MK712

Touch Screen Controller

MDS 712 I

11

Revision 100899

Printed 11/16/00

Integrated Circuit Systems, Inc.•525 Race St.•San Jose•CA•95126•(408)295-9800tel•www.icst.com

I C R O

Register Interface Timing

#

Symbol

Description

Min

Max

Unit

Note

READ AND WRITE CYCLES

READ AND WRITE CYCLES

READ AND WRITE CYCLES

1

TRASC

Address Setup to CS Low

5

ns

2

TRAHC

Address Hold from CS High

0

ns

3

TRCCY

CS High to CS Low

40

ns

READ CYCLE ONLY

READ CYCLE ONLY

READ CYCLE ONLY

4

TRSCR

CS Low to RD Low

10

ns

5

TRRD

RD Pulse Width

40

ns

6

TRCHR1

RD High to CS High

0

ns

7

TRCHR2

RD High to CS Low

40

ns

8

TRDC

CS Low to Data

35

ns

9

TRDR

RD Low to Data

35

ns

10

TRDHC

CS High to Data Release

2

20

ns

1

11

TRDHR

RD High to Data Release

2

20

ns

1

WRITE CYCLE ONLY

WRITE CYCLE ONLY

WRITE CYCLE ONLY

12

TRCSW

CS Low to WR Low

10

ns

13

TRWR

WR Pulse Width

40

ns

14

TRCHW

WR High to CS High

0

ns

2

15

TRWH

WR High to CS Low

40

ns

16

TRWCY

WR High to WR Low

40

ns

17

TRDW

Data Setup to WR High

15

ns

3

18

TRDHW

Data Hold from WR High

15

ns

4

19

TRDWC

Data Setup to CS High

15

ns

3

20

TRDHWC

Data Hold from CS High

15

ns

4

Notes:

1. RD edges may precede or follow CS edges.

2. WR edges may precede or follow CS edges.

3. Either TRDW or TRDWC specification must be met.

4. Either TRDHW or TRDHWC specification must be met.

5. It is not permitted to have both RD and WR low at the same time.