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T89C51RD2-3CWC-L Datasheet(PDF) 76 Page - ATMEL Corporation

Part # T89C51RD2-3CWC-L
Description  0 to 40MHz Flash Programmable 8-bit Microcontroller
PDF  86 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

T89C51RD2-3CWC-L Datasheet(HTML) 76 Page - ATMEL Corporation

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Rev. F - 15 February, 2001
76
T89C51RD2
9.5.2. External Program Memory Characteristics
Table 38. Symbol Description
Symbol
Parameter
T
Oscillator clock period
TLHLL
ALE pulse width
TAVLL
Address Valid to ALE
TLLAX
Address Hold After ALE
TLLIV
ALE to Valid Instruction In
TLLPL
ALE to PSEN
TPLPH
PSEN Pulse Width
TPLIV
PSEN to Valid Instruction In
TPXIX
Input Instruction Hold After PSEN
TPXIZ
Input Instruction FloatAfter PSEN
TAVIV
Address to Valid Instruction In
TPLAZ
PSEN Low to Address Float
Table 39. AC Parameters for a Fix Clock
Symbol
-M
-L
Units
Min
Max
Min
Max
T
25
25
ns
TLHLL
40
40
ns
TAVLL
10
10
ns
TLLAX
10
10
ns
TLLIV
70
70
ns
TLLPL
15
15
ns
TPLPH
55
55
ns
TPLIV
35
35
ns
TPXIX
0
0
ns
TPXIZ
18
18
ns
TAVIV
85
85
ns
TPLAZ
10
10
ns



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