ETC AP919

AP919
OTP Microcontroller with LCD Driver and
Digital Tuning System for Docking Application
AP919
OTP Microcontroller with LCD Driver
and
Digital Tuning System for
Docking Application
Datasheet
Revision 0.6
May 15, 2008
AP919
OTP Microcontroller with LCD Driver and
Digital Tuning System for Docking Application
Table of Contents
1.
OVERVIEW ................................................................................................................................................................ 1
2.
APPLICATIONS ........................................................................................................................................................ 1
2.1. TARGET APPLICATIONS ...................................................................................................................................................... 1
2.2. APPLICATION FEATURES..................................................................................................................................................... 1
2.2.1
CLOCK AND ALARM FEATURES....................................................................................................................................... 1
2.2.2
DOCKING CONTROL FEATURES ...................................................................................................................................... 1
2.2.3
RADIO FEATURES ........................................................................................................................................................... 1
2.2.4
OTHER SYSTEM FEATURES ............................................................................................................................................ 1
3.
ORDERING INFORMATION ..................................................................................................................................... 1
4.
PIN CONFIGURATION.............................................................................................................................................. 1
5.
BLOCK DIAGRAM .................................................................................................................................................... 2
6.
BUILT IN PERIPHERALS ......................................................................................................................................... 2
7.
PIN DESCRIPTION ................................................................................................................................................... 3
8.
ELECTRICAL SPECIFICATION ............................................................................................................................... 5
8.1.
8.2.
8.3.
8.4.
9.
ABSOLUTE MAXIMUM RATING............................................................................................................................................. 5
RECOMMENDED OPERATING CONDITION ........................................................................................................................... 5
LEAKAGE CURRENT AND CAPACITANCE............................................................................................................................. 5
DC ELECTRICAL CHARACTERISTICS .................................................................................................................................. 5
BONDING AND PACKAGE INFORMATION............................................................................................................ 6
9.1.
9.2.
REFERENCE COB LAYOUT INFORMATION ......................................................................................................................... 6
PACKAGE INFORMATION ..................................................................................................................................................... 7
10. SOLDERING INDICATION........................................................................................................................................ 8
1.
2.
3.
4.
REFLOW SOLDERING .......................................................................................................................................................... 8
W AVE SOLDERING .............................................................................................................................................................. 8
MANUAL SOLDERING .......................................................................................................................................................... 8
SUITABILITY OF SURFACE MOUNT IC PACKAGES FOR W AVE AND REFLOW SOLDERING METHODS ............................... 9
Revision 0.6
May 15, 2008
AP919
OTP Microcontroller with LCD Driver and
Digital Tuning System for Docking Application
1. OVERVIEW
2.2.2 Docking Control Features
The AP919 is a controller IC for docking application
with remote control function and LCD driver. It has a
built-in PLL controller for controlling external radio
tuner IC to form a complete digital tuning system (DTS).
AP919 also supports real time clock with 12/24 hour
display format and dual alarm clock timer. Built-in with
LCD driver and support for docking system of
prevalent music players and mobile phones, AP919 is
suitable for a wide range of audio applications that
have build-in clock alarm, radio and docking features.
• Docking control through front panel buttons or
remote controller
• PLAY, PAUSE, STOP, FAST FORWARD, FAST
BACKWARD, RANDOM, REPEAT functions
• Device charging through docking system
• Support Apple Authentication Coprocessor
2. APPLICATIONS
• Auto/Manual radio station scanning
• Programmable radio station memory ( independent
memory slots for FM and AM )
2.1. Target Applications
• Docking System
• Clock Radio
2.2.3 Radio Features
2.2.4 Other System Features
• Support 24 segment x 4 common or 6 common,
1/3 bias LCD display
• Automatic detection of AC power
• Low standby current
2.2. Application Features
2.2.1 Clock and Alarm Features
• 12/24 hour clock display mode selectable by user
• Dual alarm clocks
• User selectable alarm mode – wake-to-buzzer,
wake-to-radio or wake-to-docked_device
• Fixed snooze feature
• Programmable sleep timer
3. ORDERING INFORMATION
ORDERING NUMBER
AP919-DC-L
AP919-LQ-L
PINS
100
100
PACKAGE
Bare Dice
LQFP
P72
P73
P80
P81
P82
P83
/
/
/
/
/
/
SEG 19 76
SEG 20 77
SEG 21 78
SEG 22 79
SEG 23 80
SEG 24 81
VLCD 2 82
VLCD1 83
VLCD 84
ACIN 85
P120 / TX1 86
P121 / RX1 87
P122 / B OUT1 88
P123 89
W 3 90
PGM 91
A TON E 92
VDD 93
XO SCO 94
XOSCI 95
GND 96
TESTB0 / EM U_SCLR 97
TESTB1 / EMU_SDI 98
EM U_SC LK 99
EMU_SDO 100
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
P11 / BOUT1
P10 / TONE
P113 / I2C DAT2
P112 / I2C CLK 2
ADC IO 5
ADC IO 4
A DCIO3
A DCIO2
ADC IO1
ADC IO 0
W2
P133
P132 / TO NE
TESTB 3
TESTB 2
DTSPLLFLT
GND
IFIN
AMIN
FM IN
VDD
P103 / PW MO
P102 / BOUT0
P101 / RX0
P100 / TX0
77 P73 / SEG20
76 P72 / SEG19
81 P83 / SEG24
78 P80 / SEG21
79 P81 / SEG22
80 P82 / SEG23
84 VLCD
82 VLCD2
83 VLCD1
87 P121 / RX1
86 P120 / TX1
85 ACIN
88 P122 / BOUT1
91 PGM
90 W3
89 P123
93 VDD
92 ATONE
94 XOSCO
95 XOSCI
97 TESTB0 / EMU_SCLR
96 GND
98 TESTB1 / EMU_SDI
100 EMU_SDO
99 EMU_SCLK
75 P71 / SEG18
74 P70 / SEG17
73 P63 / SEG16
72 P62 / SEG15
71 P61 / SEG14
70 P60 / SEG13
69 P53 / SEG12
68 P52 / SEG11
67 P51 / SEG10
66 P50 / SEG9
65 GND
64 P43 / SEG8
63 P42 / SEG7
62 P41 / SEG6
61 P40 / SEG5
60 P33 / SEG4
59 P32 / SEG3
58 P31 / SEG2
57 P30 / SEG1
56 P23 / COM1
55 P22 / COM2
54 P21 / COM3
53 P20 / COM4
52 P13 / COM5 / RX1
51 P12 / COM6 / TX1
4. PIN CONFIGURATION
P90 / SPIDIO 1
P91 / SPICLK 2
P92 / SPIDI / AST0 3
P93 / AST1 4
RSTB 5
PWRDET 6
AVDD 7
PLLFLT 8
AGND 9
75 P71 / SEG18
74 P70 / SEG17
73 P63 / SEG16
72 P62 / SEG15
71 P61 / SEG14
70 P60 / SEG13
69 P53 / SEG12
68 P52 / SEG11
GND 10
OSCI 11
OSCO 12
VDD
VPP
P130
P131
WDTEN
W0
W1
P00 / I2CCLK0
P01 / I2CDAT0
67
66
AP919
65
64
63
62
61
60
13
Dice Form
14
15
16
17
18
19
P40 / SEG5
P33 / SEG4
P32 / SEG3
P31 / SEG2
P30 / SEG1
56 P23 / COM1
55 P22 / COM2
54 P21 / COM3
53 P20 / COM4
52 P13 / COM5 / RX1
51 P12 / COM6 / TX1
20
21
P02 / PWMO 22
P03 / REMO 23
49
50
48
P113 / I2CDAT2
P10 / TONE
47
P11 / BOUT1
46
ADCIO3
45
44
ADCIO2
ADCIO5
43
ADCIO1
ADCIO4
42
ADCIO0
P112 / I2CCLK2
40
41
35
DTSPLLFLT
39
34
GND
W2
33
IFIN
P133
32
38
31
FMIN
AMIN
37
30
VDD
36
29
P103 / PWMO
TESTB3
28
TESTB2
27
P132 / TONE
26
P100 / TX0
P101 / RX0
P102 / BOUT0
P90 / SPIDIO 1
P91 / SPICLK 2
P92 / SPIDI / AST0 3
P93 / AST1 4
RSTB 5
PWRDET 6
AVDD 7
PLLFLT 8
AGND 9
GND 10
OSCI 11
OSCO 12
VDD 13
VPP 14
P130 15
P131 16
WDTEN 17
W0 18
W1 19
P00 / I2CCLK0 20
P01 / I2CDAT0 21
P02 / PWMO 22
P03 / REMO 23
P110 / RCK 24
P111 / RCD 25
Revision 0.6
P50 / SEG9
GND
P43 / SEG8
P42 / SEG7
P41 / SEG6
59
58
57
P110 / RCK 24
P111 / RCD 25
Figure 1 100-Pin LQFP Package of AP919
P51 / SEG10
Figure 2 Dice Form of AP919
Page 1 of 10
May 15, 2008
AP919
OTP Microcontroller with LCD Driver and
Digital Tuning System for Docking Application
5. BLOCK DIAGRAM
GPIO & PIN MUX
LCD Display
GPIO & PIN MUX
The following diagram shows the system blocks embedded in AP919.
Figure 3 Internal Block Diagram of AP919
6. BUILT IN PERIPHERALS
• High performance 8 bit CPU
o Support C language programming
• 32 kbyte one time program ROM
• 1.5 kbyte data RAM
• Interrupt Controller
o 10 priority levels
• Watchdog reset
• Real time clock
• Embedded RC oscillator
• Programmable timer
o 2 units
• LCD driver
o 24 segment x 4 common or 6
common, 1/3 bias LCD display
• DTS PLL unit
• 6-bit ADC
o 6 channels
• AC line frequency detection unit
Revision 0.6
• External interrupt
o 4 channels
• IR remote control unit
• Buzzer unit
o output level control available
• Rotary type switch counter unit
• UART interface
o 2 units
• I2C interface
o 2 channels
• SPI interface
o 1 channel
• Selectable oscillator option
o XOSC : low speed 32.768kHz / 75kHz crystal
o OSC : high speed 3.6864 MHz crystal
o RCOSC: medium speed 1MHz
internal RC oscillator
Page 2 of 10
May 15, 2008
AP919
OTP Microcontroller with LCD Driver and
Digital Tuning System for Docking Application
7. PIN DESCRIPTION
Pin
Name
Alternative
Function
Type
Drive
(mA)
Pullup
/down
Reset
State
1
2
P90
P91
SPIDIO
SPICLK
IO,S
IO,S
2
2
PU
PU
Z
Z
3
P92
SPIDI / AST0
IO,S
2
PU
Z
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
P93
RSTB
PWRDET
AVDD
PLLFLT
AGND
GND
OSCI
OSCO
VDD
VPP
P130
P131
WDTEN
W0
W1
P00
P01
P02
P03
AST1
IO,S
I,S
IA
2
PU
U
Z
2
2
Z
Z
Z
Z
Z
Z
24
OA
I
O
I2CCLK0
I2CDAT0
PWMO
REMO
IO,S
IO,S
I,S
I,S
I,S
IO,S
IO,S
IO,S
IO,S
2
2
2
2
PU
PU
U
PU
PU
PU
PU
PU
PU
P110
RCK
IO,S
2
PU
Z
25
P111
RCD
IO,S
2
PU
Z
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
P100
P101
P102
P103
VDD
FMIN
AMIN
IFIN
GND
DTSPLLFLT
TESTB2
TESTB3
P132
P133
W2
ADCIO0
ADCIO1
ADCIO2
ADCIO3
ADCIO4
ADCIO5
P112
P113
P10
P11
TX0
RX0
BOUT0
PWMO
IO,S
IO,S
IO,S
IO,S
2
2
2
2
PU
PU
PU
PU
Z
Z
Z
Z
I2CCLK1
I2CDAT1
TONE
BOUT1
OA
I,S
I,S
IO,S
IO,S
I,S
IO,S
IO,S
IO,S
IO,S
IO,S
IO,S
IO,S
IO,S
IO,S
IO,S
51
P12
COM6 / TX1
52
P13
53
54
55
56
57
P20
P21
P22
P23
P30
Revision 0.6
IA
IA
IA
TONE
2
2
U
U
PU
PU
PU
Z
Z
2
2
2
2
2
2
2
2
2
2
PU
PU
PU
PU
Z
Z
Z
Z
Z
Z
Z
Z
Z
Z
IO,S,L
2
PU
Z
COM5 / RX1
IO,S,L
2
PU
Z
COM4
COM3
COM2
COM1
SEG1
IO,S,L
IO,S,L
IO,S,L
IO,S,L
IO,S,L
2
2
2
2
2
PU
PU
PU
PU
PU
Z
Z
Z
Z
Z
Page 3 of 10
Descriptions
General purpose IO port / SPI data IO
General purpose IO port / SPI clock IO
General purpose IO port / SPI data input / Autostrobe output 0
General purpose IO port / Auto-strobe output 1
Active low chip reset input
Low-voltage detect
Analog supply voltage
PLL filter
Analog ground
Ground
3.6864MHz oscillator input
3.6864MHz oscillator output
Power supply
Power supply
General purpose IO port pin
General purpose IO port pin
Watchdog enable ( active high)
MCU external interrupt input pin
MCU external interrupt input pin
General purpose IO port / I2C0 clock output
General purpose IO port / I2C0 data IO port
General purpose IO port / PWMO
General purpose IO port / Remote receiver input
General purpose IO port or rotary switch counter
input
General purpose IO port or rotary switch counter
input
General purpose IO port or UART0 TX output
General purpose IO port or UART0 RX input
General purpose IO port or UART0 clock output
General purpose IO port pin / PWM output
Power supply
FM input clock
AM input clock
IF input clock
ground
DTS PLL control voltage output
Active low chip test enable
Active low chip test enable
General purpose IO port pin / buzzer
General purpose IO port pin
MCU external interrupt input pin
ADC input channel 0 / General purpose IO port
ADC input channel 1 / General purpose IO port
ADC input channel 2 / General purpose IO port
ADC input channel 3 / General purpose IO port
ADC input channel 4 / General purpose IO port
ADC input channel 5 / General purpose IO port
General purpose IO port pin / I2C1 clock output
General purpose IO port pin / I2C1 data IO
General purpose IO port pin / buzzer output
General purpose IO port pin / UART1 clock *Note
General purpose IO port / LCD common 6 / UART1
TX *Note
General purpose IO port / LCD common 5 / UART1
RX *Note
General purpose IO port / LCD common 4
General purpose IO port / LCD common 3
General purpose IO port / LCD common 2
General purpose IO port / LCD common 1
General purpose IO port / LCD segment 1
May 15, 2008
AP919
OTP Microcontroller with LCD Driver and
Digital Tuning System for Docking Application
Pin
Name
Alternative
Function
Type
Drive
(mA)
Pullup
/down
Reset
State
58
59
60
61
62
63
64
65
P31
P32
P33
P40
P41
P42
P43
GND
SEG2
SEG3
SEG4
SEG5
SEG6
SEG7
SEG8
IO,S,L
IO,S,L
IO,S,L
IO,S,L
IO,S,L
IO,S,L
IO,S,L
2
2
2
2
2
2
2
PU
PU
PU
PU
PU
PU
PU
Z
Z
Z
Z
Z
Z
Z
66
P50
SEG9 / LCDD0
IO,S,L
2
PU
Z
67
P51
SEG10 / LCDD1
IO,S,L
2
PU
Z
68
P52
SEG11 / LCDD2
IO,S,L
2
PU
Z
69
P53
SEG12 / LCDD3
IO,S,L
2
PU
Z
70
P60
SEG13 / LCDD4
IO,S,L
2
PU
Z
71
P61
SEG14 / LCDD5
IO,S,L
2
PU
Z
72
P62
SEG15 / LCDD6
IO,S,L
2
PU
Z
73
P63
SEG16 / LCDD7
IO,S,L
2
PU
Z
74
P70
SEG17 /
LCDWRB
IO,S,L
2
PU
Z
75
P71
SEG18 / LCDRDB
IO,S,L
2
PU
Z
76
P72
SEG19 / LCDA0
IO,S,L
2
PU
Z
77
P73
SEG20 / LCDCSB
IO,S,L
2
PU
Z
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
P80
P81
P82
P83
VLCD2
VLCD1
VLCD
ACIN
P120
P121
P122
P123
W3
TEST4
ATONE
VDD
XOSCO
XOSCI
GND
TESTB0
TESTB1
TEST5
TESTOUT1
SEG21
SEG22
SEG23
SEG24
IO,S,L
IO,S,L
IO,S,L
IO,S,L
2
2
2
2
PU
PU
PU
PU
Z
Z
Z
Z
I
O
IO
IA
OA
- Input pin
- Output pin
- Bidirectional pin
- Analog input pin
- Analog output pin
TX1
RX1
BOUT1
I,S
IO,S,L
IO,S,L
IO,S,L
IO,S,L
I,S
I,S
OA
2
2
2
2
U
PU
PU
PU
PU
PU
D
Z
Z
Z
Z
O
I
I,S
I,S
I,S
O
U
U
D
2
0
S
(P)U
(P)D
L
0,1,Z
Descriptions
General purpose IO port / LCD segment 2
General purpose IO port / LCD segment 3
General purpose IO port / LCD segment 4
General purpose IO port / LCD segment 5
General purpose IO port / LCD segment 6
General purpose IO port / LCD segment 7
General purpose IO port / LCD segment 8
Ground
General purpose IO port / LCD segment 9/ 8-bit MPU
interface
General purpose IO port / LCD segment 10 / 8-bit
MPU interface
General purpose IO port / LCD segment 11 / 8-bit
MPU interface
General purpose IO port / LCD segment 12 / 8-bit
MPU interface
General purpose IO port / LCD segment 13 / 8-bit
MPU interface
General purpose IO port / LCD segment 14 / 8-bit
MPU interface
General purpose IO port / LCD segment 15 / 8-bit
MPU interface
General purpose IO port / LCD segment 16 / 8-bit
MPU interface
General purpose IO port / LCD segment 17 / 8-bit
MPU interface
General purpose IO port / LCD segment 18 / 8-bit
MPU interface
General purpose IO port / LCD segment 19 / 8-bit
MPU interface
General purpose IO port / LCD segment 20 / 8-bit
MPU interface
General purpose IO port / LCD segment 21
General purpose IO port / LCD segment 22
General purpose IO port / LCD segment 23
General purpose IO port / LCD segment 24
1/3 x VLCD voltage
2/3 x VLCD voltage
LCD driver supply voltage
AC detection input
General purpose IO port / UART1 TX *Note
General purpose IO port / UART1 RX *Note
General purpose IO port / UART1 clock output *Note
General purpose IO port
MCU external interrupt input pin
Active high chip test enable
Buzzer output with level control
Power supply
32.768kHz / 75kHz oscillator output
32.768kHz / 75kHz oscillator input
Ground
Active low chip test enable
Active low chip test enable
Active high chip test enable
Chip test output
- CMOS Schmitt Trigger
- (Programmable) Pull-up
- (Programmable) Pull-down
- LCD Pad
- Logic state 0, Logic state 1,High impedance
*Note:
Depending on the UART1 control register’s content, either P12[2:0] or P1[3:1] can be used as the UART1 ports.
Revision 0.6
Page 4 of 10
May 15, 2008
AP919
OTP Microcontroller with LCD Driver and
Digital Tuning System for Docking Application
8. ELECTRICAL SPECIFICATION
8.1. Absolute Maximum Rating
Item
Power Supply Voltage (logic)
Power Supply Voltage (analog)
Power Supply Voltage (LCD)
Input Voltage
Power Dissipation (Ta = 70°C)
Storage Temperature
Operating Temperature
Symbol
Rating
Unit
VDD
AVDD
VLCD/VLCD1/VLCD2
VIN
Pd
TSTG
Topr
-0.5 to 6.0
-0.5 to 6.0
-0.5 to 6.0
-0.5 to VDD+0.5
TBD
-20 to 125
0 to 70
V
V
V
V
mW
°C
°C
8.2. Recommended Operating Condition
Item
Power Supply Voltage (logic)
Power Supply Voltage (analog)
Power Supply Voltage (LCD)
Input Voltage (digital)
Input Voltage (analog)
Operating Temperature
Symbol
Min.
VDD
AVDD
VLCD
VLCD1
VLCD2
VIN
VIN
TOPR
3.0
3.0
VLCD2
0
0
0
0
Typ.
Max.
Unit
-
3.6
3.6
VDD
VLCD
VLCD1
VDD
VDD
70
V
V
V
V
V
°C
8.3. Leakage Current and Capacitance
Symbol
IIN
IOZ
CIN
CIN
CBID
Parameter
Condition
Input current
Tri-state leakage current
Input capacitance *Note1
Output capacitance *Note1
Bidirectional buffer capacitance *Note1
No pull-up or pull-down
Min.
Typ.
Max.
Unit
-10
-10
±1
±1
3.0
3.0
3.0
10
10
µA
µA
pF
pF
pF
*Note1: capacitance value are specified without the package
8.4. DC Electrical Characteristics
(VDD=3.3V±10%, AVDD=3.3V±10%, operating temperature = 0°C - 70°C unless specified otherwise)
Symbol Parameter
Condition
Min.
Typ.
Max.
Unit
VDD
AVDD
VIH
VIL
RPU
RPD
VINA
IOL
IOH
Idd_opr
Idd_idle
Supply Voltage (logic)
Supply Voltage (analog)
Input high voltage
Input low voltage
Pull-up resistance
Pull-down resistance
FMIN,AMIN,IFIN input voltage
Output low current
Output high current
Core operating current
Clock Mode current
Core operating mode
Clock mode
Core operating mode
Clock mode
VIN = 0V
VIN = VDD
VOL = 0.4V
VOH = VDD-0.4V
*Note2
VDD=3.3V, T=25°C *Note3
3.0
2.4
3.0
2.4
0.7*VDD
30k
30k
150
-
45k
45k
3.6
3.6
3.6
3.6
0.3*VDD
75k
75k
2.8
2.5
7
80
10
100
-
V
V
V
V
Ω
Ω
mVpp
mA
mA
mA
µA
*Note2: LCD is ON. The CPU clock source is from the 3.6864 MHz oscillator pads. No active load is being
driven. All inputs = 0V or VDD.
*Note3: LCD is ON. The CPU clock source is from the 75 kHz oscillator pads. No active load is being driven. All
inputs = 0V or VDD.
Revision 0.6
Page 5 of 10
May 15, 2008
AP919
OTP Microcontroller with LCD Driver and
Digital Tuning System for Docking Application
9. BONDING AND PACKAGE INFORMATION
9.1. Reference COB Layout Information
Libraries of reference COB PCB layout and dice connection layout are available upon request.
Revision 0.6
Page 6 of 10
May 15, 2008
AP919
OTP Microcontroller with LCD Driver and
Digital Tuning System for Docking Application
9.2. Package Information
Revision 0.6
Page 7 of 10
May 15, 2008
AP919
OTP Microcontroller with LCD Driver and
Digital Tuning System for Docking Application
10. SOLDERING INDICATION
This section gives a very brief insight to a complex technology. There is no soldering method that is ideal for all
surface mount IC packages. Wave soldering can still be used for certain surface mount ICs, but it is not suitable for
fine pitch SMDs. In these situations reflow soldering is recommended.
1. Reflow Soldering
Reflow soldering requires solder paste (a suspension of fine solder particles, flux and binding agent) to be applied
to the printed-circuit board by screen printing, stenciling or pressure-syringe dispensing before package placement.
Several methods exist for reflowing; for example, convection or convection/infrared heating in a conveyor type oven.
Throughput times (preheating, soldering and cooling) vary between 100 and 200 seconds depending on heating
method.
Typical reflow peak temperatures range from 215 to 250°C. The top-surface temperature of the packages should
preferable be kept below 220 °C for thick/large packages, and below 235 °C for small/thin packages.
2. Wave Soldering
Conventional single wave soldering is not recommended for surface mount devices (SMDs) or printed-circuit boards
with a high component density, as solder bridging and non-wetting can present major problems.
To overcome these problems the double-wave soldering method was specifically developed.
If wave soldering is used, the following conditions must be observed for optimal results:
Use a double-wave soldering method comprising a turbulent wave with high upward pressure followed by a smooth
laminar wave.
For packages with leads on two sides and a pitch:
– larger than or equal to 1.27 mm, the footprint longitudinal axis is preferred to be parallel to the transport direction
of the printed-circuit board;
– smaller than 1.27 mm, the footprint longitudinal axis must be parallel to the transport direction of the printedcircuit board.
The footprint must incorporate solder thieves at the downstream end.
For packages with leads on four sides, the footprint must be placed at a 45angle to the transport direction of the
printed-circuit board. The footprint must incorporate solder thieves downstream and at the side corners.
During placement and before soldering, the package must be fixed with a droplet of adhesive. The adhesive can be
applied by screen printing, pin transfer or syringe dispensing. The package can be soldered after the adhesive is cured.
Typical dwell time is 4 seconds at 250°C.
A mildly-activated flux will eliminate the need for removal of corrosive residues in most applications.
3. Manual Soldering
Fix the component by first soldering two diagonally-opposite end leads. Use a low voltage (24 V or less) soldering iron
applied to the flat part of the lead. Contact time must be limited to 10 seconds at up to 300 °C.
When using a dedicated tool, all other leads can be soldered in one operation within 2 to 5 seconds between 270 and
320 °C.
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AP919
OTP Microcontroller with LCD Driver and
Digital Tuning System for Docking Application
4. Suitability of Surface Mount IC Packages for Wave and Reflow Soldering Methods
Package
BGA, HBGA, LFBGA, SQFP, TFBGA
HBCC, HLQFP, HSQFP, HSOP, HTQFP, HTSSOP, HVQFN, SMS
PLCC (3), SO, SOJ
LQFP, QFP, TQFP
SSOP, TSSOP, VSO
Soldering Method
Wave
Reflow (1)
(2)
Not suitable
Suitable
Not suitable
Suitable
Suitable
Suitable
Not recommended (3)(4)
Suitable
Not recommended (5)
Suitable
Notes
1. All surface mount (SMD) packages are moisture sensitive. Depending upon the moisture content, the maximum
temperature (with respect to time) and body size of the package, there is a risk that internal or external package cracks
may occur due to vaporization of the moisture in them (the so called popcorn effect).
2. These packages are not suitable for wave soldering as a solder joint between the printed-circuit board and heatsink (at
bottom version) can not be achieved, and as solder may stick to the heatsink (on top version).
3. If wave soldering is considered, the package must be placed at a 45angle to the solder wave direction. The package
footprint must incorporate solder thieves downstream and at the side corners.
4. Wave soldering is only suitable for LQFP, TQFP and QFP packages with a pitch equal to or larger than 0.8 mm; it is
definitely not suitable for packages with a pitch equal to or smaller than 0.65 mm.
5. Wave soldering is only suitable for SSOP and TSSOP packages with a pitch equal to or larger than 0.65 mm; it is
definitely not suitable for packages with a pitch equal to or smaller than 0.5 mm.
Revision 0.6
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May 15, 2008
AP919
OTP Microcontroller with LCD Driver and
Digital Tuning System for Docking Application
Valence Semiconductor Design Limited
Unit 2001, 20/F, APEC Plaza,
49 Hoi Yuen Road, Kwun Tong, Hong Kong
Tel: (852) 2797 3288
Fax: (852) 2776 7770
Email: [email protected]
Website: http://www.valencetech.com
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Revision 0.6
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May 15, 2008