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| 型号： | MAX6955AAX+T |
| 厂商： | Maxim Integrated |
| 文件页数： | 6/43页 |
| 文件大小： | 0K |
| 描述： | IC DRVR DSPL LED 36-SSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1,000 |
| 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： | 36-BSOP（0.295"，7.50mm 宽） |
| 供应商设备封装： | 36-SSOP |
| 包装： | 带卷 (TR) |
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MAX6955
2-Wire Interfaced, 2.7V to 5.5V LED Display
Driver with I/O Expander and Key Scan
Pin Description
SSOP
1, 2,
34, 35
3
4
5
6
PIN
TQFN-EP
36, 37,
33, 34
38
39
40
1
NAME
P0–P3
AD0
SDA
SCL
AD1
FUNCTION
General-Purpose I/O Ports (GPIOs). GPIO can be configured as logic inputs or open-drain
outputs. Enabling key scanning configures some or all ports P0–P3 as key-switch matrix inputs
with internal pullup (Key_A through Key_D).
Address Input 0. Sets device slave address. Connect to GND, V+, SCL, or SDA to give four
logic combinations. See Table 5.
I 2 C-Compatible Serial Data I/O
I 2 C-Compatible Serial Clock Input
Address Input 1. Sets device slave address. Connect to GND, V+, SCL, or SDA to give four
logic combinations. See Table 5.
Digit/Segment Drivers. When acting as digit drivers, outputs O0 to O7 sink current from the
7–15,
22–31
2–10,
21–30
O0–O18
display common cathodes. When acting as segment drivers, O0 to O18 source current to the
display anodes. O0 to O18 are high impedance when not being used as digit or segment
drivers.
16, 18
17
19, 21
20
32
33
36
—
—
12, 13, 15
14
16, 18, 19
17
31
32
35
11, 20
—
GND
ISET
V+
OSC
BLINK
OSC_OUT
P4/ IRQ
N.C.
EP
Ground
Segment Current Setting. Connect ISET to GND through series resistor RSET to set the peak
current.
Positive Supply Voltage. Bypass V+ to GND with a 47μF bulk capacitor and a 0.1μF ceramic
capacitor.
Multiplex Clock Input. To use internal oscillator, connect capacitor CSET from OSC to GND.
To use external clock, drive OSC with a 1MHz to 8MHz CMOS clock.
Blink Clock Output. Output is open drain.
Clock Output. OSC_OUT is a buffered clock output to allow easy blink synchronization of
multiple MAX6955s. Output is push-pull.
General-Purpose I/O Port. Also functions as IRQ output when key scanning is enabled.
Not Internally Connected
Exposed Paddle. Internally connected to GND. Connect to a large ground plane to improve
thermal performance.
Detailed Description
The MAX6955 is a serially interfaced display driver that
can drive up to 16 digits 7-segment, 8 digits 14-seg-
ment, 8 digits 16-segment, 128 discrete LEDs, or a
combination of these display types. Table 1 shows the
drive capability of the MAX6955 for monocolor and
bicolor displays.
The MAX6955 includes 104-character ASCII font maps
for 14-segment and 16-segment displays, as well as
the hexadecimal font map for 7-segment displays. The
characters follow the standard ASCII font, with the addi-
tion of the following common symbols: ￡, A , ￥, °, μ, ±, ↑ ,
and ↓ . Seven bits represent the 104-character font
map; an 8th bit is used to select whether the decimal
6
point (DP) is lit. Seven-segment LED digits can be con-
trolled directly or use the hexadecimal font. Direct seg-
ment control allows the MAX6955 to be used to drive
bar graphs and discrete LED indicators.
Tables 2, 3, and 4 list the connection schemes for 16-,
14-, and 7-segment digits, respectively. The letters in
Tables 2, 3, and 4 correspond to the segment labels
shown in Figure 1. (For applications that require mixed
display types, see Tables 38–41.)
Serial Interface
Serial Addressing
The MAX6955 operates as a slave that sends and
receives data through an I 2 C-compatible 2-wire inter-
face. The interface uses a serial data line (SDA) and a
Maxim Integrated
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX6955APL | 制造商:Maxim Integrated Products 功能描述:2-WIRE INTERFACED, 2.7V TO 5.5V LED DISPLAY D - Rail/Tube |
| MAX6955APL+ | 制造商:Maxim from Components Direct 功能描述:MAXIM MAX6955APL+ LED DRIVERS - Rail/Tube 制造商:Maxim Integrated Products 功能描述:LED DRVR 128SEGMENT 2.7V TO 5.5V - Rail/Tube 制造商:Maxim 功能描述:Maxim MAX6955APL+ LED Drivers |
| MAX6955ATL | 功能描述:LED显示驱动器 RoHS:否 制造商:Micrel 数位数量:5 片段数量: 安装风格:SMD/SMT 封装 / 箱体:PLCC-44 工作电源电压:4.75 V to 11 V 最大电源电流:10 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装:Tube |
| MAX6955ATL+ | 功能描述:LED显示驱动器 2.7-5.5V LED Display Driver RoHS:否 制造商:Micrel 数位数量:5 片段数量: 安装风格:SMD/SMT 封装 / 箱体:PLCC-44 工作电源电压:4.75 V to 11 V 最大电源电流:10 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装:Tube |
| MAX6955ATL+T | 功能描述:LED显示驱动器 2.7-5.5V LED Display Driver RoHS:否 制造商:Micrel 数位数量:5 片段数量: 安装风格:SMD/SMT 封装 / 箱体:PLCC-44 工作电源电压:4.75 V to 11 V 最大电源电流:10 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装:Tube |
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