MAX7359 Maxim, MAX7359 Datasheet - Page 12

• Manufacturer Part Number: MAX7359
• Description: The MAX7359 I²C interfaced peripheral provides microprocessors with management of up to 64 key switches
• Manufacturer: Maxim

2-Wire Interfaced Low-EMI
Key Switch Controller/GPO
Table 7. Ports Register Format (0x04)
Table 8. Autorepeat Register Format (0x05)
12
Autorepeat is disabled
Autorepeat is enabled
Key-switch autorepeat delay is 8 debounce cycles
Key-switch autorepeat delay is 16 debounce cycles
Key-switch autorepeat delay is 24 debounce cycles
Key-switch autorepeat delay is 112 debounce cycles
Key-switch autorepeat delay is 120 debounce cycles
Key-switch autorepeat delay is 128 debounce cycles
Key-switch autorepeat frequency is 4 debounce cycles
Key-switch autorepeat frequency is 8 debounce cycles
Key-switch autorepeat frequency is 12 debounce cycles
Key switch autorepeat frequency is 32 debounce cycles
Power-up default setting
______________________________________________________________________________________
REGISTER BIT
D7
D6
D5
D4
D3
D2
D1
D0
REGISTER DESCRIPTION
INT Port Control
PORT 7 Control
PORT 6 Control
PORT 5 Control
PORT 4 Control
PORT 3 Control
PORT 2 Control
DESCRIPTION
Reserved
VALUE
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
ENABLE
.
.
.
.
.
.
D7
0
1
1
1
1
1
1
1
1
1
1
1
0
Clear port 7 low
Set port 7 high (high impedance)
Clear port 6 low
Set port 6 high (high impedance)
Clear port 5 low
Set port 5 high (high impedance)
Clear port 4 low
Set port 4 high (high impedance)
Clear port 3 low
Set port 3 high (high impedance)
Clear port 2 low
Set port 2 high (high impedance)
Clear port INT low
Set port INT high (high impedance)
AUTOREPEAT RATE
AUTOREPEAT RATE
D6
X
X
X
X
X
X
X
0
0
0
1
0
FUNCTION
D5
X
X
X
X
X
X
X
0
0
1
1
0
REGISTER DATA
—
D4
X
X
X
X
X
X
X
0
1
0
1
0
D3
X
0
0
0
1
1
1
X
X
X
X
0
AUTOREPEAT DELAY
AUTOREPEAT DELAY
D2
DEFAULT VALUE
X
0
0
0
1
1
1
X
X
X
X
0
D1
X
X
X
X
X
0
0
1
0
1
1
0
1
1
1
1
1
1
1
0
D0
X
0
1
0
1
0
1
X
X
X
X
0