Figure 14-5. Clock Signal Waveform for ICC Tests in Ac" />
參數(shù)資料
型號： TS80C31X2-LIE
廠商： Atmel
文件頁數(shù)： 24/42頁
文件大?。?/td> 0K
描述： IC MCU 8BIT 30/20MHZ 44-VQFP
標(biāo)準(zhǔn)包裝： 9
系列： 80C
核心處理器： 8051
芯體尺寸： 8-位
速度： 30/20MHz
連通性： UART/USART
外圍設(shè)備： POR
輸入/輸出數(shù)： 32
程序存儲器類型： ROMless
RAM 容量： 128 x 8
電壓 - 電源 (Vcc/Vdd)： 2.7 V ~ 5.5 V
振蕩器型： 內(nèi)部
工作溫度： -40°C ~ 85°C
封裝/外殼： 44-QFP
包裝： 托盤
30
4428E–8051–02/08
AT/TS80C31X2
Figure 14-5. Clock Signal Waveform for ICC Tests in Active and Idle Modes
14.5
AC Parameters
14.5.1
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 sta-
tus 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 (commercial temperature range); VSS = 0 V; VCC = 5 V ± 10%; -M and -V ranges.
TA = -40°C to +85°C (industrial temperature range); VSS = 0 V; VCC = 5 V ± 10%; -M and -V
ranges.
TA = 0 to +70°C (commercial temperature range); VSS = 0 V; 2.7 V < VCC < 5.5 V; -L range.
TA = -40°C to +85°C (industrial temperature range); VSS = 0 V; 2.7 V < VCC < 5.5 V; -L range.
Table 14-3. gives the maximum applicable load capacitance for Port 0, Port 1, 2 and 3, and ALE
and PSEN signals. Timings will be guaranteed if these capacitances are respected. Higher
capacitance values can be used, but timings will then be degraded.
Table 14-3.
Load Capacitance versus speed range, in pF
Table 8-5., Table 8-8. and Table 8-11. give the description of each AC symbols.
Table 14-6., Table 14-9. and Table 14-12. give for each range the AC parameter.
V
CC-0.5V
0.45V
0.7V
CC
0.2V
CC-0.1
T
CLCH
T
CHCL
TCLCH = TCHCL = 5ns.
-M
-V
-L
Port 0
100
50
100
Port 1, 2, 3
80
50
80
ALE / PSEN
100
30
100
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