MAX7370 Maxim, MAX7370 Datasheet - Page 22

• Manufacturer Part Number: MAX7370
• Description: The MAX7370 I²C-interfaced peripheral provides microprocessors with management of up to 64 key switches, with optional GPIO and PWM-controlled LED drivers
• Manufacturer: Maxim

with I
Table 9. Key-Switch Debounce Register (0x02)
X = Don’t care.
Table 10. Key-Switch Interrupt Register (0x03)
X = Don’t care.
2ms
4ms
6ms
28ms
30ms
32ms
2ms
4ms
6ms
28ms
30ms
32ms
Power-on default (32ms)
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
8 x 8 Key-Switch Controller and LED Driver/GPIOs
REGISTER DESCRIPTION
DEBOUNCE TIME
REGISTER DESCRIPTION
2
C Interface and High Level of ESD Protection
⋮
⋮
���������������������������������������������������������������� Maxim Integrated Products 22
⋮
⋮
D7
0
0
0
1
1
1
1
RELEASE DEBOUNCE TIME
D6
0
0
0
1
1
1
1
D7
0
0
0
0
1
1
1
FIFO-BASED INT
X
X
Not all zero
D5
0
0
1
0
1
1
1
D6
0
0
0
1
0
1
1
X
X
REGISTER DATA
D4
0
1
0
1
0
1
1
D5
0
1
0
1
0
1
0
REGISTER DATA
D4
0
0
0
0
1
1
1
D3
0
0
0
1
1
1
1
PRESS DEBOUNCE TIME
D3
0
0
0
0
1
1
1
TIME-BASED INT
D2
0
0
0
1
1
1
1
Not all zero
D2
MAX7370
X
X
0
0
0
0
1
1
1
X
X
D1
0
0
1
0
1
1
1
D1
0
0
0
1
0
1
1
D0
0
1
0
1
0
1
1
D0
0
0
1
0
1
0
1