MAX7365 Maxim, MAX7365 Datasheet - Page 6

• Manufacturer Part Number: MAX7365
• Description: The MAX7365 is an I²C-interfaced peripheral that provides microprocessors with management of up to 56 key switches
• Manufacturer: Maxim

BUMP
C5
D1
D2
D3
D4
D5
E1
E2
E3
E4
E5
SDA
SCL
INT
GPIO4
GPIO1
GPIO3
GPIO2
NAME
ROW1
ROW0
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GND
SDA
V
SCL
INTERFACE
INT
TIMEOUT
DD
BUS
I
MAX7365
2
C
Positive Supply Voltage. Bypass to GND with a 0.1FF capacitor as close as possible to the device.
I
General-Purpose Input/Output Port 4
General-Purpose Input/Output Port 1
Row 0 Input from Key Matrix or General-Purpose Input
Active-Low Key-Switch Interrupt Output. INT is open drain and requires a pullup resistor.
I
Ground
Row 1 Input from Key Matrix or General-Purpose Input
General-Purpose Input/Output Port 3
General-Purpose Input/Output Port 2
2
2
Key-Switch Controller with GPIO Ports
C-Compatible Serial-Data Input/Output
C-Compatible Serial-Clock Input
OSCILLATOR
REGISTERS FIFO
CONTROL
POR
LOGIC
LOGIC
SCAN
GPIO
KEY-
1MHz I
CURRENT DETECT
COLUMN ENABLE
ROW ENABLE
ROW DETECT
GPI ENABLE
GPI ENABLE
GPI INPUT
GPI INPUT
FUNCTION
2
Pin Description (continued)
C-Interfaced 8 x 7
CURRENT
COLUMN
SOURCE
DRIVES/
DRIVES/
ROW
GPI
GPI
Functional Diagram
GPIO0
GPIO1
GPIO2
GPIO3
GPIO4
COL0
COL1
COL2
COL3
COL4
COL5
COL6
ROW0
ROW1
ROW2
ROW3
ROW4
ROW5
ROW6
ROW7
MAX7365