HT16L21 datasheet(8/36 Pages) HOLTEK

8 / 36 page

Rev. 1.00

November 16, 2011

HT16L21

A.C. Characteristics

Unless otherwise specified, VDD =1.8 to 5.5V; VSS = 0 V; Ta =-40~85°C

Symbol

Parameter

Test Condition

Min.

Typ.

Max.

Unit

VDD

Condition

fLCD1

LCD Frame Frequency

—

Ta=25°C,

VDD=3.3V

Frame frequency is set

to 64Hz

57.6

70.4

Frame frequency is set

to 85.3Hz

85.3

94.0

Frame frequency is set

to 128Hz

115.2

128

140.8

Frame frequency is set

to170.6Hz

152

170.6

188.0

fLCD2

—

Ta=-40~85°C,

VDD=2.5~5.5V

Frame frequency is set

to 64Hz

51.2

83.0

Frame frequency is set

to 85.3Hz

85.3

111

Frame frequency is set

to 128Hz

102.4

128

166

Frame frequency is set

to170.6Hz

136

170.6

222

fLCD3

—

Ta=-40~85°C

VDD=1.8~2.5V

Frame frequency is set

to 64Hz

45.0

—

Frame frequency is set

to 85.3Hz

59.0

—

85.3

Frame frequency is set

to 128Hz

90.0

—

128

Frame frequency is set

to170.6Hz

118.0

—

170.6

tSR

VDD Slew Rate

3.3

—

0.05

—

V/ms

5.0

tPOF

VDD Off Times

3.3

VDD drop down to 0.9V

—

5.0

tRSON

RSTB Input Time

3.3 When RSTB signal is externally input

from a microcontroller etc.

250

—

5.0

3.3 R=100kΩ and C=0.1μF

(see application circuit)

—

100

—

5.0

tRW

RSTB Pulse Width

3.3 When RSTB signal is externally input

from a microcontroller etc.

400

—

5.0

tRSOFF

Wait Time for Data

Transfers

3.3

2-wire I2C or 3-wire SPI interface

—

5.0

Note:fLCD=1/tLCD

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