6

FIGURE 5. HOLD

NOTE: READY must remain stable during setup and hold times.

FIGURE 6. READ OPERATION WITH WAIT CYCLE (TYPICAL) - SAME READY TIMING APPLIES TO WRITE

NOTE: IO/M is also floating during this time.

FIGURE 7. INTERRUPT AND HOLD

tHDS

T2

CLK

HOLD

HLDA

BUS

(ADDRESS, CONTROLS)

tHDH

tHACK

tHABF

T2

THOLD

THOLD

T1

tHABE

ADDRESS

ADDRESS

DATA IN

tAC

tARY

tLRY

tLC

tRYH

tRYS

tRYS tRYH

tCC

tRD

tLDR

tAFR

tLA

tLL

tAL

tAD

tLCK

T1

T2

TWAIT

T3

T3

tCL

tRAE

tRDH

tCA

CLK

ALE

RD/INTA

READY

tHABE

tHABF

tHACK

tHDH

tHDS

tINH

tINS

INTR

HOLD

HLDA

INTR

RD

CALL INST.

A0-7

A8-15

T1

T2

T3

T4

T5

T6

THOLD T1

T2

BUS FLOATING (NOTE)

HS-80C85RH