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3.5.6 Write Access to Control Registers

Figure 10. Write Access to Control Registers

Notes: 1. Setup time input signals to falling edge WRN (Intel mode) or RDN (Motorola mode with low active strobe) or rising edge RDN (Mo-

torola mode with high active strobe)

Symbol

Parameter

Min.

Typ.

Max.

Unit

Setup time A6-0, (Note 1)

10

ns

Setup time BHEN, PCSN0, PCS1, DMAACKNR, WRN (only

Motorola mode),

(Note 1)

0ns

hold time A6-0, BHEN, PCSN0, PCS1, DMAACKNT, WRN

(only Motorola mode) to rising edge WRN (Intel mode) or

RDN (Motorola mode, strobe active low) or falling edge RDN

(Motorola mode, strobe active high)

0ns

pulse width WRN (Intel mode) or RDN (Motorola mode)

20

ns

setup time D15-0 to end of write access

10

ns

hold time D15-0 to end of write access

5

ns

delay WRN or RDN to DMAREQT low

20

ns

A6-0, BHEN,

PCSN0, PCS1,

DMAACKNT,

WRN (Motorola m ode)

WRN (Intel m ode)

RDN (Motorola m ode)

D15-0

DMAREQT