- 您现在的位置：买卖IC网 > PDF目录11710 > MAX7347ATE+T (Maxim Integrated Products)IC CNTRL SW SOUND 16-TQFN PDF资料下载
参数资料
| 型号： | MAX7347ATE+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 6/29页 |
| 文件大小： | 0K |
| 描述： | IC CNTRL SW SOUND 16-TQFN |
| 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-WQFN 裸露焊盘 |
| 供应商设备封装： | 16-TQFN-EP（4x4） |
| 包装： | 带卷 (TR) |
| 安装类型： | 表面贴装 |
第1页第2页第3页第4页第5页当前第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
MAX7347/MAX7348/MAX7349
2-Wire Interfaced Low-EMI Key Switch
and Sounder Controllers
14
______________________________________________________________________________________
Key-Scan Registers
Eight key-scan registers are described in the following
sections.
Keys FIFO Register
The keys FIFO register contains the information pertain-
ing to the status of the keys FIFO, as well as the key-
press events that have been debounced (Table 8). Bits
D0 to D5 denote which of the 64 keys have been
debounced and the keys are numbered as in Table 2
and Figure 1. D6 indicates whether the present
debounced key is the last one in the FIFO, with 1
denoting that there are more keys after the present one,
and 0 denoting that the present debounced key is the
last one stored in the FIFO. D7 is the overflow flag,
which denotes whether the keys FIFO has overflowed.
Reading the key-scan FIFO clears the interrupt INT. INT
is only reasserted after the FIFO has been emptied by
performing enough read operations.
Debounce Register
The debounce register sets the time for each debounce
cycle, as well as setting whether the GPO ports are
enabled or disabled. Bits D0 through D4 set the
debounce time in increments of 1ms starting at 9ms
and ending at 40ms (Table 9). Bits D5 through D7 set
which one of the GPO ports is to be enabled. Note that
not any port can be enabled at a particular time. The
GPO ports can be enabled only in the combinations
shown in Table 9, from all disabled to all enabled.
Autorepeat Register
The autorepeat register sets the autorepeat frequency
(repeat rate) and its delay. The autorepeat function allows
a key to be consecutively asserted when the key itself is
pressed down without being released. The autorepeat
delay specifies the delay between the first press and the
beginning of the autorepeating, provided that the key has
not been released. The autorepeat frequency specifies
how fast the continuously pressed-down key to be assert-
ed once autorepeating has started is. Bits D0 through D3
specify the autorepeat delay in terms of debounce cycles
REGISTER
ADDRESS CODE
(hex)
REGISTER DATA
D7
D6
D5
D4
D3
D2
D1
D0
DEBOUNCE REGISTER
0x01
PORTS ENABLE
DEBOUNCE TIME
Debounce time is 9ms
0x01
X
0000
0
Debounce time is 10ms
0x01
X
0000
1
Debounce time is 11ms
0x01
X
0001
0
Debounce time is 12ms
0x01
X
0001
1
All the way through to
0x01
X
————
—
Debounce time is 37ms
0x01
X
1110
0
Debounce time is 38ms
0x01
X
1110
1
Debounce time is 39ms
0x01
X
1111
0
Debounce time is 40ms
0x01
X
1111
1
GPO ports disabled (full key-scan functionality)
0x01
0
XXXX
X
GPO port 7 enabled
0x01
0
1
XXXX
X
GPO ports 7 and 6 enabled
0x01
0
1
0
XXXX
X
GPO ports 7, 6, and 5 enabled
0x01
0
1
XXXX
X
GPO ports 7, 6, 5, and 4 enabled
0x01
1
0
XXXX
X
GPO ports 7, 6, 5, 4, and 3 enabled
0x01
1
0
1
XXXX
X
GPO ports 7, 6, 5, 4, 3, and 2 enabled
0x01
1
XXXXX
X
Power-up default setting
0x01
1
111111
1
Table 9. Debounce Register Format
相关PDF资料 |
PDF描述 |
|---|---|
| VE-B6X-IW-F1 | CONVERTER MOD DC/DC 5.2V 100W |
| MAX7349ATG+T | IC CNTRL SW SOUND 24-TQFN |
| VE-J54-IW-F2 | CONVERTER MOD DC/DC 48V 100W |
| VE-B6V-IW-F4 | CONVERTER MOD DC/DC 5.8V 100W |
| VE-B6V-IW-F3 | CONVERTER MOD DC/DC 5.8V 100W |
相关代理商/技术参数 |
参数描述 |
|---|---|
| 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 |
| MAX7348AEP+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 |
| MAX7348AEP-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 |
发布紧急采购，3分钟左右您将得到回复。