參數(shù)資料
型號: MAX7349AEG+T
廠商: Maxim Integrated Products
文件頁數(shù): 4/29頁
文件大?。?/td> 0K
描述: IC CNTRL SW SOUND 24-QSOP
產(chǎn)品培訓(xùn)模塊: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標準包裝: 2,500
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: 帶卷 (TR)
安裝類型: 表面貼裝
MAX7347/MAX7348/MAX7349
2-Wire Interfaced Low-EMI Key Switch
and Sounder Controllers
12
______________________________________________________________________________________
REGISTER DATA
REGISTER
FUNCTION
POWER-UP CONDITION
ADDRESS
CODE (hex)
D7
D6
D5
D4
D3
D2
D1
D0
Keys FIFO
Empty
0x00
00000000
Debounce
Ports 2–7 are enabled; debounce time is 39ms
0x01
11111111
Autorepeat
Autorepeat is disabled
0x02
00000000
Interrupt
INT is a port, not an interrupt output
0x03
00000000
Configuration
Shutdown mode: key sound is disabled; alert sound is
disabled; alert
INT is disabled; timeout enabled; no
sound output
0x04
00000001
Ports
Ports 2–7 and
INT are logic-high (high impedance)
0x05
1111111
X
Key Sound
Key-sound default is 31.25ms of 987.77Hz
0x06
01010001
Alert Sound
Key-sound default is 250ms of 2093Hz
0x07
10111011
Table 5. Key-Scan Power-Up Configuration
REGISTER DATA
POWER-UP CONDITION
D7
D6
D5
D4
D3
D2
D1
D0
Sounder output is a general-purpose output, logic 0; queue is empty
0
Table 6. Sounder Power-Up Configuration
SA
AA
P
0
SLAVE ADDRESS
COMMAND BYTE
DATA BYTE
N BYTES
AUTOINCREMENT
COMMAND BYTE ADDRESS
D7
D6
D5
D4
D3
D2
D1
D0
D1
D0
D3
D2
D5
D4
D7
D6
ACKNOWLEDGE FROM MAX7347/MAX7348/MAX7349
R/W
Figure 9. N Data Bytes Received
X
= Don’t care.
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