sensitivity better than -92 dBm is achieved with no RF oscillating or regenerative circuits. This results in virtually no RF spurious emis- sions. A low-loss SAW delay line provides the time delay necessary to sequence the two RF amplifiers. Time sequencing of the RF gain eliminates the need for frequency conversion prior to AM detection. This receiver is designed to operate from a 3 V lithium battery with typically l.3 mA current. For system design flexibility, the baseband output is accessible, and the comparator threshold can be changed externally between two settings. Typical applications include unlicensed wireless remote-controls, security and data-transmis- sion devices operating in United Kingdom under DTI MPT 1340 and in the USA under FCC part 15.
SKD83-12(08) Price The toolset has been designed to support the development of embedded applications. The features include the ability to place code and data at particular places in memory, being able to access the ST20 instruction set efficiently from C, and to reduce the C run-time overhead to suit the application.
SKD83-12(08) on stock| D0-7 | I/O | I)tiLIi UU'.IiII['UtiUU:}nitjInLUIILI\LJIriN UJnU. Jl LJIII |
| cs S0-3 DS DCC H7-1 R0-2 HO/DRO | I I I I O 0 O | microprocessor or PROM. Bidirectional bus for cursor sl [ address. so [ cs [ Stgnals chip that it is being addressed RO [ Register- address bits for \electing; one ofseven control Rl C reg7isters or either oF the cursor addres, regii.rers VSS [ R2 [ Strobes DO--, into the appropriate register or outputs R3 [ the cursor character address or curiior line address()nto DS [ the data bus CSYN [ Carrv from offchip dot counter establishing basic V::: ! character clock rate. VDD [ Character counter outputs. vcc L Three most significant bits of the Scan Counter: row HCR: [ select inputs to character generator. BL [ Pin deHnition is user programmable. Output iii MSB of DO [ Character Counter if M SB ofCharacters/Data Row Dl [. word is a "10u otherwise outout is MSB of Data Row D2 [ | 1 U 40 2 39 3 38 4 37 5 36 6 35 7 34 a 33 9 32 10 31 11 30 12 29 13 28 14 27 15 26 16 25 17 24 18 23 19 22 20 21 | ] S2 ] S3 ] H7 J H6 ] H5 J H4 ] H3 J H2 :] Hl J HO/DRO :] DR1 ] Df12 ] DR3 ] DP4 ] DR5 ] D7 ] D6 ] D5 ] D4 ] D3 |
| R3 DRl-5 BL HSYN VSYN CSYV Vcc VDD vss | O O 0 O 0 O Ps PS Ps | V\ LIl \J lJ a . , u LI " JOU VU LyU L I.J Counter Least significant bit of the scan counter. In interlaced mc)cie this bit detines the(d or even field. In this way, odd scan lines ofthe character font are selected during the c)dd field and even scans during the even field Data Row counter outputs Deiines non active portion of horizontal and vertical scans. Initiates horizontal retrace 1nitiates vertical retrace Active in non-interlaced mode onlv. Provicieh a rrue RS-17() compobite sync waveform. +5 volt Power Supply + 12 volt Power Supplv Ground reference |
| | | | |
| MecHaniccl life ops. | 30×106 |
| Electrical life ops. | I x 10s |
| Max. switcHing rare mecHon;cal/ot rated load ops./H | 72000/360 |
| Operore lpick upl/Release idrop out) timo oppr. rii s | 6/2 |
| Bounce rime N/O / N/C conracr apor. ms | i/4 |
| Amloienr remperature oC | -40...+75 1850C or 6Al |
| Storoge remoerofure oC | - 40+80 |
| Vibration resistance N/0 iN/C g ll0 ..150 Hzl | > 20/IO |
| SHock resisrance g | >100 |
| Dielecfric strengtH; coil-conroct/open contocr VAC | 5000/1500 |
| insulotion resistance M() | >lo' |
| Creepogeicleara nce coil/conrcct m ro. | >88 |
| Protection category to VDE 0106 | Il |
| Insulorion caregory/voltage rcting ro VDE OI10 | C/250, B/380 |
| Solder batH remperature/soldering rime roCx.oC/rTIOX. S | 260/5 |
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