參數(shù)資料
型號： M8803F3Y-90K1T
廠商： STMICROELECTRONICS
元件分類： 微控制器/微處理器
英文描述： 1M X 1 FLASH, 27 I/O, PIA-GENERAL PURPOSE, PQCC52
封裝： PLASTIC, LCC-52
文件頁數(shù)： 52/85頁
文件大小： 601K
代理商： M8803F3Y-90K1T
M88 FAMILY
56/85
Table 42. Example of M88x3Fxx FLASH+PSD Typical Power Calculation at VCC = 5.0 V AC/DC
Condit ions
Highest Composite PLD input frequency
(Freq PLD)
= 8 MHz
MCU ALE frequency (Freq ALE)
= 4 MHz
% Flash Access
= 80%
% SRAM access
= 15%
% I/O access
= 5% (no additional power above base)
Operational Modes
% Normal
= 10%
% Power Down Mode
= 90%
Number of product terms used
(from fitter report)
= 45 PT
% of total product terms
= 45/182 = 24.7%
Turbo Mode
= Off
Calculation (using typical values)
ICC total
= Ipwrdown x %pwrdown + %normal x (ICC (ac) + ICC (dc))
= Ipwrdown x %pwrdown + % normal x (%flash x 2.5 mA/MHz x Freq ALE
+ %SRAM x 1.5 mA/MHz x Freq ALE
+ % PLD x (from graph using Freq PLD))
=50
A x 0.90 + 0.1 x (0.8 x 2.5 mA/MHz x 4 MHz
+ 0.15 x 1.5 mA/MHz x 4 MHz
+ 24 mA)
=45
A + 0.1 x (8 + 0.9 + 24)
=45
A + 0.1 x 32.9
=45
A + 3.29 mA
= 3.34 mA
This is the operating power with no EEPROM writes or Flash erases. Calculation is based on IOUT =0 mA.
相關PDF資料
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