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| 型號： | AT89EB5114-TGSIL |
| 廠商： | Atmel |
| 文件頁數(shù)： | 4/86頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC 8051 MCU FLASH 4K 20SOIC |
| 產(chǎn)品培訓模塊： | MCU Product Line Introduction |
| 標準包裝： | 38 |
| 系列： | 89EB |
| 核心處理器： | 8051 |
| 芯體尺寸： | 8-位 |
| 速度： | 40MHz |
| 外圍設(shè)備： | POR，PWM，WDT |
| 輸入/輸出數(shù)： | 11 |
| 程序存儲器容量： | 4KB（4K x 8） |
| 程序存儲器類型： | 閃存 |
| EEPROM 大?。?/td> | 256 x 8 |
| RAM 容量： | 256 x 8 |
| 電壓 - 電源 (Vcc/Vdd)： | 3 V ~ 3.6 V |
| 數(shù)據(jù)轉(zhuǎn)換器： | A/D 6x10b |
| 振蕩器型： | 內(nèi)部 |
| 工作溫度： | -40°C ~ 85°C |
| 封裝/外殼： | 20-SOIC（0.295"，7.50mm 寬） |
| 包裝： | 管件 |
| 產(chǎn)品目錄頁面： | 616 (CN2011-ZH PDF) |
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12
AT89/83EB5114
4311C–8051–02/08
Crystal Oscillator: OSCA
The crystal oscillator uses two external pins, XTAL1 for input and XTAL2 for output.
OSCAEN in OSCCON register is an enable signal for the crystal oscillator or for the
external oscillator input that can be provided on XTAL1.
High Accurate RC Oscillator:
OSCB
The high accuracy RC oscillator needs external R and C components to assure the
proper accuracy; its typical frequency is 12 MHz. Frequency accuracy is a function of
external R and C accuracy. It is recommended to use 0.5% or better for R and 1% for C
components. (Typical values are R = 49.9 K and C = 560 pF)
This oscillator has two modes.
OSCBEN = 1 and LCKEN = 0: Standard accuracy mode(Typical frequency 12 MHz)
OSCBEN = 1 and LCKEN = 1: High accuracy mode (Typical frequency 12 MHz).
The OSCB oscillator is based on a low frequency RC oscillator and a VCO. When
locked, the oscillator frequency is defined by the following formula:
F = 3*[OSCBFA+1]/(R.C). with C including parasitic capacitances.
Because the oscillator is based on a PLL, it needs several periods to reach its final
accuracy. As soon as this accuracy is reached, the OSCBRY bit in OSCCON
register is set by hardware.
The internal frequency is locked on the external RC time constant. So it is possible
to adjust frequency by lower than 1% steps with the OSCBFA register. However the
frequency adjustment is limited to +/-15% around 12 MHz.
The frequency can be adjusted until 15% around 12 MHz by OSCBFA Register.
OSCBEN and LCKEN are in the OSCCON register.
Low Power Consumption
Oscillator: OSCC
The low power consumption RC oscillator doesn’t need any external components. More-
over its consumption is very low. Its typical frequency is 14 MHz. Note that this on-chip
oscillator has a +/- 40% frequency tolerance and may not be suitable for use in certain
applications.
OSCC is set by OSCCEN bit in OSCCON.
Clock Selector
CKS1 and CKS0 bits in CKSEL register are used to select the clock source.
OSCCEN bit in OSCCON register is used to enable the low power consumption RC
oscillator.
OSCBEN bit in OSCCON register is used to enable the high accurate RC oscillator.
OSCAEN bit in OSCCON register is used to enable the crystal oscillator or the external
oscillator input.
X2 Feature
The AT8xEB5114 core needs only 6 clock periods per machine cycle. This feature
called ”X2” provides the following advantages:
Divides frequency crystals by 2 (cheaper crystals) while keeping same CPU power.
Saves power consumption while keeping same CPU power (oscillator power
saving).
Saves power consumption by dividing dynamically the operating frequency by 2 in
operating and idle modes.
Increases CPU power by 2 while keeping same crystal frequency.
In order to keep the original C51 compatibility, a divider by 2 is inserted between the
XTAL1 signal and the main clock input of the core (phase generator). This divider may
be enabled or disabled by software.
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| AT89EB5114-TGSUL | 功能描述:8位微控制器 -MCU A/D 4K Flash 256EE RC 4PWM SO20 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 |
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| AT89EVK-01 | 功能描述:開發(fā)板和工具包 - 8051 AT83C24 Kit for TDA8004/8024 rplcmnt RoHS:否 制造商:Silicon Labs 產(chǎn)品:Development Kits 工具用于評估:C8051F960, Si7005 核心: 接口類型:USB 工作電源電壓: |
| AT89ISP | 功能描述:電纜組件 ISP CABLE FOR 89S SERIES - ISP CABLE RoHS:否 制造商:Molex 產(chǎn)品:Power Assemblies 類型:Cable Assembly 連接器端口 A:No Connector 連接器端口 A 管腳計數(shù):4 連接器端口 B:No Connector 連接器端口 B 管腳計數(shù): 型式:Male 線規(guī) - 美國線規(guī)（AWG）:20, 28 長度:0.305 m 顏色:Black, Red |
| AT89LP2052-16PI | 功能描述:8位微控制器 -MCU Microcontroller 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 |
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