參數(shù)資料
型號: AT89C51RD2-SLRUM
廠商: Atmel
文件頁數(shù): 48/137頁
文件大小: 0K
描述: IC MCU FLASH 8051 EEP 64K 44PLCC
產(chǎn)品培訓模塊: MCU Product Line Introduction
標準包裝: 1
系列: 89C
核心處理器: 8051
芯體尺寸: 8-位
速度: 60MHz
連通性: 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
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-LCC(J 形引線)
包裝: 標準包裝
配用: AT89OCD-01-ND - USB EMULATOR FOR AT8XC51 MCU
AT89STK-11-ND - KIT STARTER FOR AT89C51RX2
其它名稱: AT89C51RD2-SLRUMDKR
18
4235K–8051–05/08
AT89C51RD2/ED2
Figure 7-1.
Clock Generation Diagram
Figure 7-2.
Mode Switching Waveforms
The X2 bit in the CKCON0 register (see Table 7-1) allows a switch from 12 clock periods per
instruction to 6 clock periods and vice versa. At reset, the speed is set according to X2 bit of
Hardware Security Byte (HSB). By default, Standard mode is active. Setting the X2 bit activates
the X2 feature (X2 mode).
The T0X2, T1X2, T2X2, UartX2, PcaX2, and WdX2 bits in the CKCON0 register (Table 7-1) and
SPIX2 bit in the CKCON1 register (see Table 7-2) allows a switch from standard peripheral
speed (12 clock periods per peripheral clock cycle) to fast peripheral speed (6 clock periods per
peripheral clock cycle). These bits are active only in X2 mode.
Table 7-1.
CKCON0 Register
CKCON0 - Clock Control Register (8Fh)
XTAL1
2
CKCON0
X2
8-bit Prescaler
F
OSC
FXTAL
0
1
XTAL1:2
F
CLK CPU
F
CLK PERIPH
CKRL
XTAL1:2
XTAL1
CPU Clock
X2 Bit
X2 Mode
STD Mode
F
OSC
7
6
5
4
3
2
1
0
-
WDX2
PCAX2
SIX2
T2X2
T1X2
T0X2
X2
Bit
Number
Bit
Mnemonic
Description
7
Reserved
The values for this bit are indeterminite. Do not set this bit.
6
WDX2
Watchdog Clock
(This control bit is validated when the CPU clock X2 is set; when X2 is low, this bit has no
effect).
Cleared to select 6 clock periods per peripheral clock cycle.
Set to select 12 clock periods per peripheral clock cycle.
相關(guān)PDF資料
PDF描述
VE-23V-IY-F2 CONVERTER MOD DC/DC 5.8V 50W
VE-23V-IY-F1 CONVERTER MOD DC/DC 5.8V 50W
D-621-0424 CONN JACK TRIAXIAL W/SOCKET
5221629-6 CONN TERMINATR PLUG BNC 93OHM AU
VE-23T-IY-F2 CONVERTER MOD DC/DC 6.5V 50W
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AT89C51RD2-SLSIM 功能描述:IC 8051 MCU FLASH 64K 44PLCC RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微控制器, 系列:89C 標準包裝:9 系列:87C 核心處理器:8051 芯體尺寸:8-位 速度:40/20MHz 連通性:UART/USART 外圍設(shè)備:POR,WDT 輸入/輸出數(shù):32 程序存儲器容量:32KB(32K x 8) 程序存儲器類型:OTP EEPROM 大小:- RAM 容量:256 x 8 電壓 - 電源 (Vcc/Vdd):4.5 V ~ 5.5 V 數(shù)據(jù)轉(zhuǎn)換器:- 振蕩器型:內(nèi)部 工作溫度:0°C ~ 70°C 封裝/外殼:40-DIP(0.600",15.24mm) 包裝:管件
AT89C51RD2-SLSUM 功能描述:8位微控制器 -MCU 64kB Flash 2048B RAM 2.7V-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 安裝風格:SMD/SMT
AT89C51RD2-SLSUM 制造商:Atmel Corporation 功能描述:IC 8BIT MCU C51/C251 60MHZ 44-PLCC
AT89C51RD2-SMSIM 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:8-bit Flash Microcontroller
AT89C51RD2-SMSUM 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:8-bit Flash Microcontroller