UPD17145CT datasheet(85/102 Pages) NEC

85 / 102 page

µPD17145(A1), 17147(A1), 17149(A1)

Serial transfer operation (VDD = 2.7 to 5.5 V, Ta = –40 to +110

°C)

Parameter

Symbol

Condition

MIN.

TYP.

MAX.

Unit

VDD = 4.5 to 5.5 V

2.0

µs

RL = 1 k

Ω,VDD = 4.5 to 5.5 V

2.0

µs

CL = 100 pF

µs

Internal pull-up,

VDD = 4.5 to 5.5 V

µs

CL = 100 pF

µs

VDD = 4.5 to 5.5 V

1.0

µs

5.0

µs

SCK high-, low-level

t KH,

RL = 1 k

Ω,VDD = 4.5 to 5.5 V tKCY/2 – 0.6

µs

width

t KL

CL = 100 pF

t KCY/2 – 1.2

µs

Internal pull-up,

VDD = 4.5 to 5.5 V t KCY/2 – 12

µs

CL = 100 pF

t KCY/2 – 24

µs

SI setup time (to SCK

↑)tSIK

100

SI hold time (from SCK

↑)

t KSI

100

RL = 1 k

Ω, CL = 100 pF

VDD = 4.5 to 5.5 V

0.8

µs

SO output delay time

1.4

µs

from SCK

↓

Internal pull-up,

VDD = 4.5 to 5.5 V

µs

CL = 100 pF

µs

Remark RL: load resistance of output line

CL: load capacitance of output line

Serial transfer timing

Input

Output

SCK cycle time

t KCY

Input

Output

t KSO

VDD

Output line

SCK

t KCY

t KL

t KH

t SIK

t KSI

t KSO

Output data

Input data

UPD17145CT Datasheet(PDF) 85 Page - NEC

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