PSD813F1A datasheet(73/111 Pages) STMICROELECTRONICS

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PSD813F1A

AC/DC PARAMETERS

The following tables describe the AD and DC pa-

rameters of the PSD:

■

DC Electrical Specification

■

AC Timing Specification

PLD Timing

–

Combinatorial Timing

–

Synchronous Clock Mode

–

Asynchronous Clock Mode

–

Input Macrocell Timing

MCU Timing

–READ Timing

–

WRITE Timing

–

Peripheral Mode Timing

–

Power-down and Reset Timing

The following are issues concerning the parame-

ters presented:

■

In the DC specification the supply current is

given for different modes of operation. Before

calculating the total power consumption,

determine the percentage of time that the PSD

is in each mode. Also, the supply power is

considerably different if the Turbo bit is ‘0.’

■

The AC power component gives the PLD,

EEPROM and SRAM mA/MHz specification.

Figures 36 and 37 show the PLD mA/MHz as

a function of the number of Product Terms

(PT) used.

■

In the PLD timing parameters, add the

required delay when Turbo bit is ‘0.'

Figure 36. PLD ICC /Frequency Consumption (5V range)

Figure 37. PLD ICC /Frequency Consumption (3V range)

100

110

VCC = 5V

010

HIGHEST COMPOSITE FREQUENCY AT PLD INPUTS (MHz)

TURBO

(100%)

TURBO

(25%)

TURBO

OFF

PT 100%

PT 25%

AI02894

VCC = 3V

010

TURBO

ON (100%)

TURBO

ON (25%)

TURBO

OFF

HIGHEST COMPOSITE FREQUENCY AT PLD INPUTS (MHz)

PT 100%

PT 25%

AI03100

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