參數(shù)資料
型號: T89C51CC02UA-SISIM
廠商: ATMEL CORP
元件分類: 微控制器/微處理器
英文描述: Enhanced 8-bit Microcontroller with CAN Controller and Flash
中文描述: 8-BIT, FLASH, 40 MHz, MICROCONTROLLER, PQCC28
封裝: PLASTIC, LCC-28
文件頁數(shù): 159/170頁
文件大?。?/td> 1927K
代理商: T89C51CC02UA-SISIM
159
A/T89C51CC01
4129L–CAN–08/05
Clock Waveforms
Valid in normal clock mode. In X2 mode XTAL2 must be changed to XTAL2/2.
This diagram indicates when signals are clocked internally. The time it takes the signals to propagate to the pins, however,
ranges from 25 to 125 ns. This propagation delay is dependent on variables such as temperature and pin loading. Propaga-
tion 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.
DATA
PCL OUT
DATA
PCL OUT
DATA
PCL OUT
SAMPLED
FLOAT
SAMPLED
FLOAT
SAMPLED
FLOAT
STATE4
STATE5
STATE6
STATE1
STATE2
STATE3
STATE4
STATE5
P1
P2
P1
P2
P1
P2
P1
P2
P1
P2
P1
P2
P1
P2
P1
P2
THESE SIGNALS ARE NOT ACTIVATED DURING THE
EXECUTION OF A MOVX INSTRUCTION
INDICATES ADDRESS TRANSITIONS
EXTERNAL PROGRAM MEMORY FETCH
FLOAT
DATA
SAMPLED
DPL OR Rt OUT
INDICATES DPH OR P2 SFR TO PCH TRANSITION
PCL OUT (IF PROGRAM
MEMORY IS EXTERNAL)
PCL OUT (EVEN IF PROGRAM
MEMORY IS INTERNAL)
PCL OUT (IF PROGRAM
MEMORY IS EXTERNAL)
OLD DATANEW DATA
P0 PINS SAMPLED
P0 PINS SAMPLED
P1, P2, P3 PINS SAMPLED
P1, P2, P3 PINS SAMPLED
RXD SAMPLED
INTERNAL
CLOCK
XTAL2
ALE
PSEN
P0
P2 (EXT)
READ CYCLE
WRITE CYCLE
WR
RD
P0
P2
PORT OPERATION
MOV PORT SRC
MOV DEST P0
MOV DEST PORT (P1. P2. P3)
(INCLUDES INTO. INT1. TO T1)
SERIAL PORT SHIFT CLOCK
TXD (MODE 0)
DATA OUT
DPL OR Rt OUT
INDICATES DPH OR P2 SFR TO PCH TRANSITION
P0
P2
RXD SAMPLED
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