33975 Datasheet, PDF (16/32 Pages) Freescale Semiconductor, Inc – Multiple Switch Detection Interface with Suppressed Wake-Up and 32mA Wetting Current

FUNCTIONAL DEVICE OPERATION
OPERATIONAL MODES
Table 9. Wetting Current Timer Enable Command
Wetting Current Timer Commands
Command Bits
23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
0 0 0 0 0 1 1 1 X X X X X X X X sp7 sp6 sp5 sp4 sp3 sp2 sp1 sp0
0 0 0 0 1 0 0 0 X X sg1 sg1 sg1 sg1 sg9 sg8 sg7 sg6 sg5 sg4 sg3 sg2 sg1 sg0
3210
TRI-STATE REGISTER
The tri-state command is use to set the SPn or SGn input
node as high impedance (refer to Table 10). By setting the
Tri-State Register bit to logic [1], the input will be high
impedance regardless of the metallic command setting. The
Table 10. Tri-State Command
comparator on each input remains active. This command
allows the use of each input as a comparator with a 4.0 V
threshold. The MCU may change or update the Tri-State
Register via software at any time in Normal mode.
Tri-State Commands
Command Bits
23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
0 0 0 0 1 0 0 1 X X X X X X X X sp7 sp6 sp5 sp4 sp3 sp2 sp1 sp0
0 0 0 0 1 0 1 0 X X sg13 sg12 sg11 sg10 sg9 sg8 sg7 sg6 sg5 sg4 sg3 sg2 sg1 sg0
33975
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Analog Integrated Circuit Device Data
Freescale Semiconductor