BU9831F Ver la hoja de datos (PDF) - ROHM Semiconductor

Número de pieza

componentes Descripción

Fabricante

BU9831F

Non-volatile electronic potentiometer

ROHM Semiconductor 

Memory ICs

(unless otherwise noted, Ta = – 20 to + 85°C, VCC = 5V ± 10%)

Parameter

Symbol Min. Typ. Max. Unit

CS setup time

tCSS 400 —

—

ns

CS hold time

tCSH

0

— — ns

Data setup time

tDIS 300 —

—

ns

Data hold time

tDIH 300 —

—

ns

DO rise delay time

tPD1

—

— 700 ns

DO fall delay time

tPD0

—

— 700 ns

Self-timed programming cycle

tE / W — — 15 ms

CS minimum HIGH time

tCS

2

—

—

µs

Time during which READY / BUSY display is effective tSV

—

—

2

µs

Time that DO is HIGH-Z from (CS)

tOH

0

— 800 ns

Data clock HIGH time

tWH 900 —

—

ns

Data clock LOW time

tWL 900 —

—

ns

Resistance value stabilization time

tAW

—

— 1000 µs

BU9831 / BU9831F

•Synchronous data I / O timing

CS

SK

Input DIO

Output DIO

t CSS

t WL

t DIS

t PD

t WH

t DIH

t PD

t CS

t CSH

t OH

Fig. 10 Synchronous data I / O timing

᭺Reading of input data is done at the rising edge of SK.

᭺Output of data is synchronized to the falling edge of SK.

᭺Between commands, CS should be set to HIGH for longer than tCS.

If CS remains LOW, the next command cannot be received.

7

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