BT817Q-R datasheet(47/59 Pages) BRIDGETEK

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BT817/8 Advanced Embedded Video Engine Datasheet

Version 1.1

Document No.: BRT_000302 Clearance No.: BRT#154

Parameter

Description

Minimum

Typical

Maximum Units

Conditions

Rsw-on

X-,X+,Y- and Y+

Drive On

resistance

Ω

VCCIO=3.3V

Ω

VCCIO=1.8V

Rsw-off

X-,X+,Y- and Y+

Drive Off

resistance

MΩ

Rpu

Touch sense pull

up resistance

100

125

kΩ

Vth+

Touch Detection

rising-edge

threshold on XP

1.59

2.04

VCCIO=3.3V

0.58

0.68

VCCIO=1.8V

Vth-

Touch Detection

falling-edge

threshold on XP

1.23

1.55

VCCIO=3.3V

0.51

0.56

VCCIO=1.8V

X-axis and Y-axis

drive load

resistance

200

Ω

Table 6-8 Touch Sense Characteristics

6.4 AC Characteristics

6.4.1

System Clock and Reset

Parameter

Value

Units

Minimum

Typical

Maximum

Crystal

Frequency

12.000

MHz

X1/X2 Capacitance

Reset

Reset pulse on PD_N (active state)

Table 6-9 System Clock Characteristics

6.4.2

SPI Interface Timing

Figure 6-1 SPI Interface Timing

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