參數(shù)資料
型號(hào)： PPXY8300A6T1
廠商： FREESCALE SEMICONDUCTOR INC
元件分類(lèi)： Pressure Sensor
英文描述： DIFFERENTIAL, PEIZORESISTIVE PRESSURE SENSOR, RECTANGULAR, SURFACE MOUNT
封裝： SOIC-20
文件頁(yè)數(shù)： 9/162頁(yè)
文件大?。?/td> 4316K
代理商： PPXY8300A6T1
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MPXY8300 Series
Sensors
106
Freescale Semiconductor
SECTION 13 RF OUTPUT
The RFX device consists of an RF output driver for an antenna and a hardware data buffer for automated output or direct control
from the MCU. It also has a charge pump to generate a higher supply voltage for the RF transmission, if desired, when the supply
battery voltage is too low.
13.1
RFX Registers
The RFX device has its own memory map containing 32 register locations as shown in Figure 13-1. These registers contain
control and status bits for the RFX modules, data locations for the RF data buffer, trim variables and test registers. Access to
these bits is through the internal SPI interface. The firmware subroutines control this interface so that the use only needs to call
the REIMS_RFRD or REIMS_RFWRT subroutines to pass the address and data that needs to be accessed or changed in the
RFX. The register and bit assignments for the RFX addresses are given in Table 13-1.
NOTE
It is recommended that the firmware subroutines be used instead of trying to directly access the SPI interface.
The serial data transfers between the MCU and the RFX can be done using subroutine calls to the FLASH firmware as described
in Section 14. Some subroutines will transfer information held in the CPU registers (accumulator and index register) and others
will transfer blocks of data stored to specified locations in RAM, stored in the parameter registers or contained in the FLASH
firmware (as calibration data).
Figure 13-1 RFX Memory Map
The register and bit assignments for the RFX addresses are given in Table 13-1.
$00
7 BYTES
TRIM REGISTERS
9 BYTES
RFX REGISTERS
$08
$09
16 BYTES
RF DATA BUFFER
$0F
$10
$1F
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PPYY12C0.75 50M 制造商:Farnell / Pro-Power 功能描述:CABLE YY 12 CORE 0.75MM 50M 制造商:pro-power 功能描述:CABLE, YY, 12 CORE, 0.75MM, 50M
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