MK712
TOUCH SCREEN CONTROLLER TOUCH SCREEN CONTROL
IDT™
TOUCH SCREEN CONTROLLER 13
MK712 REV M 122109
Register Interface Timing
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.
Number Symbol Description Min. Max. Units Note
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
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
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
