TAW	3/10	TCY	MIN
TCC (1)	1/2	TCY	MIN	TCC (1)	: AolWA	TAD (1)	1/2	TCY	MAX
TCC (2)	2/5	TCY	MIN	TCC (2)	: PSEN	TAD (2)	1/3	TCY	MAX	TAD (1): AD
TOW	2/15	TCY	MIN			TAFC	1/30	TCY	MIN	TAD (2) : PSEN
TWO	1/15	TCY	MIN			TCA	1/15	TCY	MIN
ToA	0		MIN

• APPROXIMATE VALUES NOT INCLUDING GATE DELAYS.

6-5

AFN-01491A-05