MAX6957AAI+ Maxim Integrated Products, MAX6957AAI+ Datasheet - Page 16

• Manufacturer Part Number: MAX6957AAI+
• Description: IC DRIVER LED PORT 20/28 28-SSOP
• Manufacturer: Maxim Integrated Products

Specifications of MAX6957AAI+

• Display Type: LED
• Configuration: 7, 16, 20 Segment
• Interface: 4-Wire Serial
• Current - Supply: 180µA
• Voltage - Supply: 2.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 28-SSOP
• Number Of Digits: 7
• Number Of Segments: 7, 14, 16
• Low Level Output Current: 18000 uA
• Operating Supply Voltage: 2.5 V to 5.5 V
• Maximum Supply Current: 270 uA
• Maximum Power Dissipation: 727 mW
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Digits Or Characters: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

4-Wire-Interfaced, 2.5V to 5.5V, 20-Port and
28-Port LED Display Driver and I/O Expander
Table 5. Configuration Register Format
X = Don’t care bit.
X = Don’t care bit.
Table 7. Global Current Control (I Data Bit D6) Format
X = Don’t care bit.
X = Don’t care bit.
X = Don’t care bit.
16
Table 6. Shutdown Control (S Data Bit D0) Format
Table 8. Transition Detection Control (M-Data Bit D7) Format
Table 9. Global Segment Current Register Format
Configuration Register
LED DRIVE
FRACTION
controlled by one setting in the Global Current
individually controlled by the settings in the
Normal Operation
______________________________________________________________________________________
Current054 through Current1FE registers
1/16
2/16
3/16
4/16
5/16
Constant-current limits for all digits are
Constant-current limit for each digit is
FUNCTION
FUNCTION
FUNCTION
Shutdown
Disabled
Enabled
Individual Segment
register, 0x02
TYPICAL SEGMENT
FUNCTION
CURRENT (mA)
Global
1.5
4.5
7.5
3
6
ADDRESS CODE
ADDRESS CODE
ADDRESS CODE
(HEX)
(HEX)
(HEX)
0x04
0x04
0x04
0x04
0x04
CODE (HEX)
ADDRESS
0x02
0x02
0x02
0x02
0x02
CODE (HEX)
ADDRESS
D7
D7
D7
M
M
M
0
1
0x04
0x04
D7
X
X
X
X
X
D6
D6
D6
I
I
I
I
I
D6
X
X
X
X
X
D7
M
M
D5
D5
D5
X
X
X
X
X
D5
X
X
X
X
X
D6
0
1
REGISTER DATA
REGISTER DATA
REGISTER DATA
D4
X
X
X
X
X
D4
D4
D4
X
X
X
X
X
D5
X
X
D3
REGISTER DATA
0
0
0
0
0
D3
D3
D4
D3
X
X
X
X
X
X
X
D2
0
0
0
0
1
D3
X
X
D1
D2
D2
0
0
1
1
0
D2
X
X
X
X
X
D2
D0
X
X
0
1
0
1
0
D1
D1
D1
X
X
X
X
X
HEX CODE
D1
X
X
0xX0
0xX1
0xX2
0xX3
0xX4
D0
D0
D0
S
0
1
S
S
D0
S
S