參數(shù)資料
型號(hào)： PPXY8300A6T1
廠商： FREESCALE SEMICONDUCTOR INC
元件分類： Pressure Sensor
英文描述： DIFFERENTIAL, PEIZORESISTIVE PRESSURE SENSOR, RECTANGULAR, SURFACE MOUNT
封裝： SOIC-20
文件頁數(shù)： 57/162頁
文件大?。?/td> 4316K
代理商： PPXY8300A6T1
MPXY8300 Series
Sensors
Freescale Semiconductor
15
SECTION 4 MEMORY
The overall memory map of the MPXY8300 Series resides mainly in the MCU. There are additional memory elements in the P-
Chip which are accessed by the PCI as described in Section 10.3. There are also additional memory elements in the RFX which
are accessed by the internal SPI as described in Figure 13.These accesses to the P-Chip and RFX are performed using the
firmware routines provided by Freescale in the FLASH firmware area as described in Section 14 and are not normally accessed
by the user.
4.1
MCU Memory Map
As shown in Figure 4-1, MCU on-chip memory in the MPXY8300 Series consists of parameter registers, RAM, FLASH program
memory for nonvolatile data storage, and I/O and control/status registers.
Figure 4-1 MPXY8300 Series MCU Memory Map
The total memory map is 16K, but the upper 8K is used for firmware and test software. Upon power up the firmware will initialize
the device and redirect all vectors to the user area from $DFC0 through $DFFF. Any calls to the firmware subroutines are
accessed through the jump table located at $E000 through $E03F.
$0000
$003F
$0040
$005F
$1800
$17FF
$182B
$182C
$FFFF
$0060
$C000
$BFFF
DIRECT PAGE REGISTERS
RAM 512 BYTES
UNIMPLEMENTED
HIGH PAGE REGISTERS
5536 BYTES
UNIMPLEMENTED
42964 BYTES
$025F
$0260
PARAMETER REGISTERS
$DFE0
$DFDF
USER FLASH
8160 BYTES
USER VECTORS
FIRMWARE FLASH
8128 BYTES
$E000
$DFFF
$E040
$E03F
FIRMWARE JUMP TABLE
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