NJU3504FA1 查看數據表（PDF） - Japan Radio Corporation

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NJU3504FA1

4-BIT SINGLE CHIP MICRO CONTROLLER

Japan Radio Corporation  

NJU3504

s ELECTRICAL CHARACTERISTICS

AC CHARACTERISTICS 2 ٠ SERIAL INTERFACE

PARAMETER SYMBOL

CONDITIONS

(VDD=2.4 − 5.5V, VSS=0V, Ta=-20 − 75°C)

MIN TYP

MAX

UNIT

Serial Operating

fSC Internal Clock

Frequency

External Clock

(1/12)×fOSC* Hz

500k

Clock Pulse Width

Low-Level

tSCL

Internal Clock

VDD=2.4−3.6V

fOSC=2MHz

3.0

µs

VDD=3.6−5.5V

1.5

fOSC=4MHz

External Clock

1.0

Clock Pulse Width

tSCH Internal Clock VDD=2.4−3.6V

3.0

µs

High-Level

fOSC=2MHz

VDD=3.6−5.5V

1.5

fOSC=4MHz

External Clock

1.0

SDI setup Time

tDS

To SCK ↑

SDI Hold time

tDH

To SCK ↑

SDO Data Fix

tDCD

Time To SCK ↓

0.5

µs

0.5

µs

0.5

µs

* The maximum frequency of the internal serial clock fSC is selected the one-divided output of the prescaler by

the mask option.

s AC CHARACTERISTICS 2 SERIAL INTERFACE TIMING CHART

SCK

SDI(O)

SDO/SDI(O)

1/fSC

tSCL

tSCH

VIH1

VIL1

tDCD

tDS

tDH

INPUT DATA

VIH1

VIL1

VOH

VOL1

OUTPUT DATA

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