参数资料
型号: MAX7349AWG
厂商: MAXIM INTEGRATED PRODUCTS INC
元件分类: 微控制器/微处理器
英文描述: SPECIALTY MICROPROCESSOR CIRCUIT, PDSO24
封装: 0.300 INCH, MS-013AD, SOIC-24
文件页数: 11/28页
文件大小: 760K
代理商: MAX7349AWG
MAX7347/MAX7348/MAX7349
2-Wire Interfaced Low-EMI Key Switch and
Sounder Controllers
______________________________________________________________________________________
19
REGISTER DATA
REGISTER
ADDRESS
CODE (hex)
D7
D6
D5
D4
D3
D2
D1
D0
CONFIGURATION REGISTER
0x04
SHUTDOWN
KEY
SOUND
ENABLE
ALERT
SOUND
ENABLE
ALERT
INT
ENABLE
ALERT
INT
EVENT
SOUNDER
STATUS
TIMEOUT
ENABLE
Shutdown mode; key-scan and
sounder timing are disabled,
interrupts disabled, but alert input
can be read and port outputs (as
selected) can be changed
0x04
0
X
XX
X
Operating mode; key scan is started,
and commands in sounder queue
are actioned
0x04
1
X
XX
X
Power-up default setting
0x04
00
0
00
1
Table 12. Configuration Register Format (continued)
REGISTER DATA
REGISTER
ADDRESS
CODE (hex)
READ
WRITE
D7
D6
D5
D4
D3
D2
D1
D0
READ
PORT 7 PORT 6 PORT 5 PORT 4 PORT 3 PORT 2
INT
PORT
ALERT
INPUT
PORTS REGISTER
0x05
WRITE
PORT 7 PORT 6 PORT 5 PORT 4 PORT 3 PORT 2
INT
PORT
X
Clear port 2 low
0x05
Write
X
0
X
Set port 2 high (high
impedance)
0x05
Write
X
1
X
Clear port 3 low
0x05
Write
X
0
X
Set port 3 high (high
impedance)
0x05
Write
X
1
X
Clear port 4 low
0x05
Write
X
0
X
Set port 4 high (high
impedance)
0x05
Write
X
1
X
Clear port 5 low
0x05
Write
X
0
X
Set port 5 high (high
impedance)
0x05
Write
X
1
X
Clear port 6 low
0x05
Write
X
0
X
Set port 6 high (high
impedance)
0x05
Write
X
1
X
Table 13. Ports Register Format
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