C5122

C5122 NPC | Alldatasheet

Document overview

• Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
• PDF pages: 9

Technical content

au [? Cc 5122 NIPPON PRECISION CIRCUITS INC. CB Transceiver PLL IC ™ OVERVIEW * The C5122 series is a range of CB transceiver ICs fabricated using NPC's original molybdenum- gate CMOS technology. Each IC incorporates a PLL circuit, code ROM applicable to frequen- cies of various countries, and an UNLOCK signal generator circuit for channel switching. The IC also incorporates a built-in channel UP/DOWN control circuit and CHANNEL/PA display LED driver, thus reducing system cost. The master slice system will make the ICs compatible with CB frequencies used all over the world, including those specified by US and British standards. @ FEATURES m PINOUT (TOP VIEW) + Master slice makes IC applicable to CB specifications + 24-pin DIP of various nations. + Built-in CHANNEL UP/DOWN control circuit Sq Peer + Built-in UNLOCK signal generator circuit stoeQ 0 veeon + Built-in CHANNEL/PA display decoder “tag Ber + Channel-switching check tone control output pin st bp CT) pCHour + Built-in quartz crystal oscillator circuit (10.24 MHz seq po al pLD vss PDO crystal) pad 3] oP AL + Last channel backup function orf aor Mae + Master slice makes it possible to select between LED og HRN and LCD. + Built-in LED driver + 24-pin SSOP + Built-in amplifier for active LPF sa d hpi + One crystal PLL synthesizer Sb Reet + Emergency channel call function s ¢ oO B BRON + Power-on initialize function Se Oley hte + Supply voltage range 5.3 to 6.3 V seq nS pCHoor + Available in 24-pin plastic DIP or SSOP ved 8 N Ahoo + Molybdenum-gate CMOS construction od BH pat oO lm PACKAGE DIMENSIONS od CO pve * 24-pin DIP + 24-pin SSOP 102 #050 DMM MMM MYM 2

8 BARARARABABAl

oH jaazam | ce assoxs1zT¥P 3 g loszo2 048 +02 3 a NIPPON PRECISION CIRCUITS 83 i

| S758 | LED segment drive outputs. Active "L" LD TUNLOCK signal output. When unlocked, it is "L". When locked it goes "H". Vss Ground. Should be left "OPEN" during backup. | CHourr [Check tone control signal output for channel- |switching. Approx. 50 ms pulse is output. Active "H". PA PA display input. Display when H. Internal TR |TX/RX switching input. “H" for TX, and pull-down resistor "OPEN" for RX. Intemal pull-down resistor. Qu Quartz crystal oscillator circuit input and output 1 [Emergency call pin. "H": Emergency channel. Qovr "OPEN": UP/DN input channel. Vse Ground *EMG [Emergency call pin. "H”: Emergency CHI. ; "L": Emergency ; Programmable counter input. Internal feedback ICH2. "OPEN": UP/DN input CH. resistor. UP/DN_|UP/DN Channel UP/DOWN control input. "H": ‘AL, AO _ | Lowpass filter amplifier input and output. The | RSFT [RX CODE SHIFT input. When "A", RX CODE Alpin goes "H" during standby shifts by +1. Internal pull-down resistor Phase detector output. Tristate output. DI LED digit drive output. When "L", low-order digits are displayed. When "H", high-order : digits are displayed. *EMG: Two versions with different EMG functions are available. NOP: Non operation Function 1: C5122Q10 Function 2: C51220 20) m BLOCK DIAGRAM Vss AREA ae | i i RSFT | RT) aco LE Se Q | [Sm Seo i : 8 i Chal. [_]ctour | st CH ES aun rox [be cowmmoten |__7Jip (sO . [yr | UsOe | TM Pa a pal PROGRAMMABLE 2 I i DIVIDER a {Jao - ew H8 Tio | / “OT DIVIDER Oe | j 84 NIPPON PRECISION CIRCUITS

™@ ABSOLUTE MAXIMUM RATING (SSOP) il ~ABSOLUTE MAXIMUM RATING (DIP) (Vss=0V) (Vss=0V) [Power dissipation [Pw [150 mw_ [Storage temperature | Tero | 4010 +125_| =| [Solderingime | win | 10 | Seo |[Solderingime [si [10 See | [Maximum ouipat curren] To [10 | mA | m ELECTRICAL CHARACTERISTICS Vss = 0 V, Vov = 5.3 to 6.3 V and Ta = -30 to +80 °C unless otherwise sp ified. [Supply voluge | Voo [Fw-FuwIvppOn-iver | 53 | 58 [63 [| v | | Al=Veo with DIP package Maximum opening | hus [Fu= Wen newave i | | | i [| frequency [www On =1Voe sine wave Mie | aia ae Panera Pe fe 2 YN JOpensatevolage | Vio |VmenSavtanaee it 28 [29 [as |v | FmQm | Tnpotcurent [i [vet=ov Wanesv anaes [| Pk | rae | [ctw —[Vint= Veo Veo= 630 Ta= 25°C [|_| 20_[ 9A | [iz [na= OV Vinwesv tanare [PTT a | TR [ind —[vi2-= Veo Voo= Gav Ta= 25°C |_| 100 [200] WA] _ EMG, RSF [as [Vis = OV Voo=Gav Ta=25C | | 100 | 200_| wA_| UPDN [ing — [Wis = Veo Voom 630 Ta 25°C |_| 100] 200 [aA peep eI See typical application [Ton [Wor= Von=0a YO a [ion —[Vor= Ven=0av a [ad [von 0av Alnves = i A [oO] [Tos [vonnvoosoavarves [mT] A | Hanno a | NIPPON PRECISION CIRCUITS 85

+ LED display* + LCD display —f> (t—-F -4e] b cs5122 ? nese weemiemox e300 Stasane {x | — > [A ‘roxt Out Q a aad bia] ca 7 6 6 wot * a) let | I wea] LCD driver] | LCD driver | Tal @) ial BA ‘ uJ PRERL PRR TREE iii ° D = *cs122 3 aii aeessaoat sch 5s 3 HETIL Ts | ae . rt sae” V Sa~ Sc: High-order digit data outputs (BCD) : Sd ~ Sg: Low-order digit data outputs (BCD) D1: display drive clock 78 Hz, 50% duty CR values are given for reference. No values are given where nothing is specified. Note: The circuit shown below is for the C5122 Q 2 Q version. aa ler MO ere EMG me Mm CHANNEL BACKUP CIRCUIT m UP/DOWN SWITCH INTERFACE EXAMPLE Ve Vp t e 3 . 0 . - BLE RI [oe : (Detent SW interface) (Push, up/down SW interface) o is Ris a current limiter resistor when both are pressed simultaneously (RS 1 KQ). In this example, the down C1 =0.01 pF. RI and R2 are not specified. ‘operation is performed when both A mechanical switch may be used as QI. switches are pressed simultaneously. ey

86 NIPPON PRECISION CIRCUITS

lm UP AND DOWN SWITCH TIMING The UP/DOWN pin is provided for channel up/down control. In addition to step-up and step- down functians, this pin implements the fast-forward function. Holding down the key continu- ally for wait time tw or longer starts fast forwarding in tr cycles. The up/down operation is disabled when the EMG, PA and T/R pins are "H". The up/down operation is also disabled when the Vss pin is not "L" (during standby). + UP/DN pin timing chart “Timing is the same when UP/DN pin [UPIDN pin (when “L") a A Nn w 7 . 286m8 DATA Hams ome — Pg ; by 8102S ty ~ 1024mS @ EMG (C5122 0 1 OQ version) : Taking the EMG pin "H" selects the emergency channel. When "OPEN", the channel returns to : what was set by the UP/DN pin. + EMG pin timing chart + 25.6mS + LOCK UP TIME + 4.8enS EMG pia / . OE FE DATA as TEMG may be at «level indicated by dotd lines, @ EMG (C5122 O 2 O version) Taking the EMG pin "H" selects emergency channel 1, and taking it "L" selects emergency channel 2, When "OPEN", the channel returns to what was set by the UP/DN pin. + EMG pin timing chart (setting to emergency channel 1) **25.6mS + LOCK UP TIME + 48S EMG (when "H7) LUPIDN pin (when “L") i o~siams, - me 25.5mS 25.65 DATA ‘i { : i tour ' NIPPON PRECISION CIRCUITS 87

‘The LD pin-goes "H" when the PLL is locked, and goes "L" when the PLL is unlocked. The LD pin may go "L" by the UP/DN, REST, T/R or EMG pin. It may also go "L" when the PLL unlocks due to external instability. a. Case of input pin tow PHASE DIFFERENCE, Goternal) PLL DATA Lopin ory q b. Unlocking due to external instability PHASE (we DIFFERENCE Gmternal) LD pin Lad tow -..ec- Phase difference (time difference) for detecting unlocking 16 uS (TYP) m PAPIN is reset 4.8 ms + 10% Making this pin go '"H" enables PA display. Leaving it "OPEN" resumes the previous PLL operation. The PLL operation stops during PA display, and the following state is created. * Alpin: "H" level * CHout pin: "L" level * DO pin and LD pin: High impedance * Channel information is retained. @ T/Rpin Transmission and receiving switching pin. The level of this pin (H/L) does not affect EMG. However, when this pin is "H", the channel up/down operation is disabled. At the time of switching, the LD pin operates in the same manner as the other input pins. @ RSFT pin Making this pin go "H" increments RX CODE by 1. Leaving it "OPEN" obtains the original CODE. The timing chart is the same as that of the EMG pin. ™@ CHout pin The CHOUT pin outputs signals when the channel UP/DOWN operation is performed by the UP/DN pin, when the EMG pin level changes, or when the RSFT pin level changes. i 88 NIPPON PRECISION CIRCUITS

m@ PRIORITY OF INPUT PINS Data is input to UP/DN, EMG and PA pins according to the following priority: PA > EMG > UP/DN . If a high-priority pin goes "L" while a low-priority pin is in operation (e.g., from the time LD changes from H to L until to the CHOUT output stops), the high-priority pin operation starts after the low-priority pin operation is finished. With version C5122 Q1 , the EMG pin may be at the level indicated by the dotted line. uP/DN Lope 2a Bans ——s PLL Emergency channel DATA 7 ; @ > CHATTERING PREVENTION CIRCUIT A chattering prevention circuit is attached to each of the UP/DN, EMG, RSFT, PA and T/R pins. [tem | Symon Tomine Tmax [uni | [Atiowabiechaveringsime | ew | [| ss | [eccrine fe f= fs to ow Cr te Wh ww 51.2mS Sampling clock (internal) @ STANDBY MODE Leaving the Vss pin "OPEN" sets the standby mode and performs the following operation. + Cut off the pull-up resistor of the UP/DOWN pin. + FIN, QIN pin: "L" level, AI pin: "H" level + CHOUT pin: "L" level + DO,LD pin: High impedance * Quartz crystal oscillation is stopped. + Channel information is retained. * The LD pin goes "L" when the standby state returns to the normal operation state. LD ~ goes "H" after the PLL is locked. No signal is output from the CHOUT pin. : NIPPON PRECISION CIRCUITS 89

The display signals output from the Sa to Sg, D1 and PA pins display with the following display font. aa <<, ED ep <>, Dp a a ee a aad ED ED ED aD ED jo) (0 0d Ct te te a ea + Lighting segment | @ Channel display example C] * Non-lighting segment (J 02 (0 Ws ICH (9 im 9CH i (m9 23CH ‘al an! 19CH Jt al Vu) al (0 U8 it i= i i _) « j

©5122 ™ MASTER SLICES (example) po PK ch nc Te a a a | er DENMARK, NORWAY [iach THN TLED | a @ VERSION NAME cz 000 : Number 1 or 2 Letter P, S or M - + Frequency of built-in ROM (by country) || channels. +P for DP + Display output (for LED/LCD)_ +1 for 1 channel +S for SOP +» Function of pin 23 +2 for 2 channels: + M for SSOP @ FREQUENCY TABLE (reference) (Unit: MHz) ore PRT Ma |" RR (TX FIN) (RX FIN) (IX FIN) (RX FIN) 3 26985 | 13.4925 | 16.29 2B 27255 13.6275 | 16.56 4 27.005 13,5025 “1631 4 27.235 13.6175 1654 “5s [27015 | 1307s | 16.32 25 | 27.245 13.6225 | 16.55 9 27.065 13,5325 1637 29 21.295 13.6475 16.60 10 21075 13.5375 16.38 30 27.305 13,6525 1661 ul 27.085 13,5425 “16.39 31 27315 13.6575 “16.62 B “2s 13.5575 16.42 3 27335 13.6675 16.64 “1s | 2735 | 13.5675 “Yea 35 | 27355 13,6775 16.66 16 | 27155 135775 | 16.46 36. | 27365 | 136825. | 1667 17 | 27165 | 135825 | 1647 | 37—«(| 27375 | 13.6875. 16.68 1 | 27.175 135875 | 16.48 | 3827385 | 13.692 “1669 19 | 27185 | 13.5925 | 16.49 39 27395 | 136975 | 1670 “20° 27205 | 13.6025 “test | 40. | 27405 | 137025 | 1671 ; NIPPON PRECISION CIRCUITS 91