PSD813F2 datasheet(75/110 Pages) STMICROELECTRONICS

75 / 110 page

PSD8XX Family

PSD835G2

AC/DC

Parameters

The following tables describe the AD/DC parameters of the PSD8XX family:

t DC Electrical Specification

t AC Timing Specification

• PLD Timing

– Combinatorial Timing

– Synchronous Clock Mode

– Asynchronous Clock Mode

– Input Micro

⇔Cell Timing

• Microcontroller Timing

– Read Timing

– Write Timing

– Peripheral Mode Timing

– Power Down and Reset Timing

Following are issues concerning the parameters presented:

t 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 PSD8XX is in each mode. Also, the supply power is considerably different if the

Turbo bit is "OFF".

t The AC power component gives the PLD, Flash memory, and SRAM mA/MHz

specification. Figures 32 and 32a show the PLD mA/MHz as a function of the number

of Product Terms (PT) used.

t In the PLD timing parameters, add the required delay when Turbo bit is "OFF".

Figure 32. PLD ICC /FrequencyConsumption (VCC = 5 V ± 10%)

100

110

VCC = 5V

010

HIGHEST COMPOSITE FREQUENCY AT PLD INPUTS (MHz)

TURBO

(100%)

TURBO

(25%)

TURBO

OFF

PT 100%

PT 25%

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