參數(shù)資料
型號: AT89C51ID2-RLTIM
廠商: Atmel
文件頁數(shù): 142/157頁
文件大小: 0K
描述: IC 8051 MCU FLASH 64K 44VQFP
標(biāo)準(zhǔn)包裝: 160
系列: 89C
核心處理器: 8051
芯體尺寸: 8-位
速度: 60MHz
連通性: I²C,SPI,UART/USART
外圍設(shè)備: POR,PWM,WDT
輸入/輸出數(shù): 34
程序存儲器容量: 64KB(64K x 8)
程序存儲器類型: 閃存
EEPROM 大?。?/td> 2K x 8
RAM 容量: 2K x 8
電壓 - 電源 (Vcc/Vdd): 2.7 V ~ 5.5 V
振蕩器型: 外部
工作溫度: -40°C ~ 85°C
封裝/外殼: 44-LQFP
包裝: 托盤
85
AT89C51ID2
4289C–8051–11/05
its own slave address followed by the data direction bit which must be at logic 1 (R) for
TWI to operate in the slave transmitter mode. After its own slave address and the R bit
have been received, the serial interrupt flag is set and a valid status code can be read
from SSCS. This status code is used to vector to an interrupt service routine. The appro-
priate action to be taken for each of these status code is detailed in Table . The slave
transmitter mode may also be entered if arbitration is lost while the TWI module is in the
master mode.
If the AA bit is reset during a transfer, the TWI module will transmit the last byte of the
transfer and enter state C0h or C8h. the TWI module is switched to the not addressed
slave mode and will ignore the master receiver if it continues the transfer. Thus the mas-
ter receiver receives all 1’s as serial data. While AA is reset, the TWI module does not
respond to its own slave address. However, the 2-wire bus is still monitored and
address recognition may be resume at any time by setting AA. This means that the AA
bit may be used to temporarily isolate the TWI module from the 2-wire bus.
Miscellaneous States
There are two SSCS codes that do not correspond to a define TWI hardware state
(Table 70 ). These codes are discuss hereafter.
Status F8h indicates that no relevant information is available because the serial interrupt
flag is not set yet. This occurs between other states and when the TWI module is not
involved in a serial transfer.
Status 00h indicates that a bus error has occurred during a TWI serial transfer. A bus
error is caused when a START or a STOP condition occurs at an illegal position in the
format frame. Examples of such illegal positions happen during the serial transfer of an
address byte, a data byte, or an acknowledge bit. When a bus error occurs, SI is set. To
recover from a bus error, the STO flag must be set and SI must be cleared. This causes
the TWI module to enter the not addressed slave mode and to clear the STO flag (no
other bits in SSCON are affected). The SDA and SCL lines are released and no STOP
condition is transmitted.
Notes
the TWI module interfaces to the external 2-wire bus via two port pins: SCL (serial clock
line) and SDA (serial data line). To avoid low level asserting on these lines when the
TWI module is enabled, the output latches of SDA and SLC must be set to logic 1.
Table 65. Bit Frequency Configuration
Bit Frequency ( kHz)
CR2
CR1
CR0
F
OSCA= 12 MHz
F
OSCA = 16 MHz
F
OSCA divided by
0
47
62.5
256
0
1
53.5
71.5
224
0
1
0
62.5
83
192
0
1
75
100
160
1
0
-
Unused
1
0
1
100
133.3
120
1
0
200
266.6
60
1
0.5 <. < 62.5
0.67 <. < 83
96 (256 - reload valueTimer 1)
(reload value range: 0-254 in mode 2)
相關(guān)PDF資料
PDF描述
AT89C51IC2-SLSIL IC 8051 MCU FLASH 32K 44PLCC
AT89C51CC03U-RLTIM IC 8051 MCU FLASH 64K 44VQFP
PIC24EP64MC204-I/PT MCU 16BIT 64KB FLASH 44TQFP
AT89C51CC03U-RDTIM IC 8051 MCU FLASH 64K 64VQFP
AT89C51CC03U-7CTIM IC 8051 MCU FLASH 64K 64BGA
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AT89C51ID2-RLTUM 功能描述:8位微控制器 -MCU C51ID2 64K FLASH 32KHz 3-5.5V 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
AT89C51ID2-SLRIM 功能描述:IC MCU FLASH 8051 64K 5V 44-PLCC RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微控制器, 系列:89C 標(biāo)準(zhǔn)包裝:1,500 系列:AVR® ATtiny 核心處理器:AVR 芯體尺寸:8-位 速度:16MHz 連通性:I²C,LIN,SPI,UART/USART,USI 外圍設(shè)備:欠壓檢測/復(fù)位,POR,PWM,溫度傳感器,WDT 輸入/輸出數(shù):16 程序存儲器容量:8KB(4K x 16) 程序存儲器類型:閃存 EEPROM 大小:512 x 8 RAM 容量:512 x 8 電壓 - 電源 (Vcc/Vdd):2.7 V ~ 5.5 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 11x10b 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 125°C 封裝/外殼:20-SOIC(0.295",7.50mm 寬) 包裝:帶卷 (TR)
AT89C51ID2-SLRUM 功能描述:8位微控制器 -MCU C51ID2 64K FLASH TWI 32KHz 5V 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
AT89C51ID2-SLSIM 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:8-bit Flash Microcontroller
AT89C51ID2-SLSUM 功能描述:8位微控制器 -MCU 64K FLASH 32KHz 3.5-5V Ind. 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