8
PIN ASSIGNMENT
Table 3-1 (continued). Pin Descriptions
Pin #
Pin Name
I/O
Description
19
SCAN2_15
I/O
Matrix scan line; 16 mA, internal 33k pull-down
20
SCAN2_16
I/O
Matrix scan line; 16 mA, internal 33k pull-down
21
SCAN2_17
I/O
Matrix scan line; 16 mA, internal 33k pull-down
22
SCAN2_18
I/O
Matrix scan line; 16 mA, internal 33k pull-down
23
EEP_CS
O
Chip select, external EEPROM; 2 mA
24
EEP_DOUT
I
EEPROM data out; connect to EEPROM DOUT pin;
2 mA
25
VDD_ANA
PWR
Analog power; connect to +5V
26
XTAL2
O
Crystal oscillator; XTAL-out
27
XTAL1
I
Crystal oscillator; XTAL-in
28
GND_ANA
PWR
Analog Ground
29
SCAN2_3
I/O
Matrix scan line; 16mA, internal 33k pull-down
30
SCAN2_2
I/O
Matrix scan line; 16mA, internal 33k pull-down
31
SCAN2_1
I/O
Matrix scan line; 16mA, internal 33k pull-down
32
PW_SWITCH
O
Power switch control. Active low.
33
GND
PWR
Ground; VSS pad
Содержание AU9412EEP
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