MAX7370 datasheet(22/37 Pages) MAXIM

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�� Maxim Integrated Products 22

MAX7370

8 x 8 Key-Switch Controller and LED Driver/GPIOs

with I2C Interface and High Level of ESD Protection

Table 9. Key-Switch Debounce Register (0x02)

Table 10. Key-Switch Interrupt Register (0x03)

X = Don’t care.

DEBOUNCE TIME

RELEASE DEBOUNCE TIME

PRESS DEBOUNCE TIME

2ms

4ms

6ms

⋮

28ms

30ms

32ms

2ms

4ms

6ms

⋮

28ms

30ms

32ms

Power-on default (32ms)

FIFO-BASED INT

TIME-BASED INT

Power-up default setting

All INT disabled

Time-based INT disabled

INT asserts every debounce cycle

INT asserts every 2 debounce cycles

⋮

INT asserts every 29 debounce cycles

INT asserts every 30 debounce cycles

INT asserts every 31 debounce cycles

FIFO-based INT disabled

INT asserts when the FIFO has 2 key events

INT asserts when the FIFO has 4 key events

⋮

INT asserts when the FIFO has 10 key events

INT asserts when the FIFO has 12 key events

INT asserts when the FIFO has 14 key events

Both time-based and FIFO-based interrupts active

Not all zero

MAX7370 Datasheet(PDF) 22 Page - Maxim Integrated Products

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