MAX6957AAX+T Maxim Integrated Products, MAX6957AAX+T Datasheet - Page 19

• Manufacturer Part Number: MAX6957AAX+T
• Description: IC DRVR DSPL LED 36-SSOP
• Manufacturer: Maxim Integrated Products

Specifications of MAX6957AAX+T

• 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: 36-SSOP
• Number Of Segments: 28
• Low Level Output Current: 18 mA
• Operating Supply Voltage: 2.5 V to 5.5 V
• Maximum Supply Current: 230 uA
• Maximum Power Dissipation: 941 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: Details

The MAX6957 operates down to 2V supply voltage
(although the sourcing and sinking currents are not
guaranteed), providing that the MAX6957 is powered
Table 12. Odd Individual Segment Current Format
X = Don’t care bit.
Table 13. Transition Detection Mask Register
FRACTION
FUNCTION
DRIVE
Register
10/16
11/16
12/16
13/16
14/16
15/16
16/16
Display Test Mode
LED
1/16
2/16
3/16
4/16
5/16
6/16
7/16
8/16
9/16
Normal Operation
Mask
28-Port LED Display Driver and I/O Expander
MODE
4-Wire-Interfaced, 2.5V to 5.5V, 20-Port and
R
REGISTER
ADDRESS
CURRENT WITH
ISET
______________________________________________________________________________________
(HEX)
0x06
CONSTANT
SEGMENT
= 39kΩ (mA)
10.5
13.5
16.5
19.5
22.5
1.5
4.5
7.5
12
15
18
21
24
3
6
9
Low-Voltage Operation
ADDRESS CODE
WRITE
READ/
Read
Write
(HEX)
0x07
0x07
CODE (HEX)
0x12 to 0x1F
0x12 to 0x1F
0x12 to 0x1F
0x12 to 0x1F
0x12 to 0x1F
0x12 to 0x1F
0x12 to 0x1F
0x12 to 0x1F
0x12 to 0x1F
0x12 to 0x1F
0x12 to 0x1F
0x12 to 0x1F
0x12 to 0x1F
0x12 to 0x1F
0x12 to 0x1F
0x12 to 0x1F
Unchanged
ADDRESS
D7
0
D7
X
X
mask
Port
D6
D7
30
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
D6
X
X
up initially to at least 2.5V to trigger the device's internal
reset, and also that the serial interface is constrained to
10Mbps.
D6
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
mask
Port
D5
29
D5
X
X
D5
REGISTER DATA
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
mask
REGISTER DATA
Port
D4
D4
28
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
D4
X
X
D3
mask
Port
D3
27
See Table 11.
D3
X
X
D2
mask
D1
Port
D2
26
D2
X
X
D0
mask
Port
D1
D1
25
X
X
HEX CODE
0xAX
0xBX
0xCX
0xDX
0x0X
0x1X
0x2X
0x3X
0x4X
0x5X
0x6X
0x7X
0x8X
0x9X
0xEX
0xFX
mask
Port
D0
D0
24
0
1
19