- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄224792 > PPXY8300A6T1 (FREESCALE SEMICONDUCTOR INC) DIFFERENTIAL, PEIZORESISTIVE PRESSURE SENSOR, RECTANGULAR, SURFACE MOUNT PDF資料下載
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(yè)數(shù)： | 114/162頁(yè) |
| 文件大?。?/td> | 4316K |
| 代理商： | PPXY8300A6T1 |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)第19頁(yè)第20頁(yè)第21頁(yè)第22頁(yè)第23頁(yè)第24頁(yè)第25頁(yè)第26頁(yè)第27頁(yè)第28頁(yè)第29頁(yè)第30頁(yè)第31頁(yè)第32頁(yè)第33頁(yè)第34頁(yè)第35頁(yè)第36頁(yè)第37頁(yè)第38頁(yè)第39頁(yè)第40頁(yè)第41頁(yè)第42頁(yè)第43頁(yè)第44頁(yè)第45頁(yè)第46頁(yè)第47頁(yè)第48頁(yè)第49頁(yè)第50頁(yè)第51頁(yè)第52頁(yè)第53頁(yè)第54頁(yè)第55頁(yè)第56頁(yè)第57頁(yè)第58頁(yè)第59頁(yè)第60頁(yè)第61頁(yè)第62頁(yè)第63頁(yè)第64頁(yè)第65頁(yè)第66頁(yè)第67頁(yè)第68頁(yè)第69頁(yè)第70頁(yè)第71頁(yè)第72頁(yè)第73頁(yè)第74頁(yè)第75頁(yè)第76頁(yè)第77頁(yè)第78頁(yè)第79頁(yè)第80頁(yè)第81頁(yè)第82頁(yè)第83頁(yè)第84頁(yè)第85頁(yè)第86頁(yè)第87頁(yè)第88頁(yè)第89頁(yè)第90頁(yè)第91頁(yè)第92頁(yè)第93頁(yè)第94頁(yè)第95頁(yè)第96頁(yè)第97頁(yè)第98頁(yè)第99頁(yè)第100頁(yè)第101頁(yè)第102頁(yè)第103頁(yè)第104頁(yè)第105頁(yè)第106頁(yè)第107頁(yè)第108頁(yè)第109頁(yè)第110頁(yè)第111頁(yè)第112頁(yè)第113頁(yè)當(dāng)前第114頁(yè)第115頁(yè)第116頁(yè)第117頁(yè)第118頁(yè)第119頁(yè)第120頁(yè)第121頁(yè)第122頁(yè)第123頁(yè)第124頁(yè)第125頁(yè)第126頁(yè)第127頁(yè)第128頁(yè)第129頁(yè)第130頁(yè)第131頁(yè)第132頁(yè)第133頁(yè)第134頁(yè)第135頁(yè)第136頁(yè)第137頁(yè)第138頁(yè)第139頁(yè)第140頁(yè)第141頁(yè)第142頁(yè)第143頁(yè)第144頁(yè)第145頁(yè)第146頁(yè)第147頁(yè)第148頁(yè)第149頁(yè)第150頁(yè)第151頁(yè)第152頁(yè)第153頁(yè)第154頁(yè)第155頁(yè)第156頁(yè)第157頁(yè)第158頁(yè)第159頁(yè)第160頁(yè)第161頁(yè)第162頁(yè)
MPXY8300 Series
Sensors
Freescale Semiconductor
55
8.4
Special Operations
The CPU performs a few special operations that are similar to instructions but do not have opcodes like other CPU instructions.
In addition, a few instructions such as STOP and WAIT directly affect other MCU circuitry. This section provides additional
information about these operations.
8.4.1
Reset Sequence
Reset can be caused by a power-on-reset (POR) event, internal conditions such as the COP (computer operating properly)
watchdog, or by assertion of an external active-low reset pin. When a reset event occurs, the CPU immediately stops whatever
it is doing (the MCU does not wait for an instruction boundary before responding to a reset event). For a more detailed discussion
about how the MCU recognizes resets and determines the source, refer to the Section 5.
The reset event is considered concluded when the sequence to determine whether the reset came from an internal source is
done and when the reset pin is no longer asserted. At the conclusion of a reset event, the CPU performs a 6-cycle sequence to
fetch the reset vector from 0xFFFE and 0xFFFF and to fill the instruction queue in preparation for execution of the first program
instruction.
8.4.2
Interrupt Sequence
When an interrupt is requested, the CPU completes the current instruction before responding to the interrupt. At this point, the
program counter is pointing at the start of the next instruction, which is where the CPU should return after servicing the interrupt.
The CPU responds to an interrupt by performing the same sequence of operations as for a software interrupt (SWI) instruction,
except the address used for the vector fetch is determined by the highest priority interrupt that is pending when the interrupt
sequence started.
The CPU sequence for an interrupt is:
1.
Store the contents of PCL, PCH, X, A, and CCR on the stack, in that order.
2.
Set the I bit in the CCR.
3.
Fetch the high-order half of the interrupt vector.
4.
Fetch the low-order half of the interrupt vector.
5.
Delay for one free bus cycle.
6.
Fetch three bytes of program information starting at the address indicated by the interrupt vector to fill the instruction
queue in preparation for execution of the first instruction in the interrupt service routine.
After the CCR contents are pushed onto the stack, the I bit in the CCR is set to prevent other interrupts while in the interrupt
service routine. Although it is possible to clear the I bit with an instruction in the interrupt service routine, this would allow nesting
of interrupts (which is not recommended because it leads to programs that are difficult to debug and maintain).
For compatibility with the earlier M68HC05 MCUs, the high-order half of the H:X index register pair (H) is not saved on the stack
as part of the interrupt sequence. The user must use a PSHH instruction at the beginning of the service routine to save H and
then use a PULH instruction just before the RTI that ends the interrupt service routine. It is not necessary to save H if you are
certain that the interrupt service routine does not use any instructions or auto-increment addressing modes that might change
the value of H.
The software interrupt (SWI) instruction is like a hardware interrupt except that it is not masked by the global I bit in the CCR and
it is associated with an instruction opcode within the program so it is not asynchronous to program execution.
8.4.3
Wait Mode Operation
The WAIT instruction enables interrupts by clearing the I bit in the CCR. It then halts the clocks to the CPU to reduce overall
power consumption while the CPU is waiting for the interrupt or reset event that will wake the CPU from wait mode. When an
interrupt or reset event occurs, the CPU clocks will resume and the interrupt or reset event will be processed normally.
If a serial BACKGROUND command is issued to the MCU through the background debug interface while the CPU is in wait mode,
CPU clocks will resume and the CPU will enter active background mode where other serial background commands can be
processed. This ensures that a host development system can still gain access to a target MCU even if it is in wait mode.
8.4.4
Stop Mode Operation
Usually, all system clocks, including the crystal oscillator (when used), are halted during stop mode to minimize power
consumption. In such systems, external circuitry is needed to control the time spent in stop mode and to issue a signal to wake-
up the target MCU when it is time to resume processing. Unlike the earlier M68HC05 and M68HC08 MCUs, the HCS08 can be
configured to keep a minimum set of clocks running in stop mode. This optionally allows an internal periodic signal to wake the
target MCU from stop mode.
When a host debug system is connected to the background debug pin (BKGD) and the ENBDM control bit has been set by a
serial command through the background interface (or because the MCU was reset into active background mode), the oscillator
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PR35MT2 | RECTANGULAR ADAPTER |
| PR406-BCR5HD | T-1 3/4 SINGLE COLOR LED, RED, 4.6 mm |
| PR44-PCG28H-CG | SINGLE COLOR LED, GREEN, 6.35 mm |
| PRADA1-07F-BR000 | ROCKER SWITCH, DPST, LATCHED, 7A, PANEL MOUNT |
| PRADD1-07F-BB000 | ROCKER SWITCH, DPST, LATCHED, 7A, PANEL MOUNT |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PPYY12C0.75 | 制造商:Farnell / Pro-Power 功能描述:CABLE YY 12 CORE 0.75MM PER M 制造商:pro-power 功能描述:CABLE, YY, 12 CORE, 0.75MM, PER M 制造商:PRIVATE LABEL 功能描述:CABLE, YY, 12 CORE, 0.75MM, PER M, No. of Conductors:12, Voltage Rating:500V, No 制造商:pro-power 功能描述:CABLE, YY, 12 CORE, 0.75MM, PER M, No. of Conductors:12, Voltage Rating:500V, No. of Max Strands x Strand Size:-, Conductor Area CSA:0.75mm2, Jacket Colour:Grey, Jacket Material:PVC (Polyvinyl Chloride), External Diameter:9.9mm, |
| PPYY12C0.75 100M | 制造商:Farnell / Pro-Power 功能描述:CABLE YY 12 CORE 0.75MM 100M 制造商:PRIVATE LABEL 功能描述:CABLE, YY, 12 CORE, 0.75MM, 100M, Reel Length (Imperial):328ft, Reel Length (Met 制造商:pro-power 功能描述:CABLE, YY, 12 CORE, 0.75MM, 100M, Reel Length (Imperial):328ft, Reel Length (Metric):100m, No. of Conductors:12, Voltage Rating:500V, No. of Max Strands x Strand Size:-, Conductor Area CSA:0.75mm2, Jacket Colour:Grey, Jacket , RoHS Compliant: Yes |
| 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 |
| PPYY12C1.50 | 制造商:Farnell / Pro-Power 功能描述:CABLE YY 12 CORE 1.5MM PER M 制造商:pro-power 功能描述:CABLE, YY, 12 CORE, 1.5MM, PER M |
| PPYY12C1.50 50M | 制造商:Farnell / Pro-Power 功能描述:CABLE YY 12 CORE 1.5MM 50M 制造商:pro-power 功能描述:CABLE, YY, 12 CORE, 1.5MM, 50M |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。