参数资料
型号: MAX6957ATL+T
厂商: Maxim Integrated
文件页数: 19/25页
文件大小: 0K
描述: IC DRVR DSPL LED 40-TQFN
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 2,500
显示器类型: LED
配置: 7、16、20 段
接口: 4 线串行
电流 - 电源: 180µA
电源电压: 2.5 V ~ 5.5 V
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 40-WFQFN 裸露焊盘
供应商设备封装: 40-TQFN-EP(6x6)
包装: 带卷 (TR)
4-Wire-Interfaced, 2.5V to 5.5V, 20-Port and
28-Port LED Display Driver and I/O Expander
Low-Voltage Operation
The MAX6957 operates down to 2V supply voltage
(although the sourcing and sinking currents are not
up initially to at least 2.5V to trigger the device's internal
reset, and also that the serial interface is constrained to
10Mbps.
guaranteed), providing that the MAX6957 is powered
Table 12. Odd Individual Segment Current Format
LED
DRIVE
FRACTION
SEGMENT
CONSTANT
CURRENT WITH
R ISET = 39k Ω (mA)
ADDRESS
CODE (HEX)
D7
D6
D5
D4
D3
D2
D1
D0
HEX CODE
1/16
2/16
3/16
4/16
5/16
6/16
7/16
1.5
3
4.5
6
7.5
9
10.5
0x12 to 0x1F
0x12 to 0x1F
0x12 to 0x1F
0x12 to 0x1F
0x12 to 0x1F
0x12 to 0x1F
0x12 to 0x1F
0
0
0
0
0
0
0
0
0
0
0
1
1
1
0
0
1
1
0
0
1
0
1
0
1
0
1
0
0x0X
0x1X
0x2X
0x3X
0x4X
0x5X
0x6X
8/16
9/16
10/16
11/16
12/16
13/16
14/16
15/16
16/16
12
13.5
15
16.5
18
19.5
21
22.5
24
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
0
1
1
1
1
1
1
1
1
1
0
0
0
0
1
1
1
1
1
0
0
1
1
0
0
1
1
1
0
1
0
1
0
1
0
1
See Table 11.
0x7X
0x8X
0x9X
0xAX
0xBX
0xCX
0xDX
0xEX
0xFX
Table 13. Transition Detection Mask Register
FUNCTION
REGISTER
ADDRESS
(HEX)
READ/
WRITE
D7
D6
D5
REGISTER DATA
D4 D3
D2
D1
D0
Mask
Register
0x06
Read
Write
0
Unchanged
Port
30
mask
Port
29
mask
Port
28
mask
Port
27
mask
Port
26
mask
Port
25
mask
Port
24
mask
X = Don’t care bit.
MODE
ADDRESS CODE
(HEX)
D7
D6
D5
REGISTER DATA
D4 D3
D2
D1
D0
Normal Operation
Display Test Mode
0x07
0x07
X
X
X
X
X
X
X
X
X
X
X
X
X
X
0
1
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