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參數(shù)資料
| 型號(hào)： | C8051F350-GQ |
| 廠商： | Silicon Laboratories Inc |
| 文件頁(yè)數(shù)： | 3/234頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC 8051 MCU 8K FLASH 32LQFP |
| 產(chǎn)品培訓(xùn)模塊： | Serial Communication Overview |
| 標(biāo)準(zhǔn)包裝： | 250 |
| 系列： | C8051F35x |
| 核心處理器： | 8051 |
| 芯體尺寸： | 8-位 |
| 速度： | 50MHz |
| 連通性： | SMBus（2 線/I²C），SPI，UART/USART |
| 外圍設(shè)備： | POR，PWM，溫度傳感器，WDT |
| 輸入/輸出數(shù)： | 17 |
| 程序存儲(chǔ)器容量： | 8KB（8K x 8） |
| 程序存儲(chǔ)器類型： | 閃存 |
| RAM 容量： | 768 x 8 |
| 電壓 - 電源 (Vcc/Vdd)： | 2.7 V ~ 3.6 V |
| 數(shù)據(jù)轉(zhuǎn)換器： | A/D 8x24b; D/A 2x8b |
| 振蕩器型： | 內(nèi)部 |
| 工作溫度： | -40°C ~ 85°C |
| 封裝/外殼： | 32-LQFP |
| 包裝： | 托盤 |
| 配用： | 336-1165-ND - KIT REFERENCE DESIGN DGTL COMPSS 336-1083-ND - DEV KIT FOR F350/351/352/353 |
| 其它名稱： | 336-1270 |
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C8051F350/1/2/3
100
Rev. 1.1
11.2. Data Memory
The C8051F350/1/2/3 includes 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 con-
sisting 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 (SFRs) 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 address-
ing will access the SFR space. Instructions using indirect addressing above 0x7F access the upper 128 bytes
of data memory. Figure 11.1 illustrates the data memory organization of the C8051F350/1/2/3.
The C8051F35x family also includes 512 bytes of on-chip RAM mapped into the external memory (XDATA)
space. This RAM can be accessed using the CIP-51 core’s MOVX instruction. More information on the
XRAM memory can be found in Section “16. External RAM’ on page 127.
11.3. 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 SFR Definition 10.4). This
allows fast context switching when entering subroutines and interrupt service routines. Indirect addressing
modes use registers R0 and R1 as index registers.
11.4. 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 destina-
tion).
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.
11.5. Stack
A programmer's stack can be located anywhere in the 256-byte data memory. The stack area is desig-
nated using the Stack Pointer (SP, 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.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
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| C8051F350-GQR | 功能描述:8位微控制器 -MCU 8KB 24ADC 32Pin MCU Tape and Reel 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 |
| C8051F350R | 功能描述:8位微控制器 -MCU 24-bit ADC 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 |
| C8051F350-TB | 功能描述:插座和適配器 TARGET BOARD for C8051F350 RoHS:否 制造商:Silicon Labs 產(chǎn)品:Adapter 用于:EM35x |
| C8051F350-TB-K | 功能描述:PROTOTYPINGBOARDWITH C8051F350 制造商:silicon labs 系列:- 零件狀態(tài):在售 板類型:評(píng)估平臺(tái) 類型:MCU 8-位 核心處理器:8051 操作系統(tǒng):- 平臺(tái):- 配套使用產(chǎn)品/相關(guān)產(chǎn)品:C8051F35x 安裝類型:固定 內(nèi)容:板 標(biāo)準(zhǔn)包裝:1 |
| C8051F351 | 功能描述:8位微控制器 -MCU 24-bit ADC 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 |
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