參數(shù)資料
型號(hào)： AT87C51RD2-3CSUM
廠商： International Rectifier
英文描述： High Performance 8-bit Microcontroller
中文描述： 高性能8位微控制器
文件頁(yè)數(shù)： 72/85頁(yè)
文件大?。?/td> 762K
代理商： AT87C51RD2-3CSUM
72
4188E–8051–08/06
AT/TS8xC51Rx2
11.5.15
Clock Waveforms
Valid in normal clock mode. In X2 mode XTAL2 signal must be changed to XTAL2 divided by
two.
Figure 11-14.
Clock Waveforms
This diagram indicates when signals are clocked internally. The time it takes the signals to prop-
agate to the pins, however, ranges from 25 to 125 ns. This propagation delay is dependent on
variables such as temperature and pin loading. Propagation also varies from output to output
and component. Typically though (T
A
=25
°
C fully loaded) RD and WR propagation delays are
approximately 50ns. The other signals are typically 85 ns. Propagation delays are incorporated
in the AC specifications.
CLOCK
XTAL2
ALE
INTERNAL
STATE4
STATE5
STATE6
STATE1
STATE2
STATE3
STATE4
STATE5
EXTERNAL PROGRAM MEMORY FETCH
READ CYCLE
WRITE CYCLE
SERIAL PORT SHIFT CLOCK
TXD (MODE 0)
PORT OPERATION
PSEN
P0
P2 (EXT)
RD
P0
P2
P0
P2
WR
RXD SAMPLED
RXD SAMPLED
P0 PINS SAMPLED
P1, P2, P3 PINS SAMPLED
P1, P2, P3 PINS SAMPLED
P0 PINS SAMPLED
MOV DEST PORT (P1, P2, P3)
(INCLUDES INT0, INT1, TO, T1)
MOV DEST P0
OLD DATA
NEW DATA
DPL OR Rt OUT
DATA OUT
PCL OUT (EVEN IF PROGRAM
MEMORY IS INTERNAL)
PCL OUT (IF PROGRAM
MEMORY IS EXTERNAL)
INDICATES DPH OR P2 SFR TO PCH TRANSITION
DPL OR Rt OUT
FLOAT
PCL OUT (IF PROGRAM
MEMORY IS EXTERNAL)
INDICATES DPH OR P2 SFR TO PCH TRANSITION
INDICATES ADDRESS TRANSITIONS
FLOAT
FLOAT
FLOAT
PCL OUT
PCL OUT
PCL OUT
DATA
SAMPLED
DATA
SAMPLED
DATA
SAMPLED
THESE SIGNALS ARE NOT ACTIVATED DURING THE
EXECUTION OF A MOVX INSTRUCTION
P1P2
P1P2
P1P2
P1P2
P1P2
P1P2
P1P2
P1P2
相關(guān)PDF資料
PDF描述
AT87C51RD2-RLTUL High Performance 8-bit Microcontroller
AT87C51RD2-RLTUM High Performance 8-bit Microcontroller
AT87C51RD2-SLSUL High Performance 8-bit Microcontroller
AT87C51RD2-SLSUM High Performance 8-bit Microcontroller
ATO28XXT ADVANCED ANALOG HYBRID-HIGH RELIABILITY DC/DC CONVERTERS
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AT87C51RD2-RDTUL 功能描述:8位微控制器 -MCU C52 0.5 mX 2 OTP 3.3V 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
AT87C51RD2-RDTUM 功能描述:8位微控制器 -MCU C52 0.5 mX2 OTP 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(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
AT87C51RD2-RLTUL 功能描述:8位微控制器 -MCU C52 0.5 m X 2 OTP 3.3V 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
AT87C51RD2-RLTUM 功能描述:8位微控制器 -MCU C52 0.5 m X 2 OTP 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(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
AT87C51RD2-SLSUL 功能描述:8位微控制器 -MCU 1024B RAM 40MHz 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(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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