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參數(shù)資料
| 型號： | ATA6285N-PNPW |
| 廠商： | ATMEL CORP |
| 元件分類： | 通信及網(wǎng)絡(luò) |
| 英文描述： | SPECIALTY TELECOM CIRCUIT, QCC32 |
| 封裝： | 5 X 5MM, QFN-32 |
| 文件頁數(shù)： | 29/121頁 |
| 文件大?。?/td> | 9917K |
| 代理商： | ATA6285N-PNPW |
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15
4958B–AUTO–11/10
Atmel ATA6285/ATA6286 [Preliminary]
3.5.4.1
The X-register, Y-register, and Z-register
The registers R26..R31 have some added functions to their general purpose usage. These reg-
isters are 16-bit address pointers for indirect addressing of the data space. The three indirect
address registers X, Y, and Z are defined as described in Figure 3-4.
Figure 3-4.
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).
3.5.5
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 must be defined by the program before
any subroutine calls are executed or interrupts are enabled. The Stack Pointer must be set to
point above 0x100, preferably RAMEND. 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 incre-
mented by one when data is popped from the Stack with the POP instruction, and it is
incremented by two when return address is popped from the Stack with return from subroutine
RET or return from interrupt RETI.
The Atmel 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
implementations of the Atmel AVR architecture is so small that only SPL is needed. In this case,
the SPH Register will not be present.
In ATA6289 only SP9 and SP8 of High Byte (SPH) are in use.
15
XH
XL
0
X-register
7
0
7
0
R27(0x1B)
R26 (0x1A)
15
YH
YL
0
Y-register
7
0
7
0
R29 (0x1D)
R28 (0x1C)
15
ZH
ZL
0
Z-register
7
0
7
0
R31 (0x1F)
R30 (0x1E)
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| ATA6285N-PNQW | SPECIALTY TELECOM CIRCUIT, QCC32 |
| ATCB-B01-RM50 | INTERCONNECTION DEVICE |
| ATEP-161100-SMA-P-01 | INTERCONNECTION DEVICE |
| ATH15T05-9S | 1-OUTPUT 66 W DC-DC REG PWR SUPPLY MODULE |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ATA6285N-PNQW | 功能描述:射頻微控制器 - MCU IC LF, Cap. Sens. Interface RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:Si100x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:24 MHz 程序存儲器大小:64 KB 數(shù)據(jù) RAM 大小:4 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:LGA-42 安裝風(fēng)格:SMD/SMT 封裝:Tube |
| ATA6285-PNPW | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:TPMS Control and Transmitter IC |
| ATA6285-PNQW | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:TPMS Control and Transmitter IC |
| ATA6286 | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:TPMS Control and Transmitter IC |
| ATA6286C-PNPW | 制造商:Atmel Corporation 功能描述:IC CTLR/XMITTER 433MHZ 32QFN 制造商:Atmel Corporation 功能描述:Active RFID AVR-uC, 125kHz + 433MHz |
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