HT66F03T3/68F03T3 HA0220T HT46/48R01T3 HT48R01B M1001A D1006ACFG HT68F03

HT66F03T3/68F03T3 MCU with 315MHz/433MHz ASK Transmitter HA0220T Holtek HT66F03T3/68F03T3 Flash MCU ASK Transmitter MCU

HT66F03T3/68F03T3 HT66F03T3/68F03T3 MCU with 315MHz/433MHz ASK Transmitter HT66F03T3/68F03T3 HT66F03T3/68F03T3 MCU with 315MHz/433MHz ASK Transmitter HA0220T HA0220T Holtek HT66F03T3/68F03T3 HT66F03T3/68F03T3 Flash MCU ASK Transmitter MCU (315M/433MHz) Complete UHF transmitter Frequency range 300MHz to 450MHz Output Power up to 10dBm Low external part count Minimal external components Low voltage operation (down to 2.2V) Output matching circuit: () KEY PAD: PA0~PA3 PA6~PA7 1 HT66F03T3/68F03T3 HT66F03T3/68F03T3 MCU with 315MHz/433MHz ASK Transmitter : 433MHz 433.92MHz Crystal Y1 13.56MHz R1 RF As shown in schematic of design example, R1 resistor values for the 50 Demo board and corresponding typical values of conducted RF output levels are listed in the tables as bellow. R1 of the HT46/48R01T3 HT46/48R01T3 Demo board using the dipole antenna can be adjusted for the appropriate radiation to meet specification for the design. Output Power (dBm) R1() 10 3 0 0 390 560 2 Typical ID of PA (mA) 433MHz 315MHz 7.8 8.8 5.0 5.0 4.0 4.0 HT66F03T3/68F03T3 HT66F03T3/68F03T3 MCU with 315MHz/433MHz ASK Transmitter Reference Clock (CREF ) Example CREF Clock MCU IRC ; RTC PA5 CREF PA4 Data Output RF ; ; ; ; PA4 are toggle output pin PA5 are cref intput pin tmr0 are use to counter cref tmr1 are use to generate toggle #INCLUDE HT48R01B HT48R01B.INC CREF_DEMO .section CA1_TMP CA2_TMP GEN1_TMR_TMP GEN2_TMR_TMP PA5_TMP CREF_COUNT CREF_DEMO ORG JMP ORG JMP org JMP 'data' DB DB DB DB DB DB 1 1 1 1 1 1 .section at 0 'code' 00H MAIN 08H TMR0INT 0ch TMR1INT ;~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ;~~~~~~~~~~timer0 int ;~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ TMR0INT: SDZ CA1_TMP JMP POLLIN_PA5 INC CA2_TMP POLLIN_PA5: SZ PA5_TMP JMP HI LO: SNZ PA5 ;POLLING PA5 STATUS JMP NO_CHANGE SET PA5_TMP JMP INC_CREF_COUNT HI: SZ PA5 ;POLLING PA5 STATUS JMP NO_CHANGE CLR PA5_TMP JMP INC_CREF_COUNT INC_CREF_COUNT: SDZ CREF_COUNT JMP EXIT CLR ACC SUBM A,CA1_TMP CLR tmr0c.4 JMP EXIT 3 HT66F03T3/68F03T3 HT66F03T3/68F03T3 MCU with 315MHz/433MHz ASK Transmitter EXIT: NO_CHANGE: RETI ;~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ;~~~~~~~~~~timer1 int ;~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ TMR1INT: SDZ CREF_COUNT RETI SZ PA4 ;TOGGLE PA4 JMP CLR_PA4 SET PA4 JMP $+2 CLR_PA4: CLR PA4 MOV A,GEN1_TMR_TMP MOV CREF_COUNT,A reti ;~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ;~~~~~~~~~~MAIN ;~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ MAIN: ;INITIAL I/O CLR PBC1 SET PBC0 ;INITIAL COUNT CLR PA5_TMP MOV A,32 MOV CREF_COUNT,A CLR CA1_TMP CLR CA2_TMP ;INITIAL TIMER0 mov a,05h mov intc0,a mov a,82h mov tmr0c,a mov a,236 mov tmr0,a ;INITIAL TIMER1 set et1i mov a,236 mov tmr1,a mov a,80h mov tmr1c,a SNZ PA5 JMP $-1 SZ PA5 JMP $-1 set tmr0c.4 sz CREF_COUNT JMP $-1 CLR ET0I RLC CA1_TMP RLC CA2_TMP RLC CA1_TMP RLC CA2_TMP ;INITIAL PA4 INTO OUTPUT MODE(dout) ;INITIAL PA4 INTO INPUT MODE (cref) ; enable interupt ; tmr internal mode ; time base is (256-216)*1us=40us ; enable interupt ; time base is (256-216)*1us=40us ; tmr internal mode ; start tmr ;WAIT COUNTER FINISH ;Disablr timer 0 interrupt ;both ca1_tmp and ca2_tmp are store ;count value of one cycle * 32 ,so ;one cycle are CA1_TMP Divide 32 ; 4 HT66F03T3/68F03T3 HT66F03T3/68F03T3 MCU with 315MHz/433MHz ASK Transmitter RLC CA1_TMP RLC CA2_TMP ; ;divide 32 ;generate one 2.5ms cycle wave ;20us*CA2_TMP=5ms (1/200=5ms) ;tmr1 2.5ms=> 100us*CA2_TMP*2.5/5 ;so tmr1= CA2_TMP/2 CLR C RRC CA2_TMP RRC CA1_TMP MOV MOV MOV MOV A,CA1_TMP ;load counter value GEN1_TMR_TMP,A A,CA2_TMP GEN1_TMR_TMP,A set tmr1c.4 JMP $ END ; start tmr1 to generate Layout Note VCCGND RF (PA Ooutput Port) RF (Routing) PCB 45 6mils 6mils 6mils VCC GND 12mils IC Bypass IC Pin RF (PA Ooutput Port) GND RF Trace Performance (Antenna) 50 SMA DipolePatch /4 Cost Down RF Trace width=35milFR4 PCB 1mm 5 HT66F03T3/68F03T3 HT66F03T3/68F03T3 MCU with 315MHz/433MHz ASK Transmitter Example: Trace Antenna W: 35mil, L:1500 mil Layout Top Overlay Bottom Overlay(mirror) 6 HT66F03T3/68F03T3 HT66F03T3/68F03T3 MCU with 315MHz/433MHz ASK Transmitter Tool Note Flash MCU ICE M1001A M1001A + D1006ACFG D1006ACFG HT68F03 HT68F03 or HT66F03 HT66F03 RF Holtek 315MHz/433MHz ASK Tx RF Module ICE e-Writer Adapter CADP16NSOP-S CADP16NSOP-S Hope3000 7