參數(shù)資料
型號： ATTINY13
廠商： Atmel Corp.
元件分類： 8位微控制器
英文描述： -bit AVR Microcontroller with 8K Bytes In- System Programmable Flash
中文描述： 位AVR微控制器具有8K字節(jié)的系統(tǒng)內可編程閃存
文件頁數(shù)： 13/176頁
文件大?。?/td> 2962K
代理商： ATTINY13
11
2535J–AVR–08/10
ATtiny13
Figure 4-3.
The X-, Y-, and Z-registers
In the different addressing modes these address registers have functions as fixed displacement,
automatic increment, and automatic decrement (see the instruction set reference for details).
4.5
Stack Pointer
The Stack is mainly used for storing temporary data, for storing local variables and for storing
return addresses after interrupts and subroutine calls. The Stack Pointer Register always points
to the top of the Stack. Note that the Stack is implemented as growing from higher memory loca-
tions to lower memory locations. This implies that a Stack PUSH command decreases the Stack
Pointer.
The Stack Pointer points to the data SRAM Stack area where the Subroutine and Interrupt
Stacks are located. This Stack space in the data SRAM is automaticall defined to the last
address in SRAM during power on reset. The Stack Pointer must be set to point above 0x60.
The Stack Pointer is decremented by one when data is pushed onto the Stack with the PUSH
instruction, and it is decremented by two when the return address is pushed onto the Stack with
subroutine call or interrupt. The Stack Pointer is incremented by one when data is popped from
the Stack with the POP instruction, and it is incremented by two when data is popped from the
Stack with return from subroutine RET or return from interrupt RETI.
The AVR Stack Pointer is implemented as two 8-bit registers in the I/O space. The number of
bits actually used is implementation dependent. Note that the data space in some implementa-
tions of the AVR architecture is so small that only SPL is needed. In this case, the SPH Register
will not be present.
4.5.1
SPL - Stack Pointer Low.
15
XH
XL
0
X-register
70
7
0
R27 (0x1B)
R26 (0x1A)
15
YH
YL
0
Y-register
70
7
0
R29 (0x1D)
R28 (0x1C)
15
ZH
ZL
0
Z-register
7
070
R31 (0x1F)
R30 (0x1E)
Bit
151413121110
9
8
SP7
SP6
SP5
SP4
SP3
SP2
SP1
SP0
SPL
76543210
Read/Write
R/W
Initial Value
10011111
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相關代理商/技術參數(shù)
參數(shù)描述
ATTINY13_08 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:8-bit Microcontroller with 1K Bytes In-System Programmable Flash
ATTINY13_10 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:8-bit Microcontroller with 1K Bytes In-System Programmable Flash
ATTINY13-10SU 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:8-bit Microcontroller with 1K Bytes In-System Programmable Flash
ATTINY13-12PI 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:8-bit AVR Microcontroller with 1K Bytes In-System Programmable Flash
ATTINY13-12PJ 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:8-bit AVR Microcontroller with 1K Bytes In-System Programmable Flash
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