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ADVANCE INFORMATION

8x930Ax UNIVERSAL SERIAL BUS (USB) MICROCONTROLLER

5.4.4

DEFINITION OF REAL-TIME WAIT SYMBOLS

5.4.5

REAL-TIME WAIT FUNCTION AC CHARACTERISTICS

Table 12. Real-time Wait Timing Symbol Definitions

Signals

Conditions

A

Address

L

Low

D

Data

X

Hold

C

WCLK

V

Setup

YWAIT#

WWR#

R

RD#/PSEN#

Table 13. Real-time Wait AC Timing Specifications

Symbol

Parameter

F

(1) (2)

Units

Min

Typ

Max

T

CLYV

Wait Clock Low to Wait Setup

0

0.5 T

ns

T

CLYX

Wait Hold after Wait Clock Low

(W)T

(0.5+W)T

ns

T

RLYV

PSEN# or RD# Low to Wait Setup

0

0.5 T

ns

T

RLYX

Wait Hold after PSEN# or RD# Low

(W)T

(0.5+W)T

ns

T

WLYV

WR# Low to Wait Setup

0

0.5 T

ns

T

WLYX

Wait Hold after WR# Low

(W)T

(0.5+W)T

ns

NOTES:

1.

W = 0, 1, 2, ... is the number of real-time wait states.

2.

Real-time Wait function has a critical timing for instruction read. It is not advisable to use this feature

for instruction read during page mode.