參數(shù)資料
型號(hào)： TSC87C52-12AIR
廠商： ATMEL CORP
元件分類(lèi)： 微控制器/微處理器
英文描述： 8-BIT, OTPROM, 12 MHz, MICROCONTROLLER, CQCC44
封裝： CERAMIC, QPJ-44
文件頁(yè)數(shù)： 10/24頁(yè)
文件大?。?/td> 181K
代理商： TSC87C52-12AIR
TSC87C52
18
Rev. D – December 14, 1998
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
TA = –40
_C to +125_C; VSS = 0V VCC = 5V±10%; 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
Parameter
0 to 12MHz
Units
Symbol
Parameter
Min
Max
Units
TLHLL
ALE pulse width
2TCLCL – 40
ns
TAVLL
Address Valid to ALE
TCLCL – 40
ns
TLLAX
Address Hold After ALE
TCLCL – 30
ns
TLLIV
ALE to Valid Instruction In
4TCLCL – 100
ns
TLLPL
ALE to PSEN
TCLCL – 30
ns
TPLPH
PSEN Pulse Width
3TCLCL – 45
ns
TPLIV
PSEN to Valid Instruction In
3TCLCL – 105
ns
TPXIX
Input Instruction Hold After PSEN
0
ns
TPXIZ
Input Instruction FloatAfter PSEN
TCLCL – 25
ns
TPXAV
PSEN to Address Valid
TCLCL – 8
ns
TAVIV
Address to Valid Instruction In
5TCLCL – 105
ns
TPXAV
PSEN Low to Address Float
10
ns
External Program Memory Read Cycle
TPLIV
TPLAZ
ALE
PSEN
PORT 0
PORT 2
A0–A7
INSTR IN
ADDRESS
OR SFR–P2
ADDRESS A8–A15
12 TCLCL
TAVIV
TLHLL
TAVLL
TLLIV
TLLPL
TPLPH
TPXAV
TPXIX
TPXIZ
TLLAX
相關(guān)PDF資料
PDF描述
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