Data Sheet

Copyright © Bridgetek Pte Ltd 51
BT81X (815/6) Advanced Embedded Video Engine Datasheet
Version 1.0
Document No.: BRT_000220 Clearance No.: BRT#126
Parameter
Description
Minimum
Typical
Maximum
Units
Conditions
pin
Vth-
Touch Detection
falling-edge
threshold on XP
pin
1.23
-
1.55
V
VCCIO=3.3V
0.51
-
0.56
V
VCCIO=1.8V
Rl
X-axis and Y-axis
drive load
resistance
200
-
-
Ω
Table 6-7 Touch Sense Characteristics
6.4 AC Characteristics
6.4.1 System Clock and Reset
Parameter
Value
Units
Minimum
Typical
Maximum
Internal Relaxation Clock
Trimmed frequency target
-
12
-
MHz
Trimmed frequency accuracy
-
±1.2
±6.0
%
Trimmed frequency variation over
temperature and voltage
-
-
±4.0
%
Crystal
Frequency
-
12.000
-
MHz
X1/X2 Capacitance
-
-
10
pF
External clock input
Frequency
-
12.000
-
MHz
Duty cycle
45
50
55
%
Input voltage on X1/CLK
-
3.3
-
V
Reset
Reset pulse on PD_N
5
ms
Table 6-8 System Clock Characteristics