PSD834F5A-15UI Ver la hoja de datos (PDF) - STMicroelectronics

Número de pieza

componentes Descripción

Fabricante

PSD834F5A-15UI

Flash in-system programmable (ISP) ipherals for 8-bit MCUs, 5 V

STMicroelectronics 

AC/DC parameters

PSD8XXFX

Table 42. AC signal letters for PLD timing(1)

Letter

Signal description

A

Address input

C

CEout output

D

Input data

E

E output

G

Internal WDOG_ON signal

I

Interrupt input

L

ALE input

N

RESET input or output

t(s) P

Port signal output

c Q

Output data

du R

WR, UDS, LDS, DS, IORD, PSEN inputs

ro S

Chip Select input

P T

R/W input

te W

Internal PDN signal

ole M

Output macrocell

bs 1. Example: tAVLX = time from address valid to ALE invalid.

- O Table 43. AC signal behavior symbols for PLD timing(1)

t(s) Letter

AC signal description

c t

Time

du L

Logic level low or ALE

roH

Logic level high

PV

Valid

te X

No longer a valid logic level(2)

ole Z

Float

s PW

Pulse width

Ob 1. Example: tAVLX = time from address valid to ALE invalid.

2. Output Hi-Z is defined as the point where data out is no longer driven.

Table 44. AC measurement conditions

Symbol

Parameter

CL

Load capacitance

Min.

Max.

Unit

30

pF

96/128

Doc ID 7833 Rev 7

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