參數(shù)資料
型號： MAX7349AEG+
廠商： Maxim Integrated Products
文件頁數(shù)： 29/29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(yīng)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(yīng)商設(shè)備封裝： 24-QSOP
包裝： 管件
安裝類型： 表面貼裝
MAX7347/MAX7348/MAX7349
2-Wire Interfaced Low-EMI Key Switch
and Sounder Controllers
_______________________________________________________________________________________
9
Slave Addresses
The MAX7347/MAX7348/MAX7349 have two 7-bit long
slave addresses (Figure 6). The bit following a 7-bit
slave address is the R/W bit, which is low for a write
command and high for a read command.
The first 4 bits (MSBs) of the MAX7347/MAX7348/
MAX7349 slave addresses are always 0111. Slave
address bits A3, A2, and A1 correspond, by the matrix
in Table 3, to the states of the device address input
AD0, and A0 corresponds to the R/W bit. MAX7347/
MAX7348/MAX7349 use two slave addresses, one for
the main key-scan controller, and one for the sounder
controller. The AD0 input can be connected to any of
four signals: GND, V+, SDA, or SCL, giving four possible
slave address pairs, allowing up to four MAX7348/
MAX7349 devices to share the bus. Only one MAX7347
can share the bus. The MAX7347 AD0 input is internally
connected to GND.
The MAX7347/MAX7348/MAX7349 monitor the bus
continuously, waiting for a START condition followed by
its slave address. When MAX7347/MAX7348/MAX7349
recognize their slave address, they acknowledge and
are then ready for continued communication.
PIN
COL0
COL1
COL2/PORT2 COL3/PORT3 COL4/PORT4 COL5/PORT5 COL6/PORT6 COL7/PORT7
ROW0
KEY 0
KEY 8
KEY 16
KEY 24
KEY 32
KEY 40
KEY 48
KEY 56
ROW1
KEY 1
KEY 9
KEY 17
KEY 25
KEY 33
KEY 41
KEY 49
KEY 57
ROW2
KEY 2
KEY 10
KEY 18
KEY 26
KEY 34
KEY 42
KEY 50
KEY 58
ROW3
KEY 3
KEY 11
KEY 19
KEY 27
KEY 35
KEY 43
KEY 51
KEY 59
ROW4
KEY 4
KEY 12
KEY 20
KEY 28
KEY 36
KEY 44
KEY 52
KEY 60
ROW5
KEY 5
KEY 13
KEY 21
KEY 29
KEY 37
KEY 45
KEY 53
KEY 61
ROW6
KEY 6
KEY 14
KEY 22
KEY 30
KEY 38
KEY 46
KEY 54
KEY 62
ROW7
KEY 7
KEY 15
KEY 23
KEY 31
KEY 39
KEY 47
KEY 55
KEY 63
Table 2. Key-Switch Mapping
DEVICE ADDRESS
PIN AD0
A7
A6
A5
A4
A3
A2
A1
A0 R/
W
FUNCTION
0
Key-scan controller write
0
1
Key-scan controller read
0
Sounder controller write
GND
01
11
00
1
Sounder controller read
0
Key-scan controller write
0
1
Key-scan controller read
0
Sounder controller write
V+
01
11
01
1
Sounder controller read
0
Key-scan controller write
0
1
Key-scan controller read
0
Sounder controller write
SDA
01
11
10
1
Sounder controller read
0
Key-scan controller write
0
1
Key-scan controller read
0
Sounder controller write
SCL
01
11
1
Sounder controller read
Table 3. 2-Wire Interface Address Map
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相關(guān)代理商/技術(shù)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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