Diodes AP386X Superior multi-touch capacitive touch screen controller Datasheet

Preliminary Datasheet
Superior Multi-touch Capacitive Touch Screen Controller
General Description
Features (Continued)
The AP386X is a low-cost high-resolution single chip
solution for APA (All point addressable) capacitive
touch screen. It is an 8-bit single cycle 8051
microcontroller with ICP Interface. The chip includes
12-bit successive approximation analog-to-digital
converters
with
an
I2C
interface
and
multiplexer-switcher
circuits
for
flexible
measurement of analog signal from APA panel. An
accurate switched-capacitor integrator is built-in and
it can auto calibrate the pixel parameters for a wide
range of capacitance on the touch screen (1pF to
32pF). This touch screen controller (TSC) with
CMOS integration circuit provides an ideal choice for
APA touch panel. The AP386X is specified over the
temperature range of -40°C to 85°C.
•
•
•
•
The AP386X is available in QFN-5×5-40 (for
AP3860) and QFN-6×6-48 (for AP3861) packages.
•
•
•
•
•
•
•
•
•
Single Cycle 8051 CPU Core, Maximum Operating Clock up to 28MHz from IOSC (Zero Wait
State)
4 to 28MHz Internal Oscillator (IOSC)
32k-byte Flash ROM
6k-byte Internal SRAM
Two 16-bit Timers T0/T1
Configurable I2C Slave Controller and SPI Slave
Controller Shared with the Same Ports

With Asynchronous I2C Slave Address
Detection Logic Design
4 General Purpose GPIO Pins
One External Interrupt Pin
ISP/IAP via I²C Port
Operation Temperature Range: -40°C to 85°C
Package Type Alternatives: QFN-5×5-40 and
QFN-6×6-48
RoHS Compliance
Operating Mode:
Mode
Power-down
Idle
Features
Mutual Capacitive Touch Sensing
Single Power Supply: 2.8V to 3.6V Operation
Voltage; LDO inside to Support 1.6V to 2.0V
Operation Voltage
Up to 17/23 Drive Lines and 10/12 Sense Lines
Charge Pump Support up to 6V, Doubling SNR
Internal Two-wire Serial Control Bus I2C
Single-end Integrator with Programmable Gain
Control
Multiplexed Analog Digitization with 12-bit
Resolution Scan SAR ADCs and Its Dedicated
2X to 8X Accumulator XSRAM Buffers
AP386X
Standard
Description
No scan with power-down mode
While only 8051 CPU core is idle,
all peripherals remain active
Higher scan rate when fingers are
on panel, IOSC can up to 4MHz
to 28MHz
Applications
•
•
•
QFN-5×5-40
Mobile Phones
Personal Digital Assistants
Smart Hand-held or Gaming Devices
QFN-6×6-48
Figure 1. Package Types of AP386X
Aug. 2013
Rev. 1. 0
BCD Semiconductor Manufacturing Limited
1
Preliminary Datasheet
Superior Multi-touch Capacitive Touch Screen Controller
AP386X
Pin Configuration
FN Package
(QFN-5×5-40)
D16
S9
S8
S7
S6
S5
S4
S3
S2
S1
Pin 1 Mark
40
39
38
37
36
35
34
33
32
31
D15
1
30
VDD3V
D14
2
29
S0
D13
3
28
INT/GPIO1
D12
4
27
WAKE/GPIO0
D11
5
26
RSTN
D10
6
25
MISO/GPIO2
D9
7
24
MOSI/SDA
D8
8
23
SCK/GPIO3
D7
9
22
SS/SCL
D6
10
21
TESTEN
16
17
D3
D2
D1
D0
VDDHV
18
19
20
VDD18
15
VSS
14
VDD3V
13
D4
11 12
D5
41
Figure 2. Pin Configuration of AP3860 (Top View)
Aug. 2013
Rev. 1. 0
BCD Semiconductor Manufacturing Limited
2
Preliminary Datasheet
Superior Multi-touch Capacitive Touch Screen Controller
AP386X
Pin Configuration (Continued)
D8
D7
D6
D5
D4
D3
D2
VDD3V
S5
VDDHV
S6
D0
S7
D1
S8
S1
S9
S2
S10
S3
S11
S4
D22
D9
FN Package
(QFN-6×6-48)
Figure 3. Pin Configuration of AP3861 (Top View)
Aug. 2013
Rev. 1. 0
BCD Semiconductor Manufacturing Limited
3
Preliminary Datasheet
Superior Multi-touch Capacitive Touch Screen Controller
AP386X
Pin Description
Pin Number
Pin
Name
Pin
Type
6 to 22
D16 to
D0
I/O, A
-
48, 1 to 5
D22 to
D17
I/O, A
17
23
VDDHV
O
18, 30
24, 35
VDD3V
P
19
25
VSS
P
20
26
VDD18
O
21
27
TESTEN
I
22
28
SS/SCL
I/O
23
29
SCK/
GPIO3
I/O
24
30
MOSI/
SDA
I/O
25
31
MISO/
GPIO2
I/O
QFN-5×5-40
AP3860
QFN-6×6-48
AP3861
40, 1 to 16
Aug. 2013
Pin Function
Driving Lines 16 to 0
These pins can also be configured as I/O
bi-directional ports for test
Driving Lines 22 to 17
These pins can also be configured as I/O
bi-directional ports for test
High Voltage. 6V
Charge pump high Voltage. This output pin can be
configured as VDD3V or 6V accordingly
Supply Voltage. 2.8V to 3.6V
A good decoupling capacitor between VDD3V and
VSS pins is critical for good performance
Ground Voltage. 0V
Internal Regulator Output. 1.6V to 2.0V
Typical decoupling capacitors of 0.1F and 10F
should be connected between VDD18 and VSS
Test Mode Enable High Active
This pin has an internal weakly pull low resistor
connected. If it is connected high, the chip enters into
Test Mode condition
SS/SCL
This pin can be configured as the SCL signal of the
I2C master or I2C slave controller. When I2C is
enabled, the pin is configured as an open-collector.
While in SPI mode, this pin is configured as the
slave chip select pin
Port 1.3 GPIO
8051 P1.3 GPIO. This pin can also be configured as
the serial clock from SPI master while SPI interface
is activated
SDA
This pin can be configured as the SDA signal of the
I2C master or I2C slave controller. In this operation
mode, this pin should also be configured as
open-collector. While SPI interface is selected, the
pin serves as the data port from SPI master to SPI
slave
Port 1.2 GPIO
8051 P1.2 GPIO. This pin can also be configured as
the output data pin from slave to master for SPI
interface
Rev. 1. 0
BCD Semiconductor Manufacturing Limited
4
Preliminary Datasheet
Superior Multi-touch Capacitive Touch Screen Controller
AP386X
Pin Description (Continued)
Pin Number
QFN-5×5-40
AP3860
QFN-6×6-48
AP3861
Pin
Name
Pin
Type
Pin Function
Reset Low Active
Typically connect a resistor to VDD3V and a
capacitor to VSS. Low asserted and threshold at
26
32
RSTN
I
0.5*VDD. When forced low, the chip enters into reset
condition. This pin should not be connected to any
level above VDD
Port 1.0 GPIO
WAKE/
I/O
27
33
8051 P1.0 GPIO. This pin can also be configured as
GPIO0
the wakeup pin from the host
Port 1.1 GPIO
INT/
8051
P1.1 GPIO. Open Drain output. This pin can
I/O
28
34
GPIO1
also be configured as the interrupt pin to notify the
host
Sensing Lines 0 to 9
29, 31 to 39
36 to 45
S0 to S9
I/O, A
These pins can also be configured as I/O
bi-directional ports for test
Sensing Lines 10 to 11
46, 47
S10, S11
I/O, A
These pins can also be configured as I/O
bi-directional ports for test
41
49
EP
Exposed Pad
“I/O” means input/output; “I” means input; “O” means Output; “P” means power; “A” means analog.
SCL and SDA Pin Description
Pull-up Enable
The pull-up enable for SCL and SDA is activated for AP386X, meaning that AP386X always has pull-up SCL
and SDA to VDD3V. During reset, SCL and SDA are as input pin. Moreover, if the pin connecting to the system
is floating, the internal pull-up will tie the pin to VDD3V (10k). After AP386X is reset, SCL and SDA are
input until its corresponding register is configured.
Mode Selection
SCL and SDA can be used in I2C and SPI mode. AP386X can enable I2C mode (SCL and SDA configured as
open drain pin) by register setting.
Wakeup
SCL and SDA can be used for wakeup input signals in different mode. While I2C mode is enabled, a START
protocol (SDA is low and SCL is high) on SCL and SDA is a wakeup signal to AP386X. While SPI mode is
enabled, an active low on the pin of SCL (serving as a slave select in SPI) is a wakeup signal to AP386X.
Moreover, a wakeup signal can be asserted by host from GPIO0.
INT/GPIO1
GPIO1 can be configured as open-drain or push-pull mode. Furthermore, GPIO1 pin has internal pull-up to
VDD3V (60k) or VDD18 (10k) based on different register definition.
Aug. 2013
Rev. 1. 0
BCD Semiconductor Manufacturing Limited
5
Preliminary Datasheet
Superior Multi-touch Capacitive Touch Screen Controller
AP386X
Functional Block Diagram
SWITCH MATRIX
Figure 4. Functional Block Diagram of AP386X
Aug. 2013
Rev. 1. 0
BCD Semiconductor Manufacturing Limited
6
Preliminary Datasheet
Superior Multi-touch Capacitive Touch Screen Controller
AP386X
Ordering Information
AP386
G1: Green
Circuit Type
Blank: Tray
TR: Tape & Reel
0: AP3860
1: AP3861
Package
Temperature Range
QFN-5x5-40
QFN-6x6-48
-40 to 85°C
Package
FN: QFN-5×5-40
/QFN-6×6-48
Part Number
Marking ID
Packing Type
AP3860FNTR-G1
3860FN
Tape & Reel
AP3861FN-G1
3861FN
Tray
AP3861FNTR-G1
3861FN
Tape & Reel
BCD Semiconductor's Pb-free products, as designated with "G1" in the part number, are RoHS compliant and
green.
AP386X Support 3” to 8” Touch Panel, Listed Below:
PN
TX/RX
Multi-touch
Package
Panel size
AP3860
17/10
10 points 100Hz
QFN-5x5-40
3” to 7”
AP3861
23/12
10 points 100Hz
QFN-6x6-48
4” to 8”
Aug. 2013
Rev. 1. 0
BCD Semiconductor Manufacturing Limited
7
Preliminary Datasheet
Superior Multi-touch Capacitive Touch Screen Controller
AP386X
Absolute Maximum Ratings (Note 1)
Parameter
Symbol
Value
Unit
VDD
0 to 4
V
Analog Input Voltage (Other pins)
-0.3 to VDD+0.3
V
Logic Input Voltage
-0.3 to VDD+0.3
V
JA
TBD
°C/W
TJ
100
°C
Operating Temperature
TOP
-40 to 85
°C
Storage Temperature
TSTG
-65 to 150
°C
ESD HBM
8000
V
Supply Voltage (Pin VDD3V)
Thermal Resistance
Junction to Ambient)
(Simulation,
Maximum Junction Temperature
ESD (Human Body Model)
Note 1: Stresses greater than those listed under “Absolute Maximum Ratings” may cause permanent damage to
the device. These are stress ratings only, and functional operation of the device at these or any other conditions
beyond those indicated under “Recommended Operating Conditions” is not implied. Exposure to “Absolute
Maximum Ratings” for extended periods may affect device reliability.
Recommended Operating Conditions
Parameter
Symbol
Min
Max
Unit
Supply Voltage (Pin VDD3V)
VDD
2.8
3.6
V
Operating Ambient Temperature
TA
-40
85
ºC
Aug. 2013
Rev. 1. 0
BCD Semiconductor Manufacturing Limited
8
Preliminary Datasheet
Superior Multi-touch Capacitive Touch Screen Controller
AP386X
Electrical Characteristics
TA=25°C, VDD=2.8V to 3.6V, I2C bus frequency=400kHz, 12-bit mode, unless otherwise noted.
Parameter
Symbol
Quiescent Current
VDD18 Output Voltage
VDD18
Charge Pump Voltage
Internal
Operating
Frequency
VDDHV
Conditions
Standard mode fOSC=4 to
28MHz
Power-down mode
Idle mode
Min
Typ
5
Max
Unit
mA
1
1.6
1.8
2.0
A
A
V
5.8
6
6.3
V
28
MHz
Max
Unit
12
Bits
Bits
LSB
LSB
±6
±4
LSB
LSB
VDD
V
60
Charge pump enable
fOSC
4
DA/AC Characteristics for AFE
Parameter
Symbol
ADC DC Accuracy
Resolution
No Missing Codes
Integral Linearity Error
INL
Differential
Linearity
Error
DNL
Offset Error
Gain Error
Analog Input
Full-scale Input Span
ADC Sampling Dynamics
Throughput Rate
Switched-capacitor Integrator
Output Voltage Range
Integrator Capacitor
CINT
Aug. 2013
Conditions
Standard modes
Standard modes
Min
11
Typ
12
±3
±1.5
0
500
0.3
VDD-0.3
40
Rev. 1. 0
ksps
V
pF
BCD Semiconductor Manufacturing Limited
9
Preliminary Datasheet
Superior Multi-touch Capacitive Touch Screen Controller
AP386X
Electrical Characteristics (Continued)
DA/AC Characteristics for 8051 CPU Core, Digital GPIO Pins, Digital Peripherals
Parameter
RSTN
Input
Threshold
Voltage
Symbol
Conditions
Min
Typ
Max
VRSTN_H
Low to high level
1.56
1.71
VRSTN_L
High to low level
1.16
1.30
Unit
V
Input High Voltage
VIH
0.7*VDD
VDD
V
Input Low Voltage
VIL
-0.3
0.5
V
Output High Voltage
VOH
VDD-0.6
Output Low Voltage
VOL
High Level Output Current
IOH
@VOH(Min)
1
mA
Low Level Output Current
IOL
@VOL(Max)
1
mA
Internal Pull-up Resistance
RPU
SCL, SDA, INT
10
Internal
Resistance
RPD
Pull-down
Output Rise Time
tRISE
Output Fall Time
tFALL
GPIO Output
Frequency
SCK Frequency
Operating
SCL Clock Frequency
Aug. 2013
V
0.4
Other Pins
34
74
29
86
CLOAD=20pF and
10% to 90%
CLOAD=20pF and
10% to 90%
CLOAD =20pF
0
fSCK
fSCLI2C
0
Rev. 1. 0
V
k
k
5
ns
5
ns
5
MHz
2
MHz
400
kHz
BCD Semiconductor Manufacturing Limited
10
Preliminary Datasheet
Superior Multi-touch Capacitive Touch Screen Controller
AP386X
Typical Application
AP3860
Figure 5. Typical Application Schematic of AP3860 (For QFN-5×5-40 Package)
AP3861
Figure 6. Typical Application Schematic of AP3861 (For QFN-6×6-48 Package)
Aug. 2013
Rev. 1. 0
BCD Semiconductor Manufacturing Limited
11
Preliminary Datasheet
Superior Multi-touch Capacitive Touch Screen Controller
AP386X
Mechanical Dimensions
QFN-5×5-40
Aug. 2013
Rev. 1. 0
Unit: mm(inch)
BCD Semiconductor Manufacturing Limited
12
Preliminary Datasheet
Superior Multi-touch Capacitive Touch Screen Controller
AP386X
Mechanical Dimensions (Continued)
QFN-6×6-48
Unit: mm(inch)
0.300(0. 012)
0.500(0.020)
5.900(0. 232)
6.100(0. 240)
J
N25
N37
5.900(0.232)
6.100(0.240)
K
Pin 1 Mark
N13
N48
N1
PIN # 1 IDENTIFICATION
0.400(0. 016)
BSC
See DETAIL A
DETAIL A
A
0.000(0. 000)
0.050(0. 002)
0.200(0.008)
REF
0.150(0. 006)
0.250(0. 010)
3
2
46
46
46
47
47
47
48
48
1
3
2
1
48
3
2
1
Pin 1 Options
J=K
Symbol
A
min(mm) max(mm) min(inch) max(inch) min(mm) max(mm) min(inch) max(inch)
Option1
Option2
Aug. 2013
4.400
4.150
4.600
4.450
0.173
0.163
0.181
0.175
Rev. 1. 0
0.700
.
0.800
0.800
0.028
0.031
0.900
0.031
0.035
BCD Semiconductor Manufacturing Limited
13
Preliminary Datasheet
Superior Multi-touch Capacitive Touch Screen Controller
AP386X
Mounting Pad Layout
QFN-5×5-40
Dimensions
Option1
Option2
Option3
Aug. 2013
X=Y
(mm)/(inch)
5.400/0.213
5.400/0.213
5.400/0.213
X1=Y2
(mm)/(inch)
0.250/0.010
0.250/0.010
0.250/0.010
Y1=X2
(mm)/(inch)
0.650/0.026
0.650/0.026
0.650/0.026
Rev. 1. 0
X3=Y3
(mm)/(inch)
3.500/0.138
3.600/0.142
3.800/0.150
E
(mm)/(inch)
0.400/0.016
0.400/0.016
0.400/0.016
BCD Semiconductor Manufacturing Limited
14
Preliminary Datasheet
Superior Multi-touch Capacitive Touch Screen Controller
AP386X
Mounting Pad Layout (Continued)
QFN-6×6-48
Dimensions
X=Y
(mm)/(inch)
X1=Y2
(mm)/(inch)
Y1=X2
(mm)/(inch)
X3=Y3
(mm)/(inch)
E
(mm)/(inch)
Value
6.300/0.248
0.250/0.010
0.600/0.024
4.600/0.181
0.400/0.016
Aug. 2013
Rev. 1. 0
BCD Semiconductor Manufacturing Limited
15
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