LM320240CFW datasheet(6/11 Pages) TOPWAY

6 / 11 page

TOPWAY

LCD Module User Manual

LM320240CFW

URL: www.topwaydisplay.com

www.topwaysz.com

Document Name: LM320240CFW-Manual-Rev0.1.doc

Page: 6 of 11

3.3

AC Characteristics

3.3.1 8080 Mode

VSS=0V, VDD=3.3V, TOP=25°C

Item

Symbol

MIN.

TYP.

MAX.

Unit

/CS setup time

A0 setup time

/WR, /RD falling edge to /WAIT driven low

1.6

D[7:0] setup time to /WR rising edge (write cycle)

(*2)

/RD falling edge to D[7:0] driven (read cycle)

/CS hold time

A0 hold time

/RD, /WR rising edge to WAIT# high impedance

1.6

D[7:0] hold time from /WR rising edge (write cycle)

6.5

D[7:0] hold time from /CS rising edge (read cycle)

t10

2.4

/WAIT rising edge to valid Data

t11

(*3)

/RD, /WR pulse inactive time

t12

(*4)

/WAIT pulse active time

t13

(*5)

Note:

*1. Ts

= System clock period

*2. t4min

= 2Ts + 5

*3. t11max = 1Ts + 7 (for 5.0V)

*4. t12min = 1Ts (for a read cycle followed by a read or write cycle)

= 2Ts + 2 (for a write cycle followed by a write cycle)

= 5Ts + 2 (for a write cycle followed by a read cycle)

*5. t13max = 4Ts + 2

*6. Input signal rise/fall time should be less than 4.5ns

*7. for details, please see the S1D13700 data sheet

Bus Timing Diagram

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