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参数资料
| 型号： | MPR084EJR2 |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 12/40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 键 |
| 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 |
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MPR084
Sensors
2
Freescale Semiconductor
1
Device Overview
1.1
Introduction
Freescale Semiconductor’s MPR084 proximity capacitive touch sensor controller is one of a family of products designed to detect
the state of capacitive touch pads. The MPR084 offers designers a cost-efficient alternative to mechanical keys for control panel
applications.
The MPR084 uses an I2C interface to communicate with the host which configures the operation and an interrupt to advise the
host of status changes. The MPR084 includes a piezo sounder drive which provides audible feedback to simulate mechanical
key clicks. The MPR08X family has several implementations to use in your design including control panels and switch
replacements. The MPR084 controls individual touch pads. Other members of the MPR08X family are well suited for other
application interface situations such as individual touch pads or rotary/touch pad combinations.
Freescale offers a broad portfolio of proximity sensors for products ranging from appliance control panels to portable electronics.
Target markets include consumer, appliance, industrial, medical and computer peripherals.
1.1.1
Devices in the MPR08X series
The MPR08X series of Proximity Capacitive Touch Sensor Controllers allows for a wide range of applications and
implementations. Each of the products in Table 1 perform a different application specific task and are optimized for this specific
functionality.
1.1.2
Internal Block Diagram
The MPR084 consists of primary functional blocks; Interrupt Controller, I2C Serial Interface, Sounder Controller, Configuration
and Status registers, Touch Pad Decoder, Magnitude Comparator and Recalibrator, EMI Burst/Noise Rejection Filter,
Capacitance Measurement Analog Front End. Each of these blocks will be described in detail in their respective sections.
Figure 2. Functional Block Diagram
Table 1. MPR08X Family Overview
Product
Bus
Sounder
Rotary/Slider
Touch Pad Array
MPR083
I2C
Yes
8-pads
—
MPR084
I2C
Yes
—
8 keys
CONFIGURA
TION
AND
ST
ATUS
REGISTERS
MAGNITUDE
COMP
ARA
TOR
AND
RECALIBRA
TOR
EMI
BURST/NOISE
REJECT
FIL
TER
CAP
ACIT
ANCE
MEASUREMENT
A.F
.E.
8
PAD
ENABLED
IRQ
SDA
SCL
I2C
SERIAL
INTERFACE
INTERRUPT
CONTROLLER
MASKS
SET
RATE
ATTN
AD0
SOUNDER
DRIVER
CONTROLLER
CLEAR
TOUCHED
PAD
IDENTIFY
DECODER
PAD
CURRENT
8
8 TOUCH PADS
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