參數(shù)資料
型號: T89C51RD2-SLSCL
廠商: ATMEL CORP
元件分類: 微控制器/微處理器
英文描述: 0 to 40 MHz Flash Programmable 8-bit Microcontroller
中文描述: 8-BIT, FLASH, 25 MHz, MICROCONTROLLER, PQCC44
封裝: PLASTIC, LCC-44
文件頁數(shù): 86/104頁
文件大小: 798K
代理商: T89C51RD2-SLSCL
86
T89C51RD2
4243G
8051
05/03
External Program Memory
Characteristics
Symbol
Parameter
T
Oscillator clock period
T
LHLL
ALE pulse width
T
AVLL
Address Valid to ALE
T
LLAX
Address Hold After ALE
T
LLIV
ALE to Valid Instruction In
T
LLPL
ALE to PSEN
T
PLPH
PSEN Pulse Width
T
PLIV
PSEN to Valid Instruction In
T
PXIX
Input Instruction Hold After PSEN
T
PXIZ
Input Instruction Float After PSEN
T
AVIV
Address to Valid Instruction In
T
PLAZ
PSEN Low to Address Float
Table 46.
AC Parameters for a Fix Clock
Symbol
-M
-L
Units
Min
Max
Min
Max
T
25
25
ns
T
LHLL
40
40
ns
T
AVLL
10
10
ns
T
LLAX
10
10
ns
T
LLIV
70
70
ns
T
LLPL
15
15
ns
T
PLPH
55
55
ns
T
PLIV
35
35
ns
T
PXIX
0
0
ns
T
PXIZ
18
18
ns
T
AVIV
85
85
ns
T
PLAZ
10
10
ns
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