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參數(shù)資料
| 型號： | MAX7349AEG+ |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 5/29頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC CNTRL SW SOUND 24-QSOP |
| 產(chǎn)品培訓模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 50 |
| 應用： | 聲卡，播放器，記錄器 |
| 接口： | I²C |
| 電源電壓： | 2.4 V ~ 3.6 V |
| 封裝/外殼： | 24-SSOP（0.154"，3.90mm 寬） |
| 供應商設備封裝： | 24-QSOP |
| 包裝： | 管件 |
| 安裝類型： | 表面貼裝 |
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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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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MAX7349AEG+ | 功能描述:外圍驅(qū)動器與原件 - PCI Low-EMI Key Switch & Sounder Controller RoHS:否 制造商:PLX Technology 工作電源電壓: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:FCBGA-1156 封裝:Tray |
| MAX7349AEG+T | 功能描述:外圍驅(qū)動器與原件 - PCI Low-EMI Key Switch & Sounder Controller RoHS:否 制造商:PLX Technology 工作電源電壓: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:FCBGA-1156 封裝:Tray |
| MAX7349AEG-T | 功能描述:外圍驅(qū)動器與原件 - PCI Low-EMI Key Switch & Sounder Controller RoHS:否 制造商:PLX Technology 工作電源電壓: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:FCBGA-1156 封裝:Tray |
| MAX7349ANG | 制造商:Maxim Integrated Products 功能描述:2-WIRE INTERFACED LOW-EMI KEY SWITCHES AND SO - Rail/Tube |
| MAX7349ATG+ | 功能描述:外圍驅(qū)動器與原件 - PCI Low-EMI Key Switch & Sounder Controller RoHS:否 制造商:PLX Technology 工作電源電壓: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:FCBGA-1156 封裝:Tray |
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