psd4235g2 STMicroelectronics, psd4235g2 Datasheet - Page 108

• Manufacturer Part Number: psd4235g2
• Description: Flash In-system Programmable Isp Peripherals For 16-bit Mcus 5v Supply
• Manufacturer: STMicroelectronics

DC and AC parameters
Table 55.
1. This is the operating power with no Flash memory Program or Erase cycles in progress. Calculation is based on I
108/129
MCU ALE frequency (Freq ALE)
I
CC
mA.
total
(Freq PLD)
% Flash memory Access
% SRAM access
% I/O access
% Normal
% Power-down Mode
(from fitter report)
% of total product terms
Turbo Mode
Example of PSD typical power calculation at V
Highest Composite PLD input frequency
Calculation (using typical values)
= 5% (no additional power above base)
= 45/193 = 23.3%
= 8 MHz
= 4 MHz
= 80%
= 15%
= 10%
= 90%
= 45 PT
= Off
= Ipwrdown x %pwrdown + %normal x (I
= Ipwrdown x %pwrdown + % normal x (%flash x 2.5 mA/MHz x Freq ALE
= 50µA x 0.90 + 0.1 x (0.8 x 2.5 mA/MHz x 4 MHz
= 45µA + 0.1 x (8 + 0.9 + 24)
= 45µA + 0.1 x 32.9
= 45µA + 3.29 mA
= 3.34 mA
Number of product terms used
Operational modes
Conditions
+ %SRAM x 1.5 mA/MHz x Freq ALE
+ % PLD x (from graph using Freq PLD))
+ 0.15 x 1.5 mA/MHz x 4 MHz
+ 24 mA)
CC
= 5.0V (with Turbo mode off)
CC
(ac) + I
CC
(dc))
PSD4235G2
OUT
(1)
= 0