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參數(shù)資料
| 型號： | C8051F989-GU |
| 廠商： | Silicon Laboratories Inc |
| 文件頁數(shù)： | 3/4頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC MCU 8BIT 4KB FLASH 24QSOP |
| 產(chǎn)品培訓模塊： | C8051F9xx Lower Power MCUs Serial Communication Overview |
| 視頻文件： | Designing for Low Power Operation |
| 特色產(chǎn)品： | C8051F91x/0x MCU Series Development Kit C8051F98x and C8051F99x Low-Power MCU’s |
| 標準包裝： | 56 |
| 系列： | C8051F9xx |
| 核心處理器： | 8051 |
| 芯體尺寸： | 8-位 |
| 速度： | 25MHz |
| 連通性： | SMBus（2 線/I²C），SPI，UART/USART |
| 外圍設(shè)備： | 欠壓檢測/復位，POR，PWM，WDT |
| 輸入/輸出數(shù)： | 17 |
| 程序存儲器容量： | 4KB（4K x 8） |
| 程序存儲器類型： | 閃存 |
| RAM 容量： | 512 x 8 |
| 電壓 - 電源 (Vcc/Vdd)： | 1.8 V ~ 3.6 V |
| 振蕩器型： | 內(nèi)部 |
| 工作溫度： | -40°C ~ 85°C |
| 封裝/外殼： | 24-SSOP（0.154"，3.90mm 寬） |
| 包裝： | 管件 |
| 其它名稱： | 336-1958-5 |
400 West Cesar Chavez, Austin, TX 78701 www.silabs.com
6.
Writes to CRC0CN that Initiate a CRC0 Operation
Description: The third op-code byte fetched from program memory following a write to CRC0CN that initiates
a CRC0 operation is indeterminate.
Impacts: If the indeterminate op-code byte is the first or second byte in an instruction, improper code
execution may result.
Workaround: Writes to CRC0CN that initiate a CRC0 operation must be immediately followed by a benign 3-
byte instruction whose third byte is a “don’t care.” An example of such an instruction is the write of a dummy
value to the CRC0FLIP register using a 3-byte MOV instruction. The value written to CRC0FLIP will be
indeterminate, but this should have no effect on the system. To ensure that both instructions are executed
without interruption, global interrupts should be disabled.
Note: When programming in C, the dummy value written to CRC0FLIP should be a non-zero value. This
prevents the compiler from generating the following instruction sequence:
CLR A
MOV CRC0FLIP, A
When programming in C, the disassembly should be checked to ensure the compiler generated the following
instruction sequence:
MOV CRC0FLIP, #AAh where #AAh is the non-zero dummy value.
Resolution: Fixed in Rev B and later.
7.
Address 0x0000 of XRAM
Description: On device reset, or upon waking up from Sleep mode, address 0x0000 of external memory
may be overwritten by an indeterminate value. The indeterminate value is 0x00 in most situations.
Impacts: Application data stored at 0x0000 in external memory may be overwritten upon reset or waking up
from sleep mode.
Workaround: A dummy variable should be placed at address 0x0000 in external memory to ensure that the
application software does not store any data that needs to be retained during sleep or reset at this memory
location. The compiler-independent example below shows how to locate a dummy variable at address
0x0000 in external memory.
LOCATED_VARIABLE_NO_INIT (reserved, U8, SEG_XDATA, 0x0000);
Compiler-independent code requires the use of the compiler_defs.h and c8051F990_defs.h header files
supplied in the C:\Silabs\MCU\INC folder after installation of the Silicon Laboratories IDE.
Resolution: This information will be added to the device data sheet.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| C8051F989-GUR | 功能描述:8位微控制器 -MCU 4kB 512B RAM 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 安裝風格:SMD/SMT |
| C8051F98X | 制造商:SILABS 制造商全稱:SILABS 功能描述:Ultra Low Power, High-Performance MCU |
| C8051F990 | 制造商:SILABS 制造商全稱:SILABS 功能描述:25 MIPS, 8 kB Flash, Ultra Low Power, Capacitive Sensing MCU |
| C8051F990-C-GM | 功能描述:CIP-51 8051 C8051F9xx Microcontroller IC 8-Bit 25MHz 8KB (8K x 8) FLASH 20-QFN (3x3) 制造商:silicon labs 系列:C8051F9xx 包裝:管件 零件狀態(tài):有效 核心處理器:CIP-51 8051 核心尺寸:8-位 速度:25MHz 連接性:SMBus（2 線/I2C），SPI，UART/USART 外設(shè):斷電檢測/復位，電容感應(yīng)，POR，PWM，溫度傳感器，WDT I/O 數(shù):16 程序存儲容量:8KB（8K x 8） 程序存儲器類型:閃存 EEPROM 容量:- RAM 容量:512 x 8 電壓 - 電源（Vcc/Vdd）:1.8 V ~ 3.6 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 9x12b 振蕩器類型:內(nèi)部 工作溫度:-40°C ~ 85°C（TA） 封裝/外殼:20-UFQFN 裸露焊盤 供應(yīng)商器件封裝:20-QFN（3x3） 標準包裝:100 |
| C8051F990-C-GMR | 功能描述:CIP-51 8051 C8051F9xx Microcontroller IC 8-Bit 25MHz 8KB (8K x 8) FLASH 20-QFN (3x3) 制造商:silicon labs 系列:C8051F9xx 包裝:帶卷（TR） 零件狀態(tài):有效 核心處理器:CIP-51 8051 核心尺寸:8-位 速度:25MHz 連接性:SMBus（2 線/I2C），SPI，UART/USART 外設(shè):斷電檢測/復位，電容感應(yīng)，POR，PWM，溫度傳感器，WDT I/O 數(shù):16 程序存儲容量:8KB（8K x 8） 程序存儲器類型:閃存 EEPROM 容量:- RAM 容量:512 x 8 電壓 - 電源（Vcc/Vdd）:1.8 V ~ 3.6 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 9x12b 振蕩器類型:內(nèi)部 工作溫度:-40°C ~ 85°C（TA） 封裝/外殼:20-UFQFN 裸露焊盤 供應(yīng)商器件封裝:20-QFN（3x3） 標準包裝:1,500 |
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