PSD4251F6-70UI 데이터 시트보기 (PDF) - STMicroelectronics

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PSD4251F6-70UI

Flash In-System Programmable (ISP) Peripherals For 16-bit MCUs (5V Supply)

STMicroelectronics 

PSD4235G2

DC AND AC PARAMETERS

This section summarizes the operating and mea-

surement conditions, and the DC and AC charac-

teristics of the device. The parameters in the DC

and AC Characteristic tables that follow are de-

rived from tests performed under the Measure-

ment Conditions summarized in the relevant

tables. Designers should check that the operating

conditions in their circuit match the measurement

conditions when relying on the quoted parame-

ters.

Table 56. Operating Conditions

Symbol

Parameter

VCC

Supply Voltage

Ambient Operating Temperature (industrial)

TA

Ambient Operating Temperature (commercial)

Min.

Max.

Unit

4.5

5.5

V

–40

85

°C

0

70

°C

Table 57. AC Symbols for PLD Timing

Signal Letters

Signal Behavior

A Address Input

t Time

C CEout Output

L Logic Level Low or ALE

D Input Data

H Logic Level High

E E Input

V Valid

G Internal WDOG_ON signal

X No Longer a Valid Logic Level

I Interrupt Input

Z Float

L ALE Input

PW Pulse Width

N Reset Input or Output

P Port Signal Output

Q Output Data

R WR, UDS, LDS, DS, IORD, PSEN Inputs

S Chip Select Input

T R/W Input

W Internal PDN Signal

B VSTBY Output

M Output Macrocell

Example: tAVLX – Time from Address Valid to ALE Invalid.

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