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參數(shù)資料
| 型號： | AT89C5131A-RDTIL |
| 廠商： | Atmel |
| 文件頁數(shù)： | 155/185頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC 8051 MCU FLASH 32K USB 64VQFP |
| 標(biāo)準(zhǔn)包裝： | 160 |
| 系列： | AT89C513x |
| 核心處理器： | C52X2 |
| 芯體尺寸： | 8-位 |
| 速度： | 48MHz |
| 連通性： | I²C，SPI，UART/USART，USB |
| 外圍設(shè)備： | LED，POR，PWM，WDT |
| 輸入/輸出數(shù)： | 34 |
| 程序存儲器容量： | 32KB（32K x 8） |
| 程序存儲器類型： | 閃存 |
| EEPROM 大小： | 4K x 8 |
| RAM 容量： | 1.25K x 8 |
| 電壓 - 電源 (Vcc/Vdd)： | 3 V ~ 3.6 V |
| 振蕩器型： | 內(nèi)部 |
| 工作溫度： | -40°C ~ 85°C |
| 封裝/外殼： | 64-LQFP |
| 包裝： | 托盤 |
| 配用： | AT89STK-10-ND - KIT EVAL APPL MASS STORAGE AT89STK-05-ND - KIT STARTER FOR AT89C5131 |
| 其它名稱： | AT89C5131-RDTIL-ND |
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2008-2012 Microchip Technology Inc.
DS70318F-page 71
dsPIC33FJ06GS101/X02 and dsPIC33FJ16GSX02/X04
4.2.6
SOFTWARE STACK
In addition to its use as a working register, the W15
register
in
the
dsPIC33FJ06GS101/X02
and
dsPIC33FJ16GSX02/X04 devices is also used as a
software Stack Pointer. The Stack Pointer always
points to the first available free word and grows from
lower to higher addresses. It predecrements for stack
pops and post-increments for stack pushes, as shown
in Figure 4-6. For a PC push during any CALL instruc-
tion, the MSb of the PC is zero-extended before the
push, ensuring that the MSb is always clear.
The Stack Pointer Limit register (SPLIM) associated
with the Stack Pointer sets an upper address boundary
for the stack. SPLIM is uninitialized at Reset. As is the
case for the Stack Pointer, SPLIM<0> is forced to ‘0’
because all stack operations must be word-aligned.
Whenever an EA is generated using W15 as a source
or destination
pointer,
the resulting
address
is
compared with the value in SPLIM. If the contents of
the Stack Pointer (W15) and the SPLIM register are
equal and a push operation is performed, a stack error
trap will not occur. The stack error trap will occur on a
subsequent push operation. For example, to cause a
stack error trap when the stack grows beyond address
0x1000 in RAM, initialize the SPLIM with the value
0x0FFE.
Similarly, a Stack Pointer underflow (stack error) trap is
generated when the Stack Pointer address is found to
be less than 0x0800. This prevents the stack from
interfering with the Special Function Register (SFR)
space.
A write to the SPLIM register should not be immediately
followed by an indirect read operation using W15.
FIGURE 4-6:
CALL
STACK FRAME
4.3
Instruction Addressing Modes
The addressing modes shown in Table 4-48 form the
basis of the addressing modes optimized to support the
specific
features
of
individual
instructions.
The
addressing modes provided in the MAC class of
instructions differ from those in the other instruction
types.
4.3.1
FILE REGISTER INSTRUCTIONS
Most file register instructions use a 13-bit address field
(f) to directly address data present in the first 8192
bytes of data memory (near data space). Most file
register instructions employ a working register, W0,
which is denoted as WREG in these instructions. The
destination is typically either the same file register or
WREG (with the exception of the MUL instruction),
which writes the result to a register or register pair. The
MOV
instruction allows additional flexibility and can
access the entire data space.
4.3.2
MCU INSTRUCTIONS
The three-operand MCU instructions are of the form:
Operand 3 = Operand 1 <function> Operand 2
where, Operand 1 is always a working register (that is,
the addressing mode can only be register direct), which
is referred to as Wb. Operand 2 can be a W register,
fetched from data memory, or a 5-bit literal. The result
location can be either a W register or a data memory
location.
The
following
addressing
modes
are
supported by MCU instructions:
Register Direct
Register Indirect
Register Indirect Post-Modified
Register Indirect Pre-Modified
5-bit or 10-bit Literal
Note:
A PC push during exception processing
concatenates the SRL register to the MSb
of the PC prior to the push.
<Free Word>
PC<15:0>
000000000
0
15
W15 (before CALL)
W15 (after CALL)
St
a
c
k
G
ro
w
s
T
o
w
a
rd
H
igh
er
A
d
re
s
0x0000
PC<22:16>
POP
: [--W15]
PUSH : [W15++]
Note:
Not
all
instructions
support
all
the
addressing modes given above. Individ-
ual instructions can support different sub-
sets of these addressing modes.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AT89C5131A-RDTIM | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:8-bit Flash Microcontroller with Full Speed USB Device |
| AT89C5131A-RDTUL | 功能描述:8位微控制器 -MCU 32K Flash 3V USB RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 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 + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT |
| AT89C5131A-RDTUM | 功能描述:8位微控制器 -MCU C5130A 32K Flash RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 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 + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT |
| AT89C5131A-RDTUM | 制造商:Atmel Corporation 功能描述:IC 8BIT MCU C51/C251 48MHZ 64-VQFP |
| AT89C5131A-S3SIL | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:8-bit Flash Microcontroller with Full Speed USB Device |
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