MAX7370 Maxim, MAX7370 Datasheet - Page 24

• 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 13. Key-Switch Array Size Register (0x30)
X = Don’t care.
Table 14. LED Driver Enable Register (0x31)
No rows are key switches
ROW0 is a key switch
ROW0 to ROW1 are key switches
ROW0 to ROW2 are key switches
ROW0 to ROW3 are key switches
ROW0 to ROW4 are key switches
ROW0 to ROW5 are key switches
ROW0 to ROW6 are key switches
ROW0 to ROW7 are key switches
No columns are key switches
COL0 is a key switch
COL0 to COL1 are key switches
COL0 to COL2 are key switches
COL0 to COL3 are key switches
COL0 to COL4 are key switches
COL0 to COL5 are key switches
COL0 to COL6 are key switches
COL0 to COL7 are key switches
Power-up default setting
REGISTER BIT
8 x 8 Key-Switch Controller and LED Driver/GPIOs
D[7:4]
D3
D2
D1
D0
2
REGISTER DESCRIPTION
C Interface and High Level of ESD Protection
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DESCRIPTION
Reserved
COL7
COL6
COL5
COL4
VALUE
0000
0
1
0
1
0
1
0
1
—
GPIO function
LED driver enable
GPIO function
LED driver enable
GPIO function
LED driver enable
GPIO function
LED driver enable
D7
0
0
0
0
0
0
0
0
1
1
D6
X
0
0
0
0
1
1
1
1
1
ROWS
X
FUNCTION
D5
X
0
0
1
1
0
0
1
1
1
REGISTER DATA
D4
0
1
0
1
0
1
0
1
X
1
D3
0
0
0
0
0
0
0
0
1
1
MAX7370
D2
COLUMNS
0
0
0
0
1
1
1
1
X
1
DEFAULT VALUE
X
D1
0
0
1
1
0
0
1
1
X
1
0000
0
0
0
0
D0
X
0
1
0
1
0
1
0
1
1