PSD4235G2-12UIT STMICROELECTRONICS [STMicroelectronics], PSD4235G2-12UIT Datasheet - Page 102

• Manufacturer Part Number: PSD4235G2-12UIT
• Description: Flash in-system programmable (ISP) peripherals for 16-bit MCUs (3.3 V supply)
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

DC and AC parameters
Table 53.
1. This is the operating power with no Flash memory Program or Erase cycles in progress. Calculation is based on
102/124
MCU ALE frequency (Freq ALE)
I
CC
I
OUT
total
=0 mA.
(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)
= 54 PT
= 54/127 = 25%
= 8 MHz
= 4 MHz
= 80%
= 15%
= 5% (no additional power above base)
= 10%
= 90%
= ON
= Ipwrdown x %pwrdown + %normal x (I
= Ipwrdown x %pwrdown + % normal x (%flash x 1.2 mA/MHz x Freq ALE
= 50 µA x 0.90 + 0.1 x (0.8 x 1.2 mA/MHz x 4 MHz
= 45 µA + 0.1 x (3.84 + 0.48 + 8.8 + 10.8 mA)
= 45 µA + 0.1 x 23.92
= 45 µA + 2.39 mA
= 2.43 mA
Number of product terms used
Operational Modes
Conditions
+ %SRAM x 0.8 mA/MHz x Freq ALE
+ % PLD x 1.1 mA/MHz x Freq PLD
+ #PT x 200 µA/PT)
+ 0.15 x 0.8 mA/MHz x 4 MHz
+ 1.1 mA/MHz x 8 MHz
+ 54 x 0.2 mA/PT)
CC
= 3.0 V (with Turbo mode on)
CC
(ac) + I
CC
(dc))
PSD4235G2V
(1)