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参数资料
| 型号： | MAX7347AEE+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 5/29页 |
| 文件大小： | 0K |
| 描述： | IC CNTRL SW SOUND 16-QSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 应用： | 声卡，播放器，记录器 |
| 接口： | I²C |
| 电源电压： | 2.4 V ~ 3.6 V |
| 封装/外壳： | 16-SSOP（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-QSOP |
| 包装： | 带卷 (TR) |
| 安装类型： | 表面贴装 |
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MAX7347/MAX7348/MAX7349
2-Wire Interfaced Low-EMI Key Switch
and Sounder Controllers
______________________________________________________________________________________
13
Command Address Autoincrementing
Address autoincrementing allows the MAX7347/
MAX7348/MAX7349 to be configured with fewer trans-
missions by minimizing the number of times the com-
mand address needs to be sent. The command
address stored in the MAX7347/MAX7348/MAX7349
generally increments after each data byte is written or
read (Table 4). Autoincrementing applies only to the
key-scan command addresses and not to the sounder
command addresses.
Registers Description
Initial Power-Up
On power-up, all control registers are reset and the
MAX7347/MAX7348/MAX7349 enter shutdown mode
(Tables 5, 6). Table 7 shows the register address map
for the key-scan section.
COMMAND ADDRESS
REGISTER
FUNCTION
D15
D14
D13
D12
D11
D10
D9
D8
ADDRESS
CODE
(hex)
Keys FIFO
0000
00
0x00
Debounce
0000
00
01
0x01
Autorepeat
0000
00
10
0x02
Interrupt
0000
00
11
0x03
Configuration
0000
01
00
0x04
Ports
0000
01
0x05
Key Sound
0000
01
10
0x06
Alert Sound
0000
01
11
0x07
Table 7. Key-Scan Register Address Map
REGISTER DATA
REGISTER
ADDRESS
CODE
(hex)
D7
D6
D5
D4
D3
D2
D1
D0
KEYS FIFO REGISTER*
0X00
OVERFLOW
FLAG
MORE
FLAG
KEY SWITCH THAT HAS BEEN
DEBOUNCED
FIFO has not overflowed
0x00
0
X
FIFO overflowed; FIFO contains the first eight
key events
0x00
1
X
This key is the last FIFO item (key-switch data
not zero)
0x00
X
0
X
Key 0 was EITHER the last FIFO item OR the
FIFO is empty and no key has been pressed
0x00
0
This key is not the last FIFO item
0x00
X
1
X
Power-up default setting
0x00
0
00
Table 8. Keys FIFO Register Format
*
Reading the key-scan FIFO clears the INT. INT is only reasserted by a key event after the FIFO has been emptied by read(s).
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相关代理商/技术参数 |
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|---|---|
| MAX7347ATE+ | 功能描述:外围驱动器与原件 - PCI Low-EMI Key Switch & Sounder Controller RoHS:否 制造商:PLX Technology 工作电源电压: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:FCBGA-1156 封装:Tray |
| MAX7347ATE+T | 功能描述:外围驱动器与原件 - PCI Low-EMI Key Switch & Sounder Controller RoHS:否 制造商:PLX Technology 工作电源电压: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:FCBGA-1156 封装:Tray |
| MAX7348 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:2-Wire Interfaced Low-EMI Key Switch and Sounder Controllers |
| MAX7348AEP | 功能描述:外围驱动器与原件 - PCI Low-EMI Key Switch & Sounder Controller RoHS:否 制造商:PLX Technology 工作电源电压: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:FCBGA-1156 封装:Tray |
| MAX7348AEP+ | 功能描述:外围驱动器与原件 - PCI Low-EMI Key Switch & Sounder Controller RoHS:否 制造商:PLX Technology 工作电源电压: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:FCBGA-1156 封装:Tray |
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