参数资料
型号: MAX6955ATL+T
厂商: Maxim Integrated
文件页数: 8/43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、14、16 段
接口: I²C
电流 - 电源: 22mA
电源电压: 2.7 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)
MAX6955
2-Wire Interfaced, 2.7V to 5.5V LED Display
Driver with I/O Expander and Key Scan
Table 2. Connection Scheme for Eight 16-Segment Digits
DIGIT O0
O1
O2
O3
O4
O5
O6
O7
O8
O9
O10
O11
O12
O13
O14
O15
O16
O17
O18
0
1
2
3
4
5
6
7
CCO
a1
a1
a1
a1
a1
a1
CC1
a2
a2
a2
a2
a2
a2
a1
a1
CC2
b
b
b
b
a2
a2
CC3
c
c
c
c
b
b
b
b
CC4
d1
d1
c
c
c
c
CC5
d2
d2
d1
d1
d1
d1
d1
d1
CC6
d2
d2
d2
d2
d2
d2
CC7
e
e
e
e
e
e
e
e
f
f
f
f
f
f
f
f
g1
g1
g1
g1
g1
g1
g1
g1
g2
g2
g2
g2
g2
g2
g2
g2
h
h
h
h
h
h
h
h
i
i
i
i
i
i
i
i
j
j
j
j
j
j
j
j
k
k
k
k
k
k
k
k
l
l
l
l
l
l
l
l
m
m
m
m
m
m
m
m
dp
dp
dp
dp
dp
dp
dp
dp
Table 3. Connection Scheme for Eight 14-Segment Digits
DIGIT O0
O1
O2
O3
O4
O5
O6
O7
O8
O9
O10
O11
O12
O13
O14
O15
O16
O17
O18
0
1
2
3
4
5
6
7
CCO
a
a
a
a
a
a
CC1
a
a
CC2
b
b
b
b
CC3
c
c
c
c
b
b
b
b
CC4
d
d
c
c
c
c
CC5
d
d
d
d
d
d
CC6
CC7
e
e
e
e
e
e
e
e
f
f
f
f
f
f
f
f
g1
g1
g1
g1
g1
g1
g1
g1
g2
g2
g2
g2
g2
g2
g2
g2
h
h
h
h
h
h
h
h
i
i
i
i
i
i
i
i
j
j
j
j
j
j
j
j
k
k
k
k
k
k
k
k
l
l
l
l
l
l
l
l
m
m
m
m
m
m
m
m
dp
dp
dp
dp
dp
dp
dp
dp
Table 4. Connection Scheme for Sixteen 7-Segment Digits
DIGIT O0
0, 0a CC0
O1
O2
1a
O3
O4
1b
O5
1c
O6
1d
O7
1dp
O8
1e
O9
1f
O10
1g
O11
2a
O12
2b
O13
2c
O14
2d
O15
2e
O16
2f
O17
2g
O18
2dp
1, 1a
2, 2a
3, 3a
4, 4a
5, 5a
6, 6a
7, 7a
1a
1a
1a
1a
1a
1a
CC1
1a
CC2
1b
1b
1b
1b
CC3
1c
1c
1c
1c
1b
1b
1b
CC4
1d
1d
1c
1c
1c
CC5
1dp
1dp
1d
1d
1d
1d
1d
CC6
1dp
1dp
1dp
1dp
1dp
CC7
1e
1e
1e
1e
1e
1e
1e
1f
1f
1f
1f
1f
1f
1f
1g
1g
1g
1g
1g
1g
1g
2a
2a
2a
2a
2a
2a
2a
2b
2b
2b
2b
2b
2b
2b
2c
2c
2c
2c
2c
2c
2c
2d
2d
2d
2d
2d
2d
2d
2e
2e
2e
2e
2e
2e
2e
2f
2f
2f
2f
2f
2f
2f
2g
2g
2g
2g
2g
2g
2g
2dp
2dp
2dp
2dp
2dp
2dp
2dp
Message Format for Writing
A write to the MAX6955 comprises the transmission of
the MAX6955’s slave address with the R/ W bit set to
zero, followed by at least 1 byte of information. The first
byte of information is the command byte, which deter-
mines which register of the MAX6955 is to be written by
the next byte, if received. If a STOP condition is detect-
ed after the command byte is received, then the
MAX6955 takes no further action (Figure 7) beyond
storing the command byte.
8
Any bytes received after the command byte are data
bytes. The first data byte goes into the internal register of
the MAX6955 selected by the command byte (Figure 8).
If multiple data bytes are transmitted before a STOP
condition is detected, these bytes are generally stored
in subsequent MAX6955 internal registers because the
command byte address generally autoincrements
(Table 6) (Figure 9).
Maxim Integrated
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