HT1632C(2015) 데이터 시트보기 (PDF) - Holtek Semiconductor

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HT1632C
(Rev.:2015)

32×8 & 24×16 LED Driver

Holtek Semiconductor 

HT1632C

A.C. Characteristics

VDD=2.4V~5.5V, Ta=25°C (Unless otherwise specified)

Symbol

Parameter

fSYS

System Clock

fLED

LED Duty Cycle & Frame

Frequency

fCLK1

Serial Data Clock (WR pin)

fCLK2

Serial Data Clock (RD pin)

tCS

Serial Interface Reset Pulse Width

tCLK

WR, RD Input Pulse Width

tr, tf

Rise/Fall Time Serial Data

Clock Width (Figure 1)

Test Conditions

VDD

Conditions

5V On-chip RC oscillator

1/8 duty

5V

1/16 duty

5V Duty cycle 50%

5V Duty cycle 50%

— CS

Write mode

5V

Read mode

——

Min. Typ. Max.

230

256

282

— fSYS/2624 —

— fSYS/2624 —

—

—

1

—

—

500

250

—

—

0.5

—

—

1.0

—

—

—

50

100

Unit

kHz

Hz

Hz

MHz

kHz

ns

µs

ns

tsu

Setup Time for DATA to WR,

RD Clock Width (Figure 2)

——

50

100

—

ns

th

Hold Time for DATA to WR, RD,

Clock Width (Figure 2)

——

100

200

—

ns

tsu1

Setup Time for CS to WR, RD,

Clock Width (Figure 3)

——

200

300

—

ns

th1

Hold Time for CS to WR, RD,

Clock Width (Figure 3)

——

100

200

—

ns

tod

Data Output Delay Time

(Figure 4)

——

—

100

200

ns

V a lid D a ta

V DD

D ATA

50%

GND

W R ,R D

C lo c k

9

5

0

1

0

%

0

%

%

tf

tC L K

tr

tC L K

V DD

GND

WR

C lo c k

ts u

th

V DD

50%

GND

Figure 1

Figure 2

tC S

CS

50%

tsu 1

th 1

W R ,R D

C lo c k

50%

V DD

GND

D ATA

V DD

GND

RD

50%

to d

V DD

GND

V DD

F ir s t C lo c k

L a s t C lo c k

GND

Figure 3

Figure 4

Rev. 1.60

4

August 19, 2015

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