• 16-Mbit or 32-Mbit external Synchronous DRAM
(SDRAM) for MPEG audio and video decoding and
graphics data storage
• Single or double external SDRAM organized as
1M×16 or 2 × 1M×16 (two independent 16-bit data
bus) interfacing at 81 MHz. Due to efficient memory use
in MPEG decoding, more than 1 Mbit is available for
graphics in the single SDRAM configuration whereas
17 Mbits are available in the double SDRAM
configuration.
• All basic operations of the AVGD decoder are possible
in both 16- and 32-Mbit configuration; enhanced
performance is achieved by the use of 32-Mbit external
SDRAM
• Targeted to BSkyB 3.0 and Canal+ basic box and web
box specifications
• Fast 16-bit data + 22-bit address synchronous or
asynchronous interface with external controller at up to
40.5 MHz
• Dedicated input for compressed audio and video in
Packetized Elementary Stream (PES) or Elementary
Stream (ES) in byte wide or bit serial format.
Accompanyingstrobesignalsdistinguishbetweenaudio
and video data. Transport stream error correction
available.
• Audio and/or video can also be input via the CPU
interface in PES or ES in 8 or 16-bit parallel format
• Single 27 or 40.5 MHz external clock for time base
reference and internal processing. Internal system time
base at 90 kHz can be synchronized via CPU port.
All required decoding and presentation clocks are
generated internally.
• Flexible memory allocation under control of the external
CPU enables optimized partitioning of memory for
different tasks
• Optimum compatibility with T-MIPS controller family
(SAA7214, SAA7219 and successors)
• Boundary scan testing implemented
• External SDRAM self test
• Supply voltage: 3.3 V; package: SQFP208.
CPU related features
• 16-bit data, 22-bit address, Chip Select, Data Strobe
and DaTa ACKnowledge external control protocol
• Fast 16-bit data plus 22-bit address synchronous
interface with the SAA7214, SAA7219 family at up to
40.5 MHz
• Asynchronous interface possible with external
microcontroller
• Support of fast DMA transfer
• Flexible bidirectional interface to external SDRAM
• High speed/low latency interface with second graphics
SDRAM
• Byte access to the full SDRAM in the upper 16-Mbit
address range
• Independent memory mapping of SDRAM and control
registers
• Two programmable independent interrupt lines
available
• Supports Motorola 68xxx interfaces as well as LSI
L64108 interface.
MPEG-2 system features
• Parsing of MPEG-2 PES and MPEG-1 packet streams
• Double system time clock counters
• Stand-alone or supervised audio/video synchronization
• Processing of errors flagged by channel decoding
section.
MPEG-2 video features
• Decodingof MPEG-2 video upto main level, main profile
pictures.Pictureformat720 × 576at 50 Hz or 720 × 480
at 60 Hz.
• Support of constant and variable bit rates up to
15 Mbits/s for the elementary stream
• Horizontal and vertical pan and scan allows the
extraction of a window from the coded picture
• Flexible horizontal scaling from 0.5 up to 4 allows easy
aspect ratio conversion including support for 2.21 : 1
aspect ratio movies; in case of shrinking an anti-aliasing
pre-filter is applied
• Vertical scaling with fixed factors 0.5, 0.75, 1 or 2;
factor 0.5 realizes picture shrink. Factor 2 can be used
for up-conversion of pictures with 288 (240) lines or
less; factor 0.75 is used for letterbox presentation.
• Horizontaland vertical scaling can be combinedtoscale
pictures to1⁄4of their original size, thus freeing up
screen space for graphic applications like electronic
program guides
• Non full screen MPEG pictures can be displayed in a
box of which position and background colour are
adjustable by the external microcontroller; structured
background is available as part of the graphic features
• Nominal video input buffer size for MP at ML 2.7-Mbit
• Video output may be slaved to internally (master)
generated or externally (slave) supplied
HV synchronization signals or CCIR-656 contained
synchronization signals. The position of active video is
programmable. Display phase is not affected by MPEG
timebase changes.
• Decoding and presentation can be independently
handled under CPU control
• Various trick modes under control of external
microcontroller:
– Freeze field/frame on I- or P-frames; restart on
I-picture
– Freeze field on B-frames; restart at any moment
– Scanning and decoding of I- or I- and P-frames in a
IBP sequence
– Single step mode
– Repeat/skip field for time base correction
– Repeat/skip frame for display parity integrity.
• Independentchannelvolumecontrolandprogrammable
inter-channel crosstalk through a baseband audio
processing unit
• MPEG audio decoder
– Decoding of 2 channels, layer I and IIMPEG-1 audio
and low sampling frequency extension of MPEG-2
– Supports for mono, stereo, intensity stereo and dual
channel mode
– CRC error detection with automatic mute
– Constant and variable bit rates up to 448 kbit/s
– Selectable output channel in dual channel mode
– Storage of last 54 bytes in ancillary data field
– Dynamic range control at output.
• Muting possibility via external controller; automatic
muting in case of errors
• Generation of ‘beeps’ with programmable tone height,
duration and amplitude
• Linear PCM decoding
– Support for up to 8 channels linear PCM elementary
audio streams
– Supports for 8, 16, 20 and 24 bit/sample
– Supports for bit rates up to 6.144 Mbit/s
– 96 kHz LPCM samples will be mapped to a 48 kHz
multi-channel format
– Volume control for linear PCM samples in three
steps: −6, −12 and −18 dB.
• Burst-formatting for interconnection with an external
multi-channel decoder
– AC-3 elementary streams (IEC1937)
– MPEG-2 multi-channel streams in ES or PES format
– Output via the digital audio output or the IEC 958
output.
• Output stage
– Global control for volume and balance
– Serial multi-channel digital audio output with 16, 18,
20 or 22 bits per sample, compatible either to I2Sor
Japanese formats; output can be set to high
impedance mode via the external controller
– IEC958 (Serial SPDIF) audio output; output can be
set to high impedance mode
– Clock output 256 or 384 × fs for external
DA converter or clock input; output can be set to high
impedance mode.
• Audio FIFO in external SDRAM; programmable buffer
size, at least 64 kbit is available
2 nearly identical graphics planes: the first graphics plane
commonly called the background plane and the second
graphics plane commonly called foreground plane.
The following features apply for both planes.
• Graphics is presented in boxes independent of video
format
• Boxes can be up to full screen allowing double buffer
display mechanism
• Two independent data paths with RGB 4 :4:4 and
YCbCr 4 : 2 : 2 formats available with independent
mixing
• RGB path transparent to YCbCr format
• Conversion matrices available to allow any format on
any different data path (RGB or YCbCr)
• Screen arrangement of boxes is determined by display
list mechanism which allows for multiple boxes,
background loading, fast switching, scrolling,
overlapping and fading of regions
• Real-time anti-flickering performed in hardware;
programmable hardware available for off-line
anti-flickering
• Hard edged or soft edged wiping of regions available
• Support of 2, 4, 8, 16 bit/pixel infixed bit maps format or
coded in accordance to the DVB variable/run length
standard for region based graphics
• Chrominance down-sampling filter switched per region
• Display colours are obtained via colour look up tablesor
directly from bitmap; CLUT output can be YCbCrT at
8-bit for each signal component thus enabling 16 M
different colours and 6-bit for T which gives 64 mixing
levels with video; CLUT output can also be RGBT with
same resolutions; non linear processing available by
means of LUTs
• Map table mechanism to specify a sub set of entries if
the CLUT is larger than required by the coded bit
pattern; supported map tables are 16 to 256, 4 to 256
and4to16
• Up to 4 graphics boxes may overlap vertically even
inside one graphics layer thanks to the use of flexible
chained descriptors
• Graphics mechanism can be used for signal generation
in the vertical blanking interval; useful for teletext, wide
screen signalling, closed caption etc.
In addition to the previous listed features, the second
graphics plane sustains:
• Teletext insertion with automatic teletext data retrieving
from the external SDRAM.
Data manipulation unit
• Powerful 3D block move with different patterns for
source and destination area
• Dedicated events for video synchronization
• Scaling, format conversion and bit manipulation from a
The SAA7215 integrated MPEG AVGD decoder is aimed
at being used in MPEG digital TV applications. This
decoder is primarily designed to be connected to a
SAA7214 transport stream descrambler/demultiplexer/
microcontroller by means of glueless interfaces even
though connections to other market demultiplexers and/or
microcontrollers are possible. Compatibility is also
targeted with the SAA7219 and with the successor of the
T-MIPS family.
The SAA7215 can be used in any system where high-end
GENERAL DESCRIPTION
The SAA7215HS, SAA7216HS, SAA7221H is a MPEG-2
sourcedecoderwhichcombinesaudiodecodingandvideo
decoding. Additionally to these basic MPEG functions it
also provides means for enhanced graphics, background
display and/or on-screen display as well as encoding of
output video. Due to an optimized architecture for audio
and video decoding, maximum capacity in external
memory and processing power from the external CPU is
available for graphics support.
Possible options are indicated in Table 1.
graphics are needed (associated SDRAM can be
extended to 32-Mbit) as well as in low cost systems (all
functions can be enabled with only 16-Mbit of associated
SDRAM).
DATA(4)2I/OCPU data input or output (bit 4); note 2
DATA(5)3I/OCPU data input or output (bit 5); note 2
DATA(64I/OCPU data input or output (bit 6); note 2
DATA(7)5I/OCPU data input or output (bit 7); note 2
DATA(8)6I/OCPU data input or output (bit 8); note 2
DATA(9)7I/OCPU data input or output (bit 9); note 2
V
DD
8Ssupply voltage for pad ring
DATA(10)9I/OCPU data input or output (bit 10); note 2
DATA(11)10I/OCPU data input or output (bit 11); note 2
DATA(12)11I/OCPU data input or output (bit 12); note 2
DATA(13)12I/OCPU data input or output (bit 13); note 2
DATA(14)13I/OCPU data input or output (bit 14); note 2
DATA(15)14I/OCPU data input or output (bit 15); note 2
V
22Ssupply voltage for pad ring
SDRAM_ADDR1(6)23OSDRAM address 1 output (bit 6)
SDRAM_ADDR1(10)24OSDRAM address 1 output (bit 10)
SDRAM_ADDR1(7)25OSDRAM address 1 output (bit 7)
V
SS(CO)
V
DD(CO)
26Sground for core logic
27Ssupply voltage for digital core logic
SDRAM_ADDR1(11)28OSDRAM address 1 output (bit 11)
SDRAM_ADDR1(9)29OSDRAM address 1 output (bit 9)
SDRAM_ADDR1(8)30OSDRAM address 1 output (bit 8)
V
SS
31Sground for pad ring
SDRAM_UDQ132OSDRAM write mask 1 output
SDRAM_RAS133OSDRAM row address strobe1 output
SDRAM_CAS134OSDRAM column address 1 output
SDRAM_WE135OSDRAM write enable 1 output
V
DD
36Ssupply voltage for pad ring
SDRAM_DATA1(8)37I/OSDRAM data 1 input or output (bit 8)
SDRAM_DATA1(7)38I/OSDRAM data 1 input or output (bit 7)
SDRAM_DATA1(9)39I/OSDRAM data 1 input or output (bit 9)
SDRAM_DATA1(6)40I/OSDRAM data 1 input or output (bit 6)
SDRAM_DATA1(10)41I/OSDRAM data 1 input or output (bit 10)
SDRAM_DATA11(5)42I/OSDRAM data 1 input or output (bit 5)
V
SS
43Sground for pad ring
SDRAM_DATA1(11)44I/OSDRAM data 1 input or output (bit 11)
SDRAM_DATA1(4)45I/OSDRAM data 1 input or output (bit 4)
SDRAM_DATA1(12)46I/OSDRAM data 1 input or output (bit 12)
SDRAM_DATA1(3)47I/OSDRAM data 1 input or output (bit 3)
SDRAM_DATA1(13)48I/OSDRAM data 1 input or output (bit 13)
SDRAM_DATA1(2)49I/OSDRAM data 1 input or output (bit 2)
V
DD
50Ssupply voltage for pad ring
SDRAM_DATA1(14)51I/OSDRAM data 1 input or output (bit 14)
SDRAM_DATA1(1)52I/OSDRAM data 1 input or output (bit 1)
SDRAM_DATA1(15)53I/OSDRAM data 1 input or output (bit 15)
SDRAM_DATA1(0)54I/OSDRAM data 1 input or output (bit 0)
READ_OUT155Oread command 1 output
READ_IN156Iread command 1 input
V
SS
57Sground for pad ring
CP81MEXT58I81 MHz SDRAM clock memory input
CP81M59O81 MHz SDRAM clock return path output
V
DD
60Ssupply voltage for pad ring
READ_IN261Iread command 2 input
READ_OUT262Oread command 2 output
SDRAM_DATA2(0)63I/OSDRAM data 2 input or output (bit 0)
SDRAM_DATA2(15)64I/OSDRAM data 2 input or output (bit 15)
SDRAM_DATA2(1)65I/OSDRAM data 2 input or output (bit 1)
SDRAM_DATA2(14)66I/OSDRAM data 2 input or output (bit 14)
V
SS
67Sground for pad ring
SDRAM_DATA2(2)68I/OSDRAM data 2 input or output (bit 2)
SDRAM_DATA2(13)69I/OSDRAM data 2 input or output (bit 13)
SDRAM_DATA2(3)70I/OSDRAM data 2 input or output (bit 3)
SDRAM_DATA2(12)71I/OSDRAM data 2 input or output (bit 12)
SDRAM_DATA2(4)72I/OSDRAM data 2 input or output (bit 4)
SDRAM_DATA2(11)73I/OSDRAM data 2 input or output (bit 11)
V
DD
74Ssupply voltage for pad ring
SDRAM_DATA2(5)75I/OSDRAM data 2 input or output (bit 5)
SDRAM_DATA2(10)76I/OSDRAM data 2 input or output (bit 10)
SDRAM_DATA2(6)77I/OSDRAM data 2 input or output (bit 6)
V
SDRAM_DATA2(9)80I/OSDRAM data 2 input or output (bit 9)
SDRAM_DATA2(7)81I/OSDRAM data 2 input or output (bit 7)
SDRAM_DATA2(8)82I/OSDRAM data 2 input or output (bit 8)
V
SS
83Sground for pad ring
SDRAM_WE284OSDRAM write enable 2 output
SDRAM_CAS285OSDRAM column address 2 output
SDRAM_RAS286OSDRAM row address strobe2 output
SDRAM_UDQ2(0)87OSDRAM write mask 2 (0) output
SDRAM_UDQ2(1)88OSDRAM write mask 2 (1) output
V
DD
89Ssupply voltage for pad ring
SDRAM_ADDR2(8)90OSDRAM address 2 output (bit 8)
SDRAM_ADDR2(9)91OSDRAM address 2 output (bit 9)
SDRAM_ADDR2(11)92OSDRAM address 2 output (bit 11)
SDRAM_ADDR2(7)93OSDRAM address 2 output (bit 7)
SDRAM_ADDR2(10)94OSDRAM address 2 output (bit 10)
SDRAM_ADDR2(6)95OSDRAM address 2 output (bit 6)
V
103Ssupply voltage for pad ring
TDI104Iboundary scan test data input; note 2
TDO105O/Zboundary scan test data output; note 2
TMS106Iboundary scan test mode select input; note 2
TRST107Iboundary scan test data input; note 2
TCK108Iboundary scan test clock input
V
DD(AN)
109S3.3 V supply for analog blocks(PLL)
IDUMP2110−analog sink2
B111−analog video (blue)
G112−analog video (green)
AV
DD3
113Sanalog supply 3
R114−analog video (red)
AV
DD2
115Sanalog supply 2
Y/CVBS116−analog luminance/analog composite video
C/CVBS117−analog chrominance/analog composite video
IDUMP1118−analog sink1
AV
GRPH123O/Zindicator for graphics information output; note 2
VS124I/Overtical synchronization input or output; note 2
HS125I/Ohorizontal synchronization input or output; note 2
CP27126O27 MHz video presentation clock output; note 2
V
DD
127Ssupply voltage for pad ring
YUV(0)128I/OYUV video input or output (bit 0);at 27 MHz; note 2
V
SS(CO)
V
DD(CO)
129Sground for core logic
130Ssupply voltage for digital core logic
YUV(1)131I/OYUV video input or output (bit 1); at 27 MHz; note 2
YUV(2)132I/OYUV video input or output (bit 2); at 27 MHz; note 2
YUV(3)133I/OYUV video input or output (bit 3); at 27 MHz; note 2
YUV(4)134I/OYUV video input or output (bit 4); at 27 MHz; note 2
YUV(5)135I/OYUV video input or output (bit 5); at 27 MHz; note 2
YUV(6)136I/OYUV video input or output (bit 6); at 27 MHz; note 2
YUV(7)137I/OYUV video input or output (bit 7); at 27 MHz; note 2
V
SS
138Sground for pad ring
SPDIF139O/Zdigital audio output; note 2
WS140O/Zword select output; note 2
WB141O/Zword begin output; note 2
SD142O/Zserial audio data output; note 2
SCK143O/Zserial audio clock output; note 2
FSCLK144I/O256 or 384 x f
clock input or output;
s
RESET145Ihard reset input; note 2
TTX146Iteletext data input; note 2
TTXRQ/CPU_SEL(1)147I/Oteletext data request or CPU data interface selection (1); note 2; note 3
V
DD
148Ssupply voltage for pad ring
IRQ(1)149O/Zindividually maskable interrupt (1) output; note 2
IRQ(0)150O/Zindividually maskable interrupt (0) output; note 2
V_REQ151O/Zvideo data request output; note 2
A_REQ152O/Zaudio data request output; note 2
AUDDEN153Ibyte synchronisation of serial audio input A_DATA; note 2
A_DATA154IMPEG audio stream serial port input; note 2
AV_DATA(0)155IMPEG stream port input (bit 0); note 2
AV_DATA(1)156IMPEG stream port input (bit 1); note 2
AV_DATA(2)157IMPEG stream port input (bit 2); note 2
AV_DATA(3)158IMPEG stream port input (bit 3); note 2
AV_DATA(4)159IMPEG stream port input (bit 4); note 2
AV_DATA(5)160IMPEG stream port input (bit 5); note 2
AV_DATA(6)161IMPEG stream port input (bit 6); note 2
AV_DATA(7)162IMPEG stream port input (bit 7); note 2
ERROR163Iflag for bitstream error; note 2
A_STROBE164Iaudio data strobe for AV_DATA and A_DATA inputs; note 2
V_STROBE165Ivideo data strobe for AV_DATA and A_DATA inputs; note 2
V
(gate input)166Sground for pad ring
SS
CPU_SEL(0)167ICPU data interface selection (0) input; note 2; note 3
CLK168I27 or 40.5 MHz clock input; note 2
V
SS
169Sground for pad ring
SIZ(1)170Isize of data on bus DATA (1) input; note 2
SIZ(0)171Isize of data on bus DATA (0) input; note 2
ADDRESS(20)172ICPU address input (bit 20); note 2
ADDRESS(19)173ICPU address input (bit 19); note 2
ADDRESS(18)174ICPU address input (bit 18); note 2
ADDRESS(17)175ICPU address input (bit 17); note 2
ADDRESS(16)176ICPU address input (bit 16); note 2
ADDRESS(15)177ICPU address input (bit 15); note 2
ADDRESS(14)178ICPU address input (bit 14); note 2
ADDRESS(13)179ICPU address input (bit 13); note 2
ADDRESS(12)180ICPU address input (bit 12); note 2
ADDRESS(11)181ICPU address input (bit 11); note 2
V
DATACK203O/Zdata acknowledge output; note 2
DS/TS204Idata strobe or transfer start input; note 2
DATA(0)205I/OCPU data input or output (bit 0); note 2
DATA(1)206I/OCPU data input or output (bit 1); note 2
DATA(2)207I/OCPU data input or output (bit 2); note 2
DATA(3)208I/OCPU data input or output (bit 3); note 2
Notes
1. Pin type abbreviations: I = Input, O = Output, I/O = Input or Output, O/Z = high impedance Output and
S = Supply voltage.
2. 5 V tolerant outputs swing between VSSand VDD. 5 V tolerant inputs can receive signals swinging between VSSand
3.3 V or VSS and 5 V.
3. SignalCPU_SEL(1)is used only after a global hardware resetisappliedon external input line RESET for determining
the type of the microcontroller connected to SAA7215; SAA7216; SAA7221 and therefore apply the proper
communication protocol. This microcontroller type must be given by means of weak pull-up or pull-down externally
connected to CPU_SEL(1). During normal operation, the pin TTXRQ/CPU_SEL(1) is used for implementing the
Teletext Data Request protocol and must not be disturbed by the microcontroller type setting.
166V
168CLKI−5.0 V tolerantrising edge
145RESETI−5.0 V tolerantlow level
162AV_DATA(7)I−5.0 V tolerantdirect level
161AV_DATA(6)I−5.0 V tolerantdirect level
160AV_DATA(5)I−5.0 V tolerantdirect level
159AV_DATA(4)I−5.0 V tolerantdirect level
158AV_DATA(3)I−5.0 V tolerantdirect level
157AV_DATA(2)I−5.0 V tolerantdirect level
156AV_DATA(1)I−5.0 V tolerantdirect level
155AV_DATA(0)I−5.0 V tolerantdirect level
154A_DATAI−5.0 V tolerantlow level
153AUDDENI−5.0 V toleranthigh level
164A_STROBEI−5.0 V tolerantprogram level
165V_STROBEI−5.0 V tolerantprogram level
152A_REQO/Z3 mA5.0 V tolerantprogram level
151V_REQO/Z3 mA5.0 V tolerantprogram level
163ERRORI−5.0 V tolerantprogram level
142SDO/Z3 mA5.0 V tolerantdirect level
143SCKO/Z3 mA5.0 V tolerantedge
140WSO/Z3 mA5.0 V tolerantdirect level
141WBO/Z3 mA5.0 V tolerantdirect level
139SPDIFO/Z3 mA5.0 V tolerantdirect level
144FSCLKI/O3 mA5.0 V tolerantedge
126CP27O3 mA5.0 V tolerantrising edge
137YUV(7)I/O3 mA5.0 V tolerantdirect level
136YUV(6)I/O3 mA5.0 V tolerantdirect level
135YUV(5)I/O3 mA5.0 V tolerantdirect level
134YUV(4)I/O3 mA5.0 V tolerantdirect level
133YUV(3)I/O3 mA5.0 V tolerantdirect level
132YUV(2)I/O3 mA5.0 V tolerantdirect level
131YUV(1)I/O3 mA5.0 V tolerantdirect level
128YUV(0)I/O3 mA5.0 V tolerantdirect level
125HSI/O3 mA5.0 V tolerantprogram level
124VSI/O3 mA5.0 V tolerantprogram level
123GRPHO/Z3 mA5.0 V toleranthigh level
114R/CVBS−−−analog
112G−−−analog
111B−−−analog
116Y/CVBS−−−analog
6DATA(8)I/O6 mA5.0 V tolerantdirect level
5DATA(7)I/O6 mA5.0 V tolerantdirect level
4DATA(6)I/O6 mA5.0 V tolerantdirect level
3DATA(5)I/O6 mA5.0 V tolerantdirect level
2DATA(4)I/O6 mA5.0 V tolerantdirect level
208DATA(3)I/O6 mA5.0 V tolerantdirect level
207DATA(2)I/O6 mA5.0 V tolerantdirect level
206DATA(1)I/O6 mA5.0 V tolerantdirect level
205DATA(0)I/O6 mA5.0 V tolerantdirect level
172ADDRESS(20)I−5.0 V tolerantdirect level
173ADDRESS(19)I−5.0 V tolerantdirect level
174ADDRESS(18)I−5.0 V tolerantdirect level
175ADDRESS(17)I−5.0 V tolerantdirect level
176ADDRESS(16)I−5.0 V tolerantdirect level
177ADDRESS(15)I−5.0 V tolerantdirect level
178ADDRESS(14)I−5.0 V tolerantdirect level
179ADDRESS(13)I−5.0 V tolerantdirect level
180ADDRESS(12)I−5.0 V tolerantdirect level
181ADDRESS(11)I−5.0 V tolerantdirect level
185ADDRESS(10)I−5.0 V tolerantdirect level
186ADDRESS(9)I−5.0 V tolerantdirect level
187ADDRESS(8)I−5.0 V tolerantdirect level
188ADDRESS(7)I−5.0 V tolerantdirect level
189ADDRESS(6)I−5.0 V tolerantdirect level
190ADDRESS(5)I−5.0 V tolerantdirect level
191ADDRESS(4)I−5.0 V tolerantdirect level
192ADDRESS(3)I−5.0 V tolerantdirect level
193ADDRESS(2)I−5.0 V tolerantdirect level
194ADDRESS(1)I−5.0 V tolerantdirect level
195ADDRESS(0)I−5.0 V tolerantdirect level
170SIZ(1)I−5.0 V tolerantdirect level
171SIZ(0)I−5.0 V tolerantdirect level
201
202
204
196R/
203
CS
RG
I−5.0 V tolerantlow level
CSSD/ADDRESS(21)I−5.0 V tolerantlow level
DSI−5.0 V tolerantlow level
WI−5.0 V tolerantdirect level
DTACKO/Z6 mA5.0 V tolerantlow level
199DMA_REQI/O3 mA5.0 V tolerantprogram level
200DMA_ACKI−5.0 V tolerantprogram level
197DMA_RDYO/Z3 mA5.0 V tolerantprogram level
198DMA_DONEI−5.0 V tolerantprogram level
149IRQ(1)O/Z3 mA5.0 V tolerantprogram level
150IRQ(0)O/Z3 mA5.0 V tolerantprogram level
104TDII−5.0 V tolerantdirect level
105TDOO/Z3 mA5.0 V tolerantdirect level
106TMSI−5.0 V tolerantdirect level
108TCKI−5.0 V tolerantedge
107TRSTI−5.0 V tolerantlow level
121AV
115AV
113AV
SOLDERING
Introduction to soldering surface mount packages
Thistextgivesavery brief insight to a complex technology.
A more in-depth account of soldering ICs can be found in
our
“Data Handbook IC26; Integrated Circuit Packages”
(document order number 9398 652 90011).
There is no soldering method that is ideal for all surface
mount IC packages. Wavesoldering is not always suitable
for surface mount ICs, or for printed-circuit boards with
high population densities. In these situations reflow
soldering is often used.
Reflow soldering
Reflow soldering requires solder paste (a suspension of
fine solder particles, flux and binding agent) to be applied
tothe printed-circuit board by screen printing,stencillingor
pressure-syringe dispensing before package placement.
Several methods exist for reflowing; for example,
infrared/convection 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 230 °C.
• 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 (e):
– 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
printed-circuit board.
The footprint must incorporate solder thieves at the
downstream end.
• Forpackageswithleadsonfoursides,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.
Manual soldering
Wave soldering
Conventional single wave soldering is not recommended
forsurfacemountdevices(SMDs)orprinted-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:
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.
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). For details, refer to the
Drypack information in the
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, then 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 (e) equal to or larger than 0.8 mm;
it is definitely not suitable for packages with a pitch (e) equal to or smaller than 0.65 mm.
5. Wave soldering is only suitable for SSOP and TSSOP packages with a pitch (e) equal to or larger than 0.65 mm; it is
definitely not suitable for packages with a pitch (e) equal to or smaller than 0.5 mm.
Objective dataDevelopmentThis data sheet contains data from the objective specification for product
Preliminary dataQualificationThis data sheet contains data from the preliminary specification.
Product dataProductionThis data sheet contains data from the product specification. Philips
(1)
STATUS
(2)
DEFINITIONS
development. Philips Semiconductors reserves the right to change the
specification in any manner without notice.
Supplementary data will be published at a later date. Philips
Semiconductors reserves the right to change the specification without
notice, in order to improve the design and supply the best possible
product.
Semiconductors reserves the right to make changes at any time in order
to improve the design, manufacturing and supply. Changes will be
communicated according to the Customer Product/Process Change
Notification (CPCN) procedure SNW-SQ-650A.
Notes
1. Please consult the most recently issued data sheet before initiating or completing a design.
2. The product status of the device(s) described in this data sheet may have changed since this data sheet was
published. The latest information is available on the Internet at URL http://www.semiconductors.philips.com.
DEFINITIONS
Short-form specification The data in a short-form
specification is extracted from a full data sheet with the
same type number and title. For detailed information see
the relevant data sheet or data handbook.
Limiting values definition Limiting values given are in
accordance with the Absolute Maximum Rating System
(IEC 60134). Stress above one or more of the limiting
values may cause permanent damage to the device.
These are stress ratings only and operation of the device
attheseor at any other conditions above those given inthe
Characteristics sections of the specification is not implied.
Exposure to limiting values for extended periods may
affect device reliability.
Application information Applications that are
described herein for any of these products are for
illustrative purposes only. Philips Semiconductors make
norepresentationorwarrantythatsuchapplicationswillbe
suitable for the specified use without further testing or
modification.
DISCLAIMERS
Life support applications These products are not
designed for use in life support appliances, devices, or
systems where malfunction of these products can
reasonably be expected toresult in personal injury. Philips
Semiconductorscustomersusingorsellingtheseproducts
for use in such applications do so at their own risk and
agree to fully indemnify Philips Semiconductors for any
damages resulting from such application.
Right to make changes Philips Semiconductors
reserves the right to make changes, without notice, in the
products, including circuits, standard cells, and/or
software, described or contained herein in order to
improve design and/or performance. Philips
Semiconductors assumes no responsibility or liability for
theuseofanyoftheseproducts,conveys no licence or title
under any patent, copyright, or mask work right to these
products,andmakes no representations or warranties that
these products are free from patent, copyright, or mask
work right infringement, unless otherwise specified.
ICs with MPEG-2 functionality Use of this product in
any manner that complies with the MPEG-2 Standard is
expressly prohibited without a license under applicable
patents in the MPEG-2 patent portfolio, which license is
available from MPEG LA, L.L.C., 250 Steele Street, Suite
300, Denver, Colorado 80206.
United States: 811 East Arques Avenue, SUNNYVALE, CA 94088-3409,
Tel. +1 800 234 7381, Fax. +1 800 943 0087
Uruguay: see South America
Vietnam: see Singapore
Yugoslavia: PHILIPS, Trg N. Pasica 5/v, 11000 BEOGRAD,
Tel. +381 11 3341 299, Fax.+381 11 3342 553
For all other countries apply to: Philips Semiconductors,
Marketing Communications, Building BE-p, P.O. Box 218, 5600 MD EINDHOVEN,
The Netherlands, Fax. +31 40 27 24825
The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed
without notice. No liability will be accepted by the publisher for any consequence of its use. Publication thereof does not convey nor imply any license
under patent- or other industrial or intellectual property rights.
2001
Internet: http://www.semiconductors.philips.com
72
Printed in The Netherlands753504/03/pp28 Date of release: 2001 Mar 28Document order number: 9397750 08179
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