参数资料
型号: MPR084EJR2
厂商: Freescale Semiconductor
文件页数: 6/40页
文件大小: 0K
描述: IC CTLR TOUCH SENSR PROX 16TSSOP
标准包装: 1
类型: 电容性
输入数/键: 8
评估套件: 可供
数据接口: I²C,串行
电源电压: 1.8 V ~ 3.6 V
电流 - 电源: 1.62mA
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 16-TSSOP(0.173",4.40mm 宽)
供应商设备封装: 16-TSSOP
包装: 剪切带 (CT)
配用: KITMPR084EVM-ND - KIT EVAL 8-PAD TOUCH MPR084
其它名称: MPR084EJR2CT
MPR084
Sensors
14
Freescale Semiconductor
4
Modes of Operation
4.1
Introduction
The operating modes of the MPR084 are described in this section. Implementation and functionality of each mode are described.
The Modes of Operation of the MPR084 combine to form a suite of quick response and low power consumption functionality. This
is achieved through 2 Run modes and 2 Stop Modes. The two modes are enabled by toggling the Configuration Register’s DCE
and RUNE bits as shown in Table 8. Note that while in a run mode, the only register that can be written to is the Configuration
Register. Thus, when changes to registers are needed, enter Stop1 mode, write to the registers and change the mode to “Run”.
4.2
Initial Power Up
On power-up, the interrupt output IRQ is reset, and IRQ will go high. The registers are reset to the values shown in Table 9.
Table 8. Mode Enable Register Bits
Mode
RUNE
DCE
Run1
1
Run2
1
0
Stop1
0
1
Stop2
0
Table 9. Power-Up Register Configurations
Register Function
Power-Up Condition
Register Address
HEX Value
FIFO is empty
0x00
0x40
No faults
0x01
0x00
Touch Pad is untouched
0x02
0x00
Touch Pad is enabled, without interrupts,
with sounder enabled and Auto-Cal Disabled
0x03
0x81
Maximum sensitivity
0x04
0x00
Maximum sensitivity
0x05
0x00
Maximum sensitivity
0x06
0x00
Maximum sensitivity
0x07
0x00
Maximum sensitivity
0x08
0x00
Maximum sensitivity
0x09
0x00
Maximum sensitivity
0x0A
0x00
Maximum sensitivity
0x0B
0x00
All channels enabled
0x0C
0xFF
4 maximum concurrent touched position
allowed
0x0D
0x04
Master tick period is 10ms
0x0E
0x05
TASP is 1 master tick period
0x0F
0x01
Sounder is globally enabled, 10ms of 1kHz
0x10
0x01
Low Power Mode is disabled
0x11
0x00
Stuck key detector disabled
0x12
0x00
Stop1 Mode. IRQ is disabled
0x13
0x14
Fixed SensorInfo based on revision
0x14
0xFF
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