参数资料
型号: MAX6966ATE+T
厂商: Maxim Integrated
文件页数: 21/29页
文件大小: 0K
描述: IC LED DRIVER LINEAR 16-TQFN
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 2,500
恒定电流:
拓扑: 开路漏极,PWM
输出数: 10
内部驱动器:
类型 - 主要: 背光
类型 - 次要: RGB,白色 LED
频率: 270kHz ~ 450kHz
电源电压: 2.25 V ~ 3.6 V
输出电压: 7V
安装类型: 表面贴装
封装/外壳: 16-WFQFN 裸露焊盘
供应商设备封装: 16-TQFN(3x3)
包装: 带卷 (TR)
工作温度: -40°C ~ 125°C
MAX6966/MAX6967
10-Port Constant-Current LED Drivers and I/O
Expanders with PWM Intensity Control
Serial Interface
The MAX6966/MAX6967 communicate through an SPI-
compatible 4-wire serial interface. The interface has
three inputs: clock (SCLK), chip select ( CS ), and data
in (DIN), and one output, data out (DOUT). CS must be
low to clock data into or out of the device, and DIN
must be stable when sampled on the rising edge of
SCLK. DOUT is stable on the rising edge of SCLK.
Note that the SPI protocol expects DOUT to be high
impedance when the MAX6966/MAX6967 are not being
accessed; DOUT on the MAX6966/MAX6967 is never
high impedance. Go to www.maxim-ic.com/an1879 for
ways to convert the MAX6966/MAX6967 to tri-state,
if required.
SCLK and DIN can be used to transmit data to other
peripherals. The MAX6966/MAX6967 ignore all activity
on SCLK and DIN except when CS is low.
Table 11. Serial-Data Format
Control and Operation Using the 4-Wire
Interface
Controlling the MAX6966/MAX6967 requires sending a
16-bit word. The first byte, D15 through D8, is the com-
mand, and the second byte, D7 through D0, is the data
byte ( Table 11 ).
Connecting Multiple MAX6966/MAX6967s
to the 4-Wire Bus
Multiple MAX6966/MAX6967s can be interfaced to a
common SPI bus by connecting DIN inputs together,
connecting SCLK inputs together, and providing an
individual CS per MAX6966/MAX6967 device ( Figure
8). This connection works regardless of the configura-
tion of DOUT/OSC, but does not allow the MAX6966/
MAX6967s to be read.
D15
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
R/W
MSB
ADDRESS
LSB
MSB
DATA
LSB
CS3
CS2
μ C
CS1
MOSI
CS1
DIN
MAX6966
MAX6967
CS2
DIN
MAX6966
MAX6967
CS3
DIN
MAX6966
MAX6967
SCLK
SCLK
SCLK
SCLK
Figure 8. MAX6966/MAX6967 Multiple CS Connection
Maxim Integrated
21
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