MAX1441 Datasheet, PDF(22/41 Page) Maxim Integrated Products – Automotive, Two-Channel Proximity and Touch Sensor

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MAX1441 Datasheet, PDF (22/41 Pages) Maxim Integrated Products – Automotive, Two-Channel Proximity and Touch Sensor

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Automotive, Two-Channel Proximity and

Touch Sensor

Table 10. Special-Function Register Reset Values

PO0

EIF0

EIE0

EIES0

TCON

TFRQ

TCNT

PI0

PD0

BRKPNT

ICDT0

ICDT1

ICDC

ICDF

ICDB

ICDA

ICDD

MODULE 0

MSB

0000

0111

0000

ssss

0000

LSB

1111

0000

ssss

0000

AFEINTST

SCT

CRNG

WU1

WU2

FEL

FEB

CRSLT1L

CRSLT1H

CRSLT2L

CRSLT2H

AT1H

RT1H

AT2H

RT2H

CO1

CO2

DSB

SSB2

AFEIE

MODULE 1

MSB

0000

0010

0000

0001

0000

LSB

0000

0010

0000

0100

1110

0000

0001

0000

Table 11. Special-Function Register Bit Description

PO0 (00h, 00h)

Initialization

Read/Write Access

DESCRIPTION

Port 0 Output Register (8-Bit Register)

This register is set to 7Fh on all forms of reset.

Unrestricted read/write.

PO0[6:0]

Port 0 Output Register Bits [6:0]. This register stores output data for this port when it is defined as

an output port. Reading from the register returns the contents of the register and does not necessarily

reflect the true state of the port pins. Changing the direction of this port does not change the data con-

tents of the register.

PO0.7

EIF0 (01h, 00h)

Initialization

Read/Write Access

Reserved. Read returns 0.

External Interrupt Flag 0 Register (8-Bit Register)

This register is cleared to 00h on all forms of reset.

Unrestricted read/write.

EIF0[2:0]âIE[2:0]

Interrupt Edge Detect Bits [2:0]. These bits are set when the edge selected by ITx is detected on the

interrupt pin, INTx. Setting any of the bits to 1 generates an interrupt to the CPU if the corresponding

interrupt is enabled. These bits remain set until cleared by software or a reset. It must be cleared by

software before exiting the interrupt source routine or another interrupt is generated as long as the bit

remains set.

EIF0[7:3]

Reserved. Read returns 0.

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