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參數(shù)資料
| 型號： | MJ-80C32E-30/883 |
| 廠商： | ATMEL CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, 30 MHz, MICROCONTROLLER, PQCC44 |
| 封裝： | MQFP-44 |
| 文件頁數(shù)： | 9/20頁 |
| 文件大?。?/td> | 239K |
| 代理商： | MJ-80C32E-30/883 |
17
80C32E
Rev. K – 21-Aug-01
Figure 14. Clock Waveforms
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. 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
STATE
EXTERNAL PROGRAM MEMORY FETCH
READ CYCLE
WRITE CYCLE
SERIAL PORT SHIFT CLOCK
PORT OPERATION
PSEN
P0
P2 (EXT)
RD
P0
P2
P0
P2
WR
TXD (MODE 0)
RXD SAMPLED
P0 PINS SAMPLED
P1, P2, P3 PINS
P0 PINS SAMPLED
MOV DEST PORT (P1, P2,
(INCLUDES INT0, INT1, TO, T1)
MOV DEST P0
OLD DATA
NEW DATA
DPL OR Rt
DATA OUT
PCL OUT (EVEN IF
MEMORY IS INTERNAL)
PCL OUT (IF PROGRAM
MEMORY IS EXTERNAL)
INDICATES DPH OR P2 SFR TO PCH
DPL OR Rt
FLOAT
PCL OUT (IF PROGRAM
MEMORY IS EXTERNAL)
INDICATES DPH OR P2 SFR TO PCH
INDICATES ADDRESS
FLOAT
PCL OUT
DATA
SAMPLE
DATA
SAMPLE
DATA
SAMPLE
THESE SIGNALS ARE NOT ACTIVATED DURING THE
EXECUTION OF A MOVX INSTRUCTION
P1P2
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