TSC87C52-25IGR 查看數據表（PDF） - Temic Semiconductors
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TSC87C52-25IGR Datasheet PDF : 24 Pages
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TSC87C52
AC Parameters
Explanation of the AC Symbols
Each timing symbol has 5 characters. The first character is always a “T” (stands for time). The other characters,
depending on their positions, stand for the name of a signal or the logical status of that signal. The following is a list
of all the characters and what they stand for.
Example:
TAVLL = Time for Address Valid to ALE Low.
TLLPL = Time for ALE Low to PSEN Low.
TA = 0 to +70_C; VSS = 0V VCC = 5V±10%; 0 to 12MHz
TA = –40°C to +85°C; VSS = 0V; VCC = 5V ± 10%; F = 0 to 12MHz.
(Load Capacitance for PORT 0, ALE and PSEN = 100pf; Load Capacitance for all other outputs = 80 pF.)
External Program Memory Characteristics
Symbol
TLHLL
TAVLL
TLLAX
TLLIV
TLLPL
TPLPH
TPLIV
TPXIX
TPXIZ
TPXAV
TAVIV
TPXAV
Parameter
ALE pulse width
Address Valid to ALE
Address Hold After ALE
ALE to Valid Instruction In
ALE to PSEN
PSEN Pulse Width
PSEN to Valid Instruction In
Input Instruction Hold After PSEN
Input Instruction FloatAfter PSEN
PSEN to Address Valid
Address to Valid Instruction In
PSEN Low to Address Float
0 to 12MHz
Min
Max
2TCLCL – 40
TCLCL – 40
TCLCL – 30
4TCLCL – 100
TCLCL – 30
3TCLCL – 45
3TCLCL – 105
0
TCLCL – 25
TCLCL – 8
5TCLCL – 105
10
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
External Program Memory Read Cycle
ALE
PSEN
PORT 0 INSTR IN
TLHLL
TLLAX
TAVLL
A0–A7
TLLIV
TLLPL
TPLPH
12 TCLCL
TPLIV
TPLAZ
TPXIX
INSTR IN
TPXAV
TPXIZ
A0–A7
PORT 2
ADDRESS
OR SFR–P2
TAVIV
ADDRESS A8–A15
INSTR IN
ADDRESS A8–A15
18
MATRA MHS
Rev. C – 10 Sept 1997
Preliminary
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