MAX6954AAX-T Maxim Integrated Products, MAX6954AAX-T Datasheet - Page 30

• Manufacturer Part Number: MAX6954AAX-T
• Description: LED Drivers 7-, 14-, 16-Segment LED Display Driver,
• Manufacturer: Maxim Integrated Products

Specifications of MAX6954AAX-T

• Number Of Digits: 16
• Number Of Segments: 128
• Low Level Output Current: 935000 uA
• High Level Output Current: 55000 uA
• Operating Supply Voltage: 2.7 V to 5.5 V
• Maximum Supply Current: 30000 uA
• Maximum Power Dissipation: 941 mW
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• Package / Case: SSOP-36
• Minimum Operating Temperature: - 40 C

4-Wire Interfaced, 2.7V to 5.5V LED Display
Driver with I/O Expander and Key Scan
Table 34. Key Debounced Register Format
Table 35. Key Pressed Register Format
Table 36. Display Test Register
30
Normal Operation
Display Test
DEBOUNCED
Debounced
Debounced
Debounced
Debounced
REGISTER
REGISTER
PRESSED
Register
Register
Register
Register
Pressed
Register
Pressed
Register
Pressed
Register
Pressed
Register
______________________________________________________________________________________
Key_A
Key_B
Key_C
Key_D
Key_A
Key_B
Key_C
Key_D
KEY
KEY
MODE
ADDRESS
ADDRESS
CODE
(HEX)
CODE
0x8A
0x8B
0x88
0x89
(HEX
0x8C
0x8D
0x8E
0x8F
ADDRESS
CODE
(HEX)
0x07
0x07
SW_A7
SW_B7
SW_C7
SW_D7
SW_A7
SW_B7
SW_C7
SW_D7
D7
D7
D7
X
X
SW_C6
SW_D6
SW_A6
SW_B6
SW_C6
SW_D6
SW_A6
SW_B6
D6
D6
D6
X
X
SW_A5
SW_B5
SW_C5
SW_D5
SW_C5
SW_D5
SW_A5
SW_B5
D5
D5
D5
X
X
SW_C4
SW_D4
SW_A4
SW_B4
SW_C4
SW_D4
REGISTER DATA
SW_A4
SW_B4
REGISTER DATA
D4
D4
REGISTER DATA
D4
X
X
SW_A3
SW_B3
SW_C3
SW_D3
SW_C3
SW_D3
SW_A3
SW_B3
D3
D3
D3
X
X
SW_C2
SW_D2
SW_A2
SW_B2
SW_A2
SW_B2
SW_C2
SW_D2
D2
D2
D2
X
X
SW_A1
SW_B1
SW_C1
SW_D1
SW_A1
SW_B1
SW_C1
SW_D1
D1
D1
D1
X
X
SW_A0
SW_B0
SW_C0
SW_D0
SW_A0
SW_B0
SW_C0
SW_D0
D0
D0
D0
0
1