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| 型號(hào)： | ST7LITE09Y0M6 |
| 英文描述： | FUSE, FORK LIFT TRUCK, 250A; Current, fuse rating:250A; Voltage rating, DC:80V; Approval category:DIN 43560/1; Depth, external:20mm; Height:1mm; Length / Height, external:0.5mm; Width, external:82mm RoHS Compliant: Yes |
| 中文描述： | ST7LITE0。 ST7SUPERLITE - 8位微控制器單電壓閃存。數(shù)據(jù)EEPROM。 ADC的。定時(shí)器。的SPI |
| 文件頁(yè)數(shù)： | 22/122頁(yè) |
| 文件大?。?/td> | 1716K |
| 代理商： | ST7LITE09Y0M6 |
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ST7LITE0, ST7SUPERLITE
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1
CPU REGISTERS
(Cont’d)
Stack Pointer (SP)
Read/Write
Reset Value: 00 FFh
The Stack Pointer is a 16-bit register which is al-
ways pointing to the next free location in the stack.
It is then decremented after data has been pushed
onto the stack and incremented before data is
popped from the stack (see
Figure 11
).
Since the stack is 64 bytes deep, the 10 most sig-
nificant bits are forced by hardware. Following an
MCU Reset, or after a Reset Stack Pointer instruc-
tion (RSP), the Stack Pointer contains its reset val-
ue (the SP5 to SP0 bits are set) which is the stack
higher address.
The least significant byte of the Stack Pointer
(called S) can be directly accessed by a LD in-
struction.
Note:
When the lower limit is exceeded, the Stack
Pointer wraps around to the stack upper limit, with-
out indicating the stack overflow. The previously
stored information is then overwritten and there-
fore lost. The stack also wraps in case of an under-
flow.
The stack is used to save the return address dur-
ing a subroutine call and the CPU context during
an interrupt. The user may also directly manipulate
the stack by means of the PUSH and POP instruc-
tions. In the case of an interrupt, the PCL is stored
at the first location pointed to by the SP. Then the
other registers are stored in the next locations as
shown in
Figure 11
.
– When an interrupt is received, the SP is decre-
mented and the context is pushed on the stack.
– On return from interrupt, the SP is incremented
and the context is popped from the stack.
A subroutine call occupies two locations and an in-
terrupt five locations in the stack area.
Figure 11. Stack Manipulation Example
15
8
0
0
0
0
0
0
0
0
7
0
1
1
SP5
SP4
SP3
SP2
SP1
SP0
PCH
PCL
SP
PCH
PCL
SP
PCL
PCH
X
A
CC
PCH
PCL
SP
PCL
PCH
X
A
CC
PCH
PCL
SP
PCL
PCH
X
A
CC
PCH
PCL
SP
SP
Y
CALL
Subroutine
Interrupt
event
PUSH Y
POP Y
IRET
RET
or RSP
@ 00FFh
@ 00C0h
Stack Higher Address = 00FFh
Stack Lower Address = 00C0h
相關(guān)PDF資料 |
PDF描述 |
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| ST7LITE10F1B6 | ST7LITE1 - 8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY.DATA EEPROM. ADC. 4 TIMERS. SPI |
| ST7LITE10F1M6 | FUSE PULLER/TESTERFUSE PULLER/TESTER; Depth, external:15mm; Length:60mm; Voltage rating, AC:24V; Voltage rating, DC:24V; Width, external:20mm |
| ST7LITE15F1B6 | CLIP FUSE 10A 5X20MM PC MOUNT |
| ST7LITE15F1M6 | CLIP FUSE 15A VERT ATO PC MOUNT |
| ST7LITE19F1B6 | FUSE CLIP 3AG SLDR LUG TIN BRASS |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ST7LITE0X | 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:8-BIT MICROCONTROLLER WITH SINGLE VOLTAGE FLASH MEMORY, DATA EEPROM, ADC, TIMERS, SPI |
| ST7LITE0XY0 | 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:8-bit microcontroller with single voltage Flash memory, data EEPROM, ADC, timers, SPI |
| ST7LITE1 | 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, DATA EEPROM, ADC, 4 TIMERS, SPI |
| ST7LITE10F1B6 | 制造商:未知廠(chǎng)家 制造商全稱(chēng):未知廠(chǎng)家 功能描述:ST7LITE1 - 8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY.DATA EEPROM. ADC. 4 TIMERS. SPI |
| ST7LITE10F1M6 | 制造商:未知廠(chǎng)家 制造商全稱(chēng):未知廠(chǎng)家 功能描述:ST7LITE1 - 8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY.DATA EEPROM. ADC. 4 TIMERS. SPI |
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