参数资料
| 型号： | MAX6955ATL+T |
| 厂商： | Maxim Integrated |
| 文件页数： | 16/43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) |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页当前第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页
MAX6955
2-Wire Interfaced, 2.7V to 5.5V LED Display
Driver with I/O Expander and Key Scan
COMMAND BYTE IS STORED ON RECEIPT OF STOP CONDITION
D15
D14
D13
D12
D11
D10
D9
D8
ACKNOWLEDGE FROM MAX6955
S
SLAVE ADDRESS
0
A
COMMAND BYTE
A
P
Figure 7. Command Byte Received
R/W
ACKNOWLEDGE FROM MAX6955
ACKNOWLEDGE FROM MAX6955
ACKNOWLEDGE FROM MAX6955
HOW CONTROL BYTE AND DATA BYTE MAP INTO
MAX6955's REGISTERS
D15
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
ACKNOWLEDGE FROM MAX6955
S
SLAVE ADDRESS
0
A
COMMAND BYTE
A
DATA BYTE
A
P
R/W
1 BYTE
AUTOINCREMENT MEMORY WORD ADDRESS
Figure 8. Command and Single Data Byte Received
ACKNOWLEDGE FROM MAX6955
ACKNOWLEDGE FROM MAX6955
HOW CONTROL BYTE AND DATA BYTE MAP INTO
MAX6955's REGISTERS
D15
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
ACKNOWLEDGE FROM MAX6955
S
SLAVE ADDRESS
0
A
COMMAND BYTE
A
DATA BYTE
A
P
R/W
n BYTE
AUTOINCREMENT MEMORY WORD ADDRESS
Figure 9. n Data Bytes Received
Each key press is scanned twice in a 25.6ms time peri-
od with a nominal oscillator frequency of 4MHz, as
shown in Figure 12. In the first key test period of 1.6ms,
input level at ports P0–P3 (Key_A, Key_B, Key_C, and
Key_D) are examined in conjunction with the signal-low
period of ports O0–O7 to see if any key is pressed. If
pressed, the corresponding key pressed register bit is
set. In the second key test period of 1.6ms, input level
at ports P0–P3 are examined again (debounce) to see if
the key is still pressed. If still pressed, the correspond-
ing debounce register bit is set. The debounce time
between key tests is 12.8ms.
16
Port Configuration Register
The port configuration register selects how the five port
pins are used. The port configuration register format is
described in Table 33.
Key Mask Registers
The Key_A Mask, Key_B Mask, Key_C Mask, and
Key_D Mask write-only registers (Table 34) configure
the key-scanning circuit to cause an interrupt only when
selected (masked) keys have been debounced. Each
bit in the register corresponds to one key switch. The bit
is clear to disable interrupt for the switch, and set to
enable interrupt. Keys are always scanned (if enabled
through the port configuration register), regardless of
the setting of these interrupt bits, and the key status is
stored in the appropriate Key_x pressed register.
Maxim Integrated
相关PDF资料 |
PDF描述 |
|---|---|
| MAX6956ATL/V+ | IC DRIVER LED PORT 20/28 40WQFN |
| MAX6957ANI | IC DRIVER LED PORT 20/28 28-DIP |
| MAX6959AAPE+ | IC DRVR DSPL LED 16-DIP |
| MAX6963ATH+ | IC DRIVER LED MATRIX 44-TQFN |
| MAX696CWE | IC MPU SUPERVISRY CIRCUIT 16SOIC |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX6955EVKIT | 功能描述:LED 照明开发工具 Evaluation Kit for the MAX6955 RoHS:否 制造商:Fairchild Semiconductor 产品:Evaluation Kits 用于:FL7732 核心: 电源电压:120V 系列: 封装: |
| MAX6956AAI | 功能描述:LED显示驱动器 Integrated Circuits (ICs) 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 |
| MAX6956AAI+ | 功能描述:LED显示驱动器 2.5-5.5V 20/28Port 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 |
| MAX6956AAI+T | 功能描述:LED显示驱动器 2.5-5.5V 20/28Port 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 |
| MAX6956AAI-T | 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 |
发布紧急采购，3分钟左右您将得到回复。