参数资料
型号: MAX6969EVKIT+
厂商: Maxim Integrated Products
文件页数: 8/12页
文件大小: 0K
描述: KIT EVAL FOR MAX6969
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 1
电流 - 输出 / 通道: 55mA
输出及类型: 16,非隔离
输出电压: 5.5V
特点: 6个 7 段显示器,USB 接口
输入电压: 3 ~ 5.5 V
已供物品: 板,CD
已用 IC / 零件: MAX6969
16-Port, 5.5V Constant-Current LED Driver
CLK is the serial-clock input, which shifts data at DIN
LE
OUT_
LE
OUT_
CLK
OUT_
CLK
t LRF
t LRR
t CRF
t CRR
into the MAX6969 16-bit shift register on its rising edge.
LE is the latch load input of the MAX6969 that transfers
data from the MAX6969 16-bit shift register to its 16-bit
latch when LE is high (transparent latch), and latches
the data on the falling edge of LE (Figure 2).
The fourth input provides output-enable control of the
output drivers. OE is high to force outputs
OUT0 –OUT15 high impedance, without altering the
contents of the output latches, and low to enable out-
puts OUT0 –OUT15 to follow the state of the output
latches.
OE is independent of the operation of the serial inter-
face. Data can be shifted into the serial-interface shift
register and latched, regardless of the state of OE .
DOUT is the serial-data output, which shifts data out
from the MAX6969’s 16-bit shift register on the rising
edge of CLK. Data at DIN is propagated through the
shift register and appears at DOUT 16 clock cycles later.
OUT_
Figure 3. LE and CLK to OUT_ Timing
Table 1. 4-Wire Serial-Interface Truth Table
SERIAL
DATA
INPUT
DIN
CLOCK
INPUT
CLK
D 0
SHIFT-REGISTER
CONTENTS
D 1 D 2 … D n-1 D n
LOAD
INPUT
LE
D 0
LATCH CONTENTS
D 1 D 2 … D n-1 D n
BLANKING
INPUT
OE
D 0
OUTPUT CONTENTS
D 1 D 2 … D n-1 D n
H
L
X
H
L
R 0
R 0
R 0
R 1
R 1
R 1
R 2
… R n-2 R n-1
… R n-2 R n-1
… R n-1 R n
X
X
X
X
X
L
R 0
R 1
R 2
— R n-1 R n
P 0
P 1
P 2
… P n-1 P n
H
P 0
P 1
P 2
… P n-1 P n
L
P 0
P 1
P 2
… P n-1 P n
X
X
X
X
X
H
Hi-Z Hi-Z Hi-Z … Hi-Z Hi-Z
L = Low-logic level.
H = High-logic level.
X = Don’t care.
P = Present state.
R = Previous state.
Hi-Z = High impedance.
8
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