PSD813F2 datasheet(74/110 Pages) STMICROELECTRONICS

部件名	PSD813F2

功能描述	Flash In-System Programmable (ISP) Peripherals for 8-bit MCUs, 5V

PDF	110 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

标志

74 / 110 page

PSD813F2, PSD833F2, PSD834F2, PSD853F2, PSD854F2

74/110

Table 37. Example of PSD Typical Power Calculation at VCC = 5.0V (Turbo Mode Off)

Conditions

Highest Composite PLD input frequency

(Freq PLD)

= 8 MHz

MCU ALE frequency (Freq ALE)

= 4 MHz

% Flash memory 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 2.5mA/MHz x Freq ALE

+ %SRAM x 1.5mA/MHz x Freq ALE

+ % PLD x (from graph using Freq PLD))

= 50µA x 0.90 + 0.1 x (0.8 x 2.5mA/MHz x 4 MHz

+ 0.15 x 1.5mA/MHz x 4 MHz

+ 24mA)

= 45µA + 0.1 x (8 + 0.9 + 24)

= 45µA + 0.1 x 32.9

= 45µA + 3.29mA

= 3.34mA

This is the operating power with no EEPROM WRITE or Flash memory Erase cycles in progress. Calculation is based

on IOUT = 0mA.

PSD813F2 数据表(PDF) 74 Page - STMicroelectronics

PSD813F2 数据表(HTML) 74 Page - STMicroelectronics

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

数据表下载