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參數(shù)資料
| 型號(hào)： | C8051F023R |
| 廠商： | Silicon Laboratories Inc |
| 文件頁(yè)數(shù)： | 11/272頁(yè) |
| 文件大小： | 0K |
| 描述： | IC 8051 MCU 64K FLASH 64TQFP |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 系列： | C8051F02x |
| 核心處理器： | 8051 |
| 芯體尺寸： | 8-位 |
| 速度： | 25MHz |
| 連通性： | EBI/EMI，SMBus（2 線/I²C），SPI，UART/USART |
| 外圍設(shè)備： | 欠壓檢測(cè)/復(fù)位，POR，PWM，溫度傳感器，WDT |
| 輸入/輸出數(shù)： | 32 |
| 程序存儲(chǔ)器容量： | 64KB（64K x 8） |
| 程序存儲(chǔ)器類(lèi)型： | 閃存 |
| RAM 容量： | 4.25K x 8 |
| 電壓 - 電源 (Vcc/Vdd)： | 2.7 V ~ 3.6 V |
| 數(shù)據(jù)轉(zhuǎn)換器： | A/D 8x8b，8x10b; D/A 2x12b |
| 振蕩器型： | 內(nèi)部 |
| 工作溫度： | -40°C ~ 85°C |
| 封裝/外殼： | 64-TQFP |
| 包裝： | 剪切帶 (CT) |
| 其它名稱： | 336-1035-1 |
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C8051F020/1/2/3
108
Rev. 1.4
12.2.2. Data Memory
The CIP-51 implements 256 bytes of internal RAM mapped into the data memory space from 0x00 through 0xFF.
The lower 128 bytes of data memory are used for general purpose registers and scratch pad memory. Either direct or
indirect addressing may be used to access the lower 128 bytes of data memory. Locations 0x00 through 0x1F are
addressable as four banks of general purpose registers, each bank consisting of eight byte-wide registers. The next
16 bytes, locations 0x20 through 0x2F, may either be addressed as bytes or as 128 bit locations accessible with the
direct addressing mode.
The upper 128 bytes of data memory are accessible only by indirect addressing. This region occupies the same
address space as the Special Function Registers (SFR) but is physically separate from the SFR space. The addressing
mode used by an instruction when accessing locations above 0x7F determines whether the CPU accesses the upper
128 bytes of data memory space or the SFRs. Instructions that use direct addressing will access the SFR space.
Instructions using indirect addressing above 0x7F access the upper 128 bytes of data memory. Figure 12.2 illustrates
the data memory organization of the CIP-51.
12.2.3. General Purpose Registers
The lower 32 bytes of data memory, locations 0x00 through 0x1F, may be addressed as four banks of general-purpose
registers. Each bank consists of eight byte-wide registers designated R0 through R7. Only one of these banks may be
enabled at a time. Two bits in the program status word, RS0 (PSW.3) and RS1 (PSW.4), select the active register bank
(see description of the PSW in Figure 12.6). This allows fast context switching when entering subroutines and inter-
rupt service routines. Indirect addressing modes use registers R0 and R1 as index registers.
12.2.4. Bit Addressable Locations
In addition to direct access to data memory organized as bytes, the sixteen data memory locations at 0x20 through
0x2F are also accessible as 128 individually addressable bits. Each bit has a bit address from 0x00 to 0x7F. Bit 0 of
the byte at 0x20 has bit address 0x00 while bit 7 of the byte at 0x20 has bit address 0x07. Bit 7 of the byte at 0x2F has
bit address 0x7F. A bit access is distinguished from a full byte access by the type of instruction used (bit source or
destination operands as opposed to a byte source or destination).
The MCS-51 assembly language allows an alternate notation for bit addressing of the form XX.B where XX is the
byte address and B is the bit position within the byte. For example, the instruction:
MOV
C, 22.3h
moves the Boolean value at 0x13 (bit 3 of the byte at location 0x22) into the Carry flag.
12.2.5. Stack
A programmer's stack can be located anywhere in the 256 byte data memory. The stack area is designated using the
Stack Pointer (SP, address 0x81) SFR. The SP will point to the last location used. The next value pushed on the stack
is placed at SP+1 and then SP is incremented. A reset initializes the stack pointer to location 0x07; therefore, the first
value pushed on the stack is placed at location 0x08, which is also the first register (R0) of register bank 1. Thus, if
more than one register bank is to be used, the SP should be initialized to a location in the data memory not being used
for data storage. The stack depth can extend up to 256 bytes.
The MCUs also have built-in hardware for a stack record. The stack record is a 32-bit shift register, where each
PUSH or increment SP pushes one record bit onto the register, and each CALL pushes two record bits onto the regis-
ter. (A POP or decrement SP pops one record bit, and a RET pops two record bits, also.) The stack record circuitry
can also detect an overflow or underflow on the 32-bit shift register, and can notify the debug software even with the
MCU running at speed.
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| 533082-1 | CONN PIN GUIDE .375 UNPLATED |
| 2-592404-1 | CONN PIN SIZE 20 GOLD CRIMP |
| 533082-6 | HDI KEYING POWER PIN PLTD |
| C8051F022R | IC 8051 MCU 64K FLASH 100TQFP |
| 533082-3 | CONN PIN GUIDE FOR PLUG PLATED |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
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| C8051F02X | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8K ISP FLASH MCU Family |
| C8051F040 | 功能描述:8位微控制器 -MCU 64KB 12ADC 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(shí)鐘頻率:50 MHz 程序存儲(chǔ)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 |
| C8051F040DK | 功能描述:開(kāi)發(fā)板和工具包 - 8051 C8051F040DK W/ US POWER SUPPLY RoHS:否 制造商:Silicon Labs 產(chǎn)品:Development Kits 工具用于評(píng)估:C8051F960, Si7005 核心: 接口類(lèi)型:USB 工作電源電壓: |
| C8051F040DK-A | 功能描述:DEV KIT FOR F040/F041/F042/F043 RoHS:否 類(lèi)別:編程器，開(kāi)發(fā)系統(tǒng) >> 過(guò)時(shí)/停產(chǎn)零件編號(hào) 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 類(lèi)型:MCU 適用于相關(guān)產(chǎn)品:Freescale MC68HC908LJ/LK（80-QFP ZIF 插口） 所含物品:面板、纜線、軟件、數(shù)據(jù)表和用戶手冊(cè) 其它名稱:520-1035 |
| C8051F040DK-B | 功能描述:DEV KIT FOR F040/F041/F042/F043 RoHS:否 類(lèi)別:編程器，開(kāi)發(fā)系統(tǒng) >> 過(guò)時(shí)/停產(chǎn)零件編號(hào) 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 類(lèi)型:MCU 適用于相關(guān)產(chǎn)品:Freescale MC68HC908LJ/LK（80-QFP ZIF 插口） 所含物品:面板、纜線、軟件、數(shù)據(jù)表和用戶手冊(cè) 其它名稱:520-1035 |
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