aduc812

==99-9-30== P&S Î人Á¦Ô´µç×ӹɷÝÓÐÏÞ¹«Ë¾ ==35-1== P&S Î人Á¦Ô´µç×ӹɷÝÓÐÏÞ¹«Ë¾ µØÖ·:ºþ±±Î人ÊÐ׿µ¶ÈªÂ·15ºÅ ÐÅÏä:Î人ÊÐ70020ÐÅÏä Óʱà:430079 µç»°:(86) (027£©87493500¡«87493506 ´«Õæ:(86) (027) 87491166, 87493497 P &SÍøÍøÖ·:http://www.p8s.com AD¦ÌC812 MicroConverterTM£¬´øÓÐǶÈëʽÉÁËÙMCUµÄ¶àͨµÀ12λADת»»Æ÷ Ò»¡¢¸ÅÊö 1.1 Ò»°ã˵Ã÷ AD¦ÌC812ÊÇÈ«¼¯³ÉµÄ12λÊý¾Ý²É¼¯ÏµÍ³£¬ËüÔÚµ¥¸öоƬÄÚ°üº¬Á˸ßÐÔÄܵÄ×ÔУ׼¶àͨµÀADC£¬Á½¸ö 12λDACÒÔ¼°¿É±à³ÌµÄ8루Óë8051¼æÈÝ£©MCU¡£ ƬÄÚ8k×Ö½ÚµÄÉÁËÙ/µç²Á³ý£¨Flash/EE£©³ÌÐò´æ´¢Æ÷¡¢640×Ö½ÚµÄÉÁËÙ/µç²Á³ýÊý¾Ý´æ´¢Æ÷ÒÔ¼°256×Ö½Ú Êý¾ÝSRAMÖ§³Ö¿É±à³Ì¡¢Óë8051¼æÈݵÄÄںˡ£ ÁíÍâMCUÖ§³ÖµÄ¹¦ÄÜ°üÀ¨¿´ÃŹ·¶¨Ê±Æ÷¡¢µçÔ´¼àÊÓÆ÷ÒÔ¼°ADC DMA¹¦ÄÜ¡£Îª¶à´¦ÀíÆ÷½Ó¿ÚºÍI/OÀ© Õ¹ÌṩÁË32Ìõ¿É±à³ÌµÄI/OÏߣ¬I2C¼æÈݵÄSPIºÍ±ê×¼UART´®Ðж˿ÚI/O¡£ MCUÄں˺ÍÄ£Äâת»»Æ÷¶þÕß¾ùÓÐÕý³£¡¢¿ÕÏÐÒÔ¼°µôµç¹¤×÷ģʽ£¬ËüÌṩÁËÊʺÏÓڵ͹¦ÂÊÓ¦ÓõÄÁé»î µÄµçÔ´¹ÜÀí·½°¸¡£Æ÷¼þ°üÀ¨ÔÚ¹¤ÒµÎ¶ȷ¶Î§ÄÚÓÃ3VºÍ5Vµçѹ¹¤×÷Á½ÖÖ¹æ¸ñ£¬ËüÓÐ52Òý½Å¡¢ËÜÁÏËÄ·½Ðαâ ƽ·â×°ÐÎʽ¿É¹©Ê¹Óᣠ1.2 Ìصã l Ä£ÄâI/O 8ͨµÀ£¬¸ß¾«¶È12λADC ƬÄÚ£¬40ppm/¡æµçѹ»ù×¼ ¸ßËÙ200ksps ¸ßËÙADCÖÁRAM²¶»ñ£¨capture£©DMA¿ØÖÆÆ÷ Á½¸ö12λµçѹÊä³öDAC ƬÄÚζȴ«¸ÐÆ÷¹¦ÄÜ l ´æ´¢Æ÷ 8k×Ö½ÚƬÄÚÉÁËÙ/µç²Á³ý³ÌÐò´æ´¢Æ÷ 640×Ö½ÚƬÄÚÉÁËÙ/µç²Á³ýÊý¾Ý´æ´¢Æ÷ ƬÄÚ³äµç±Ã£¨²»ÐèÒªÍⲿVPP£© 256×Ö½ÚƬÄÚÊý¾ÝRAM 16M×Ö½ÚÍⲿÊý¾ÝµØÖ·¿Õ¼ä 64k×Ö½ÚÍⲿ³ÌÐòµØÖ·¿Õ¼ä l Óë8051¼æÈݵÄÄÚºË ¶î¶¨¹¤×÷ƵÂÊ12MHz£¨×î´ó16MHz£© 3¸ ö16λ¶¨Ê±Æ÷/¼ÆʱÆ÷ 32Ìõ¿É±à³ÌµÄI/OÏß ¸ßµçÁ÷Çý¶¯ÄÜÁ¦——¶Ë¿Ú3 9¸ öÖжÏÔ´£¬2¸ öÓÅÏȼ¶ l µçÔ´ ÓÃ3VºÍ5Vµçѹ¹¤×÷ Õý³£¡¢¿ÕÏк͵ôµçģʽ l ƬÄÚÍâΧÉ豸 UART´®ÐÐI/O 2Ïߣ¨ÓëI2C¼æÈÝ£©ºÍSPI´®ÐÐI/O ¿´ÃŹ·¶¨Ê±Æ÷ µçÔ´¼àÊÓÆ÷ ==99-9-30== P&S Î人Á¦Ô´µç×ӹɷÝÓÐÏÞ¹«Ë¾ ==35-2== P&S Î人Á¦Ô´µç×ӹɷÝÓÐÏÞ¹«Ë¾ µØÖ·:ºþ±±Î人ÊÐ׿µ¶ÈªÂ·15ºÅ ÐÅÏä:Î人ÊÐ70020ÐÅÏä Óʱà:430079 µç»°:(86) (027£©87493500¡«87493506 ´«Õæ:(86) (027) 87491166, 87493497 P &SÍøÍøÖ·:http://www.p8s.com 1.3 Ó¦Óà l ÖÇÄÜ´«¸ÐÆ÷£¨IEEE 1451.2¼æÈÝ£© l µç³Ø¹©µçϵͳ£¨ÊÖÌáµçÄÔ£¬ÒÇÆ÷£¬¼àÊÓÆ÷£© l ˲±ä²¶»ñϵͳ l DASºÍͨÐÅϵͳ 1.4 ¹¦ÄÜ·½¿òͼ AD¦ÌC812µÄ¹¦ÄÜ·½¿òͼÈçÏÂͼËùʾ¡£ MICROCONTROLLER 8051-COMPATIBLE MICROCONTROLLER POWER SUPPLY MONITOR WATCHDOG TIMER 2-WIRE SERIAL I/O 640 BYTES FLASH/EE DATA MEMORY 256 8 USER RAM SPI 12-BIT SUCCESSIVE APPROXIMATION ADC BUF ADC CONTROL AND CALIBRATION LOGIC T/H TEMP SENSOR 2.5V REF AIN MUX BUF 12-BIT DAC0 BUF MOSI/ SDATA MISO (P3.3) SCLOCKRxD (P3.1) TxD (P3.0) XTAL 2 XTAL 1 DGNDDVD DAGNDAVD D DAC0 DAC1 T0 (P3.4) T1 (P3.5) T2 (P1.0) T2EX (P1.1) (P3.2) (P3.3) ALE PSEN EA INT0 INT1 RESET ADuC812 P3.0 P3.7P2.0 P2.7P1.0 P1.7P0.0 P0.7 AIN0 (P1.0) AIN7 (P1.7) VREF CREF ON-CHIP SERIAL DOWN LOADER 8K BYTES FLASH/EE PROGRAM MEMORY DAC CONTROL 3 16-BIT TIMER/COUNTERS OSC UART MUX 12-BIT DAC1 1.5 Òý½ÅÅÅÁкÍÒý½Å˵Ã÷ 1.5.1 Òý½ÅÅÅÁÐ AD¦ÌC812µÄÒý½ÅÅÅÁÐÈçÏÂͼËùʾ¡£ 52 51 50 49 48 43 42 41 4047 46 45 44 14 15 16 17 18 19 20 21 22 23 24 25 26 1 2 3 4 5 6 7 8 9 10 13 12 11 39 38 37 36 35 34 33 32 31 30 29 28 27 PIN 1 IDENTIFIER TOP VIEW (Not to Scale) P 0. 7/ A D 7 P 0. 6/ A D 6 P 0. 5/ A D 5 P 0. 4/ A D 4 D V D D D G N D P 0. 3/ A D 3 P 0. 2/ A D 2 P 0. 1/ A D 1 P 0. 0/ A D 0 A L E P S E N IN T 0 IN T 1 C O N V S T E A W R R D P1.0/ADC0/T2 P1.1/ADC1/T2EX P1.2/ADC2 P1.3/ADC3 AVDD AGND CREF VREF DAC0 SS DAC1 P1.4/ADC4 P1.5/ADC5/ P1.6/ADC6 P2.7/A15/A23 P2.6/A14/A22 P2.5/A13/A21 P2.4/A12/A20 DGND DVDD XTAL2 (OUTPUT) XTAL1 (INPUT) P2.3/A11/A19 P2.2/A10/A18 P2.1/A9/A17 P2.0/A8/A16 SDATA/MOSI P 1. 7/ A D C 7 R E S E T P 3. 0/ R xD P 3. 1/ T xD P 3. 2/ P 3. 3/ /M IS O D V D D D G N D P 3. 4/ T 0 P 3. 5/ T 1/ P 3. 7/ S C L O C K P 3. 6/ ADuC812 ==99-9-30== P&S Î人Á¦Ô´µç×ӹɷÝÓÐÏÞ¹«Ë¾ ==35-3== P&S Î人Á¦Ô´µç×ӹɷÝÓÐÏÞ¹«Ë¾ µØÖ·:ºþ±±Î人ÊÐ׿µ¶ÈªÂ·15ºÅ ÐÅÏä:Î人ÊÐ70020ÐÅÏä Óʱà:430079 µç»°:(86) (027£©87493500¡«87493506 ´«Õæ:(86) (027) 87491166, 87493497 P &SÍøÍøÖ·:http://www.p8s.com 1.5.2 Òý½Å˵Ã÷ AD¦ÌC812µÄÒý½Å˵Ã÷ÈçϱíËùÊö¡£ ·ûºÅ ÀàÐÍ ¹¦ ÄÜ DVDD P Êý×ÖÕýµçÔ´µçѹ£¬¶î¶¨ÖµÎª+3V»ò+5V AVDD P Ä£ÄâÕýµçÔ´µçѹ£¬¶î¶¨ÖµÎª+3V»ò+5V CREF I ƬÄÚ»ù×¼µÄÈ¥ñîÒý½Å¡£ÔÚ´ËÒý½ÅºÍAGNDÖ®¼äÁ¬½Ó0.1¦ÌFµÄµçÈÝ VREF I/O »ù×¼ÊäÈë/Êä³ö¡£´ ËÒý½Åͨ¹ý´®Áªµç×èÁ¬½ÓÖÁÄÚ²¿»ù×¼£¬ÊÇÄ£Êýת»»Æ÷µÄ»ù×¼ Ô´¡£¶î¶¨ÄÚ²¿»ù×¼µçѹΪ2.5VÇÒ³öÏÖÔÚ´ËÒý½Å£¨µ±ADC»òDACÍâΧÉ豸±»Ê¹ ÄÜʱ£©¡£´ËÒý½Å¿ÉÓÉÍⲿ»ù×¼¹ýÇý¶¯ AGND G Ä£ÄâµØ¡£Ä£Äâµç·µÄµØ»ù×¼µã P1.0¡«P1.7 I ¶Ë¿Ú1½öΪ8λÊäÈë¶Ë¿Ú¡£ÓëÆäËû¶Ë¿Ú²»Í¬£¬¶Ë¿Ú1ȱʡΪģÄâÊäÈë¶Ë¿Ú£¬ÎªÁË °ÑÕâЩ¶Ë¿ÚµÄÈÎÒ»¸öÒý½ÅÅäÖÃΪÊý×ÖÊäÈ룬Ӧ°Ñ¡°0¡±Ð´ÖÁ¶Ë¿ÚÖµ¡£¶Ë¿Ú1Òý ½ÅÊǶ๦ÄܵÄÇÒ¹²ÏíÒÔϹ¦ÄÜ ADC0¡«ADC7 I Ä£ÄâÊäÈë¡£8¸ öµ¥¶ËÄ£ÄâÊäÈ롣ͨ¹ýADCCON2 SFR½øÐÐͨµÀÑ¡Ôñ T2 I ¶¨Ê±Æ÷2Êý×ÖÊäÈë¡£ÊäÈëÖÁ¶¨Ê±Æ÷/¼ÆʱÆ÷2¡£µ±±»Ê¹ÄÜʱ£¬¶ÔÓ¦ÓÚT2ÊäÈëµÄ1 ÖÁ0µÄÌø±ä£¬¼ÆÊýÆ÷2ÔöÁ¿ T2EX I Êý×ÖÊäÈë¡£¼ÆÊýÆ÷2 Capture/Reload£¨²¶»ñ/ÖØÔØ£©´ ¥·¢²¢ÓÃ×÷¼ÆÊýÆ÷2 Up/Down £¨ÉÏ/Ï£©¿ØÖÆÊäÈë SS I SPI½Ó¿ÚµÄ´ÓÊôÑ¡ÔñÊäÈë SDATA I/O Óû§¿ÉÑ¡£¬I2C¼æÈÝÊäÈë/Êä³öÒý½Å»òSPIÊý¾ÝÊäÈë/Êä³öÒý½Å SCLOCK I/O I2C¼æÈÝ´®ÐÐʱÖÓÒý½Å»òSPI´®ÐнӿÚʱÖÓ MOSI I/O ÓÃÓÚSPI½Ó¿ÚµÄSPIÖ÷Êä³ö/´ ÓÊäÈëÊý¾ÝI/OÒý½Å MISO I/O ÓÃÓÚSPI´®ÐнӿڵÄÖ÷ÊäÈë/´ ÓÊä³öÊý¾ÝI/OÒý½Å DAC0 O DAC0µçѹÊä³ö DAC1 O DAC1µçѹÊä³ö RESET I Êý×ÖÊäÈë¡£µ±Õñµ´Æ÷ÔËÐÐʱ£¬´ËÒý½ÅÉϳ¤´ï24¸ öÖ÷ʱÖÓÖÜÆڵĸߵçƽʹÆ÷¼þ ¸´Î» P3.0¡«P3.7 I/O ¶Ë¿Ú3ÊǾßÓÐÄÚ²¿ÉÏÀ­µç×èµÄË«Ïò¶Ë¿Ú¡£Ð´1µÄ¶Ë¿Ú3Òý½Å±»ÄÚ²¿ÉÏÀ­µç×èÀ­ÖÁ ¸ßµçƽ£¬ÔÚ´Ë״̬ÏÂËüÃǿɱ»ÓÃ×÷ÊäÈë¡£ÓÉÓÚÄÚ²¿ÉÏÀ­µç×裬±»ÍⲿÀ­ÖÁµÍ µçƽµÄ¶Ë¿Ú3Òý½Å½«ÌṩµçÁ÷¡£¶Ë¿Ú3Òý½ÅÒ²°üÀ¨¸÷ÖÖ´ÎÒª¹¦ÄÜ£¬ËüÃǽ«ÔÚÏ Ãæ˵Ã÷ RxD I/O ´®ÐУ¨UART£©¶Ë¿ÚµÄ½ÓÊÕÊý¾ÝÊäÈ루Òì²½£©»òÊý¾ÝÊäÈë/Êä³ö£¨Í¬²½£© TxD O ´®ÐУ¨UART£©¶Ë¿ÚµÄ·¢ËÍÊý¾ÝÊä³ö£¨Òì²½£©»òʱÖÓÊä³ö£¨Í¬²½£© 0INT I ÖжÏ0£¬¿É±à³ÌΪ±ßÑØ»òµçƽ´¥·¢ÖжÏÊäÈ룬Ëü¿ÉÒÔ±»±à³ÌÖÁÁ½¸öÓÅÏȼ¶Ö®Ò»¡£ ´ËÒý½ÅÒ²¿ÉÓÃ×÷¶¨Ê±Æ÷0ÃÅ£¨gate£©¿ØÖÆÊäÈë 1INT I ÖжÏ1£¬¿É±à³ÌΪ±ßÑØ»òµçƽ´¥·¢ÖжÏÊäÈ룬Ëü¿ÉÒÔ±»±à³ÌÖÁÁ½¸öÓÅÏȼ¶Ö®Ò»¡£ ´ËÒý½ÅÒ²¿ÉÓÃ×÷¶¨Ê±Æ÷1ÃÅ£¨gate£©¿ØÖÆÊäÈë T0 I ¶¨Ê±Æ÷/¼ÆÊýÆ÷0ÊäÈë T1 I ¶¨Ê±Æ÷/¼ÆÊýÆ÷1ÊäÈë CONVST I µ±Íⲿת»»Æô¶¯±»Ê¹ÄÜʱADC¿éµÍµçƽÓÐЧת»»Æô¶¯Âß¼­ÊäÈë¡£´ËÊäÈë¶ËµÍ µçƽÖÁ¸ßµçƽÌø±ä½«°Ñ¸ú×Ù/±£³ÖÖÃÈëÆä±£³Ö·½Ê½²¢Æô¶¯×ª»» WR O д¿ØÖÆÐźţ¬Âß¼­Êä³ö¡£°ÑÀ´×Զ˿Ú0µÄÊý¾Ý×Ö½ÚËø´æÈëÍⲿÊý¾Ý´æ´¢Æ÷ RD O ¶Á¿ØÖÆÐźţ¬Âß¼­Êä³ö¡£ÔÊÐíÍⲿÊý¾Ý´æ´¢Æ÷ËÍÖÁ¶Ë¿Ú0 XTAL2 O µ¹ÏàÕñµ´Æ÷·Å´óÆ÷µÄÊä³ö ==99-9-30== P&S Î人Á¦Ô´µç×ӹɷÝÓÐÏÞ¹«Ë¾ ==35-4== P&S Î人Á¦Ô´µç×ӹɷÝÓÐÏÞ¹«Ë¾ µØÖ·:ºþ±±Î人ÊÐ׿µ¶ÈªÂ·15ºÅ ÐÅÏä:Î人ÊÐ70020ÐÅÏä Óʱà:430079 µç»°:(86) (027£©87493500¡«87493506 ´«Õæ:(86) (027) 87491166, 87493497 P &SÍøÍøÖ·:http://www.p8s.com XTAL1 I ÊäÈëÖÁµ¹ÏàÕñµ´Æ÷·Å´óÆ÷²¢ÊäÈëÖÁÄÚ²¿Ê±ÖÓ²úÉúÆ÷µç· DGND G Êý×ֵء£Êý×ֵ緵ĵػù×¼µã P2.0¡«P2.7 (A8¡«A15) (A16¡«A23) I/O ¶Ë¿Ú2ÊǾßÓÐÄÚ²¿ÉÏÀ­µç×èµÄË«Ïò¶Ë¿Ú¡£Ð´1µÄ¶Ë¿Ú2Òý½Å±»ÄÚ²¿ÉÏÀ­µç×èÀ­ÖÁ ¸ßµçƽ£¬ÔÚ´Ë״̬ÏÂËüÃǿɱ»ÓÃ×÷ÊäÈë¡£ÓÉÓÚÄÚ²¿ÉÏÀ­µç×裬±»ÍⲿÀ­ÖÁµÍ µçƽµÄ¶Ë¿Ú2Òý½Å½«ÌṩµçÁ÷¡£¶Ë¿Ú2ÔÚ´ÓÍⲿ³ÌÐò´æ´¢Æ÷È¡Ö¸ÆÚ¼äÄÚ·¢³ö¸ß µØÖ·×Ö½Ú£¬ÔÚ·ÃÎÊÍⲿ24λÍⲿÊý¾Ý´æ´¢Æ÷¿Õ¼äʱ·¢³öÖк͸ߵØÖ·×Ö½Ú PSEN O ³ÌÐò´æ´¢Ê¹ÄÜ£¬Âß¼­Êä³ö¡£´ËÊä³ö¶ËÊÇ¿ØÖÆÐźţ¬ËüÔÚÍⲿȡָ²Ù×÷ÆÚ¼äÄÚ ÔÊÐíÍⲿ³ÌÐò´æ´¢Æ÷ËÍÖÁ×ÜÏß¡£³ýÁËÔÚÍⲿÊý¾Ý´æ´¢Æ÷·ÃÎÊÆڼ䣬Ëüÿ6¸ öÕñ µ´Æ÷ÖÜÆÚÓÐЧ¡£ÔÚÄÚ²¿³ÌÐòÖ´ÐÐÆÚ¼äÄÚ´ËÒý½Å±£³Ö¸ßµçƽ¡£µ±Éϵç»ò¸´Î»Í¨ ¹ýµç×èÀ­ÖÁµÍµçƽʱ£¬ PSENÒ²¿ÉÓÃÓÚʹÄÜ´®ÐÐÏÂÔØģʽ ALE O µØÖ·Ëø´æÔÊÐí£¬Âß¼­Êä³ö¡£ÔÚÕý³£¹¤×÷Æڼ䣬´ ËÊä³öÓÃÓڰѵØÖ·µÄµÍ×Ö½Ú£¨¶Ô ÓÚ24λµØÖ·¿Õ¼ä·ÃÎÊ»¹ÓÐÖÐ×Ö½Ú£©Ëø´æÈëÍⲿ´æ´¢Æ÷¡£³ýÁËÔÚÍⲿÊý¾Ý´æ´¢ Æ÷·ÃÎÊÆÚ¼äÄÚ£¬Ëüÿ6¸ öÕñµ´Æ÷ÖÜÆÚ±»¼¤»î£¨ÓÐЧ£© EA I Íⲿ·ÃÎÊʹÄÜ£¬Âß¼­ÊäÈë¡£µ±±£³Ö¸ßµçƽʱ£¬´ ËÊäÈëʹÆ÷¼þÄÜ´ÓµØַΪ0000H ÖÁ1FFFHµÄÄÚ²¿³ÌÐò´æ´¢Æ÷È¡»Ø´úÂë¡£µ±±£³ÖµÍµçƽʱ£¬´ËÊäÈëʹÆ÷¼þÄÜ´Ó Íⲿ³ÌÐò´æ´¢Æ÷È¡»ØËùÓÐÖ¸Áî P0.7¡«P0.0 (A0¡«A7) I/O ¶Ë¿Ú0ÊÇ8λ©¼«¿ªÂ·Ë«ÏòI/O¶Ë¿Ú¡£Ð´1µÄ¶Ë¿Ú0Òý½ÅÐü¿Õ£¬ÔÚ´Ë״̬Ï¿ÉÓÃ×÷ ¸ß×迹ÊäÈë¡£ÔÚ·ÃÎÊÍⲿ³ÌÐò»òÊý¾Ý´æ´¢Æ÷ÆÚ¼äÄÚ£¬¶Ë¿Ú0Ò²ÊǶà·¸´ÓÃµÄµÍ Î»µØÖ·ºÍÊý¾Ý×ÜÏß 1.6 ¶©»õÖ¸ÄÏ ÐͺŠÎ¶ȷ¶Î§ ·âװ˵Ã÷ ·â×°Ñ¡Ïî AD¦ÌC812BS -40¡æÖÁ+85¡æ 52Òý½ÅËÜÁÏËÄ·½Ðαâƽ·â×° S-52 QuickStartTM¿ª·¢ÏµÍ³ Eval_ AD¦ÌC812QS ×¢Ò⣺ ESD£¨¾²µç·Åµç£©Ãô¸ÐµÄÆ÷¼þ¡£¸ß´ï4000VµÄ¾²µçµçºÉÈÝÒ×¾Û¼¯ÔÚÈËÌåºÍ²âÊÔÉ豸ÉÏÇÒ»á·Åµç¶ø²»±» ·¢ÏÖ¡£ËäÈ»AD¦ÌC812µÄÌصãÊǾßÓÐרÀûµÄESD±£»¤µç·£¬µ«ÊÇÔâÊܸßÄܾ²µç·ÅµçµÄÆ÷¼þÈÔ¿ÉÄÜ·¢ÉúÓÀ¾Ã ÐÔµÄË𺦡£Òò´Ë£¬ÍƼö²ÉÓÃÊʵ±µÄESDÔ¤·À´ëÊ©ÒÔ±ÜÃâÐÔÄܵĽµµÍ»ò¹¦ÄܵÄɥʧ¡£ 1.7 ÊõÓï 1.7.1 ADC¼¼Êõ¹æ¸ñ 1.7.1.1 »ý·Ö·ÇÏßÐԶȣ¨Integral Nonlinearity£© ÕâÊÇÈκδúÂëÆ«Àëͨ¹ýADCתÒƺ¯Êý¶ËµãµÄÖ±ÏßµÄ×î´óÆ«ÀëÖµ¡£×ªÒƺ¯ÊýµÄ¶ËµãÊÇÁã¿Ì¶È£¨µÍÓÚµÚÒ» ¸ö´úÂëÌø±ä1/2 LSBµÄµã£©ºÍÂú¿Ì¶È£¨¸ßÓÚ×îºóÒ»¸ö´úÂëÌø±ä1/2 LSBµÄµã£©¡£ 1.7.1.2 ²î·Ö·ÇÏßÐԶȣ¨Differential Nonlinearity£© ÕâÊÇÔÚADCÄÚÈκÎÁ½¸öÏàÁÚ´úÂëÖ®¼ä²âµÃµÄºÍÀíÏëµÄ1LSB±ä»¯Á¿Ö®¼äµÄ²î¡£ 1.7.1.3 ʧµ÷Îó²î£¨Offset Error£© ÕâÊǵÚÒ»¸ö´úÂëÌø±ä£¨0000¡­000£©ÖÁ£¨0000¡­001£©Æ«ÀëÀíÏëÖµ£¬¼´+1/2 LSBµÄÆ«ÀëÖµ¡£ 1.7.1.4 Âú¿Ì¶ÈÎó²î£¨Full-Scale Error£© ==99-9-30== P&S Î人Á¦Ô´µç×ӹɷÝÓÐÏÞ¹«Ë¾ ==35-5== P&S Î人Á¦Ô´µç×ӹɷÝÓÐÏÞ¹«Ë¾ µØÖ·:ºþ±±Î人ÊÐ׿µ¶ÈªÂ·15ºÅ ÐÅÏä:Î人ÊÐ70020ÐÅÏä Óʱà:430079 µç»°:(86) (027£©87493500¡«87493506 ´«Õæ:(86) (027) 87491166, 87493497 P &SÍøÍøÖ·:http://www.p8s.com ÕâÊÇÔÚʧµ÷Îó²îÒѱ»µ÷ºó£¬×îºóÒ»¸ö´úÂëÌø±äÆ«ÀëÀíÏëAINµçѹ£¨Âú¿Ì¶È-1.5LSB£©µÄÆ«ÀëÖµ¡£ 1.7.1.5 ÐźÅÓ루ÔëÉù+ʧÕ棩±È£¨Signal to£¨Noise + Distortion£©Ratio£© ÕâÊÇÔÚA/Dת»»Æ÷Êä³ö¶Ë²âµÃµÄÐźÅÓ루ÔëÉù+ʧÕ棩֮±È¡£ÐźÅÊÇ»ù²¨µÄ¾ù·½¸ùÖµ¡£ÔëÉùÊdzýÁËÖ± Á÷Ö®Íâ¸ß´ï²ÉÑùƵÂÊÒ»°ë£¨fS/2£©µÄËùÓзǻù²¨Ðźŵľù·½¸ùÖµÖ®ºÍ¡£±Èֵȡ¾öÓÚÊý×Ö»¯¹ý³ÌÖÐÁ¿»¯µçƽ µÄÊýÄ¿£»Á¿»¯µçƽԽ¶à£¬Á¿»¯ÔëÉùԽС¡£ÕýÏÒ²¨ÊäÈëµÄÀíÏëNλת»»Æ÷µÄÀíÂÛÐźÅÓ루ÔëÉù+ʧÕ棩֮±È ÓÉÏÂʽ¸ø³ö£º ÐźÅÓ루ÔëÉù+ʧÕ棩±È=£¨6.02N+1.76£©dB Òò´Ë¶ÔÓÚ12λת»»Æ÷£¬´ËֵΪ74dB¡£ 1.7.1.6 ×Üг²¨Ê§Õæ ×Üг²¨Ê§ÕæÊÇг²¨¾ù·½¸ùÖµÖ®ºÍÓë»ù²¨Ö®±È¡£ 1.7.2 DAC¼¼Êõ¹æ¸ñ 1.7.2.1 Ïà¶Ô¾«¶È Ïà¶Ô¾«¶È»ò¶ËµãÏßÐÔ¶ÈÊÇÆ«Àëͨ¹ýDACתÒƺ¯Êý¶ËµãµÄÖ±ÏßµÄ×î´óÆ«ÀëµÄ²âÁ¿Öµ¡£ËüÔÚµ÷ÕûÁãÎó²îºÍ Âú¿Ì¶ÈÎó²îÖ®ºó±»²âÁ¿¡£ 1.7.2.2 µçѹÊä³öÎȶ¨Ê±¼ä ÕâÊǶÔÓÚÂú¿Ì¶ÈµÄÊäÈë±ä»¯£¬Êä³öÎȶ¨ÖÁ¹æ¶¨µçƽËùÐèµÄʱ¼äÖµ¡£ 1.7.2.3 Êý×ÖÖÁÄ£ÄâÉÁ±äÂö³å ÕâÊǵ±ÊäÈë¸Ä±ä״̬ʱעÈ뵽ģÄâÊä³öµÄµçºÉÁ¿¡£Ëü±»¹æ¶¨ÎªÒÔnVsec¼ÆµÄÉÁ±äµÄÃæ»ý¡£ ¶þ¡¢ÌØÐÔ 2.1 ¼«ÏÞ²ÎÊý*£¨TA=+25¡æ£¬³ý·ÇÁíÓÐ˵Ã÷£© AVDDÖÁDVDD –0.3VÖÁ+0.3V AGNDÖÁDGND –0.3VÖÁ+0.3V DVDDÖÁDGND£¬AVDDÖÁAGND –0.3VÖÁ+7V Êý×ÖÊäÈëµçѹ£¨Ïà¶ÔÓÚDGND£© -0.3V£¬DVDD+0.3V Êý×ÖÊä³öµçѹ£¨Ïà¶ÔÓÚDGND£© -0.3V£¬DVDD+0.3V VREF£¨Ïà¶ÔÓÚAGND£© -0.3V£¬AVDD+0.3V Ä£ÄâÊäÈ루Ïà¶ÔÓÚAGND£© -0.3V£¬AVDD+0.3V ¹¤×÷ζȷ¶Î§ ¹¤ÒµÓã¨BÐÍ£© -40¡æÖÁ+85¡æ ´¢´æζȷ¶Î§ –65¡æÖÁ+150¡æ ½áΠ+150¡æ ¦ÈJAÈÈ×è 90¡æ/W ÒýÏßζȣ¬º¸½Ó ÆûÏࣨ60Ã룩 +215¡æ ºìÍ⣨15Ã룩 +220¡æ * Ç¿¶È³¬³öËùÁеļ«ÏÞ²ÎÊý¿ÉÄܵ¼ÖÂÆ÷¼þµÄÓÀ¾ÃÐÔË𻵡£ÕâЩ½ö½öÊǼ«ÏÞ²ÎÊý£¬²¢²»Òâζ×ÅÔÚ¼«Ï޲ΠÊýÌõ¼þÏ»òÔÚÈκÎÆäËü³¬³ö±¾ËµÃ÷ÊéÕý³£ÔËÓø÷½ÚÖÐËùÁвÎÊýµÄÇé¿öÏÂÆ÷¼þÄÜÓÐЧµØ¹¤×÷¡£ÑÓ³¤ÔÚ¼«Ï޲ΠÊýÌõ¼þÏµĹ¤×÷ʱ¼ä»áÓ°ÏìÆ÷¼þµÄ¿É¿¿ÐÔ¡£ ==99-9-30== P&S Î人Á¦Ô´µç×ӹɷÝÓÐÏÞ¹«Ë¾ ==35-6== P&S Î人Á¦Ô´µç×ӹɷÝÓÐÏÞ¹«Ë¾ µØÖ·:ºþ±±Î人ÊÐ׿µ¶ÈªÂ·15ºÅ ÐÅÏä:Î人ÊÐ70020ÐÅÏä Óʱà:430079 µç»°:(86) (027£©87493500¡«87493506 ´«Õæ:(86) (027) 87491166, 87493497 P &SÍøÍøÖ·:http://www.p8s.com 2.2 µçÌØÐÔ AD¦ÌC812——¼¼Êõ¹æ¸ñ1£¬2 £¨AVDD=DVDD=+3.0V»ò+5.0V¡À10%£¬VREF=2.5VÄÚ²¿»ù×¼£¬MCLKIN=16.0MHz£¬DAC VOUT¸ºÔØÖÁ AGND£»RL=10k¦¸£¬CL=100pF¡£³ý·ÇÁíÓÐ˵Ã÷£¬ËùÓм¼Êõ¹æ¸ñ¾ùΪTA=TMINÖÁTMAX·¶Î§ÄڵIJÎÊý£© ADuC812BS Parameter VDD = 5 V VDD = 3 V Units Test Conditions/Comments ADC CHANNEL SPECIFICATIONS DC ACCURACY3, 4 Resolution 12 12 Bits Integral Nonlinearity 1/2 1/2 LSB typ fSAMPLE = 100 kHz 1.5 LSB max fSAMPLE = 100 kHz 1.5 1.5 LSB typ fSAMPLE = 200 kHz Differential Nonlinearity 1 1 LSB typ fSAMPLE = 100 kHz. Guaranteed No Missing Codes at 5 V CALIBRATED ENDPOINT ERRORS5, 6 Offset Error 5 LSB max 1 2 LSB typ Offset Error Match 1 1 LSB typ Gain Error 6 LSB max 1 2 LSB typ Gain Error Match 1.5 1.5 LSB typ USER SYSTEM CALIBRATION 7 Offset Calibration Range 5 5 % of VREF typ Gain Calibration Range 2.5 2.5 % of VREF typ DYNAMIC PERFORMANCE fIN = 10 kHz Sine Wave fSAMPLE = 100 kHz Signal-to-Noise Ratio (SNR)8 70 70 dB typ Total Harmonic Distortion (THD) 78 78 dB typ Peak Harmonic or Spurious Noise 78 78 dB typ ANALOG INPUT Input Voltage Ranges 0 to VREF 0 to VREF Volts Leakage Current 10 A max 1 +1 A typ Input Capacitance 20 20 pF max TEMPERATURE SENSOR9 Voltage Output at +25C 600 600 mV typ Measured On-Chip via a Typical Voltage TC 3.0 3.0 mV/C typ 0.5 LSB (610 V) Accurate ADC DAC CHANNEL SPECIFICATIONS DC ACCURACY10 Resolution 12 12 Bits Relative Accuracy 3 3 LSB typ Differential Nonlinearity 0.5 1 LSB typ Guaranteed 12-Bit Monotonic Offset Error 50 mV max 25 25 mV typ Full-Scale Error 25 mV max 10 10 mV typ Full-Scale Mismatch 0.5 0.5 % typ % of Full-Scale on DAC1 ANALOG OUTPUTS Voltage Range_0 0 to VREF 0 to VREF V typ Voltage Range_1 0 to VDD 0 to VDD V typ Resistive Load 10 10 k typ Capacitive Load 100 100 pF typ Output Impedance 0.5 0.5 typ ISINK 50 50 A typ ==99-9-30== P&S Î人Á¦Ô´µç×ӹɷÝÓÐÏÞ¹«Ë¾ ==35-7== P&S Î人Á¦Ô´µç×ӹɷÝÓÐÏÞ¹«Ë¾ µØÖ·:ºþ±±Î人ÊÐ׿µ¶ÈªÂ·15ºÅ ÐÅÏä:Î人ÊÐ70020ÐÅÏä Óʱà:430079 µç»°:(86) (027£©87493500¡«87493506 ´«Õæ:(86) (027) 87491166, 87493497 P &SÍøÍøÖ·:http://www.p8s.com ÐøÉϱí ADuC812BS Parameter VDD = 5 V VDD = 3 V Units Test Conditions/Comments DAC AC CHARACTERISTICS Voltage Output Settling Time 15 15 s typ Full-Scale Settling Time to Within 1/2 LSB of Final Value Digital-to-Analog Glitch Energy 10 10 nV sec typ 1 LSB Change at Major Carry REFERENCE INPUT/OUTPUT REFIN Input Voltage Range 2.3/VDD 2.3/VDD V min/max Input Impedance 150 150 k typ REFOUT Output Voltage 2.45/2.55 V min/max 2.5 2.5 V typ REFOUT Tempco 40 40 ppm/C typ FLASH/EE MEMORY PERFORMANCE CHARACTERISTICS 11, 12 Endurance 10,000 Cycles min 50,000 50,000 Cycles typ Data Retention 10 Years min WATCHDOG TIMER CHARACTERISTICS Oscillator Frequency 64 64 kHz typ POWER SUPPLY MONITOR CHARACTERISTICS Power Supply Trip Point Accuracy 2.5 % of Selected Nominal Trip Point Voltage max 1.0 1.0 % of Selected Nominal Trip Point Voltage typ DIGITAL INPUTS Input High Voltage (VINH) 2.4 V min Input Low Voltage (VINL) 0.8 V max Input Leakage Current (Port EA)0, 10 A max VIN = 0 V or VDD 1 1 A typ VIN = 0 V or VDD Logic 1 Input Current (All Digital Inputs) 10 A max VIN = VDD 1 1 A typ VIN = VDD Logic 0 Input Current (Port 1, 2, 3) 80 A max 40 40 A typ VIL = 450 mV Logic 1-0 Transition Current (Port 1, 2, 3) 700 A max VIL = 2 V 400 400 A typ VIL = 2 V Input Capacitance 10 10 pF typ ==99-9-30== P&S Î人Á¦Ô´µç×ӹɷÝÓÐÏÞ¹«Ë¾ ==35-8== P&S Î人Á¦Ô´µç×ӹɷÝÓÐÏÞ¹«Ë¾ µØÖ·:ºþ±±Î人ÊÐ׿µ¶ÈªÂ·15ºÅ ÐÅÏä:Î人ÊÐ70020ÐÅÏä Óʱà:430079 µç»°:(86) (027£©87493500¡«87493506 ´«Õæ:(86) (027) 87491166, 87493497 P &SÍøÍøÖ·:http://www.p8s.com ÐøÉϱí ADuC812BS Parameter VDD = 5 V VDD = 3 V Units Test Conditions/Comments DIGITAL OUTPUTS Output High Voltage (VOH) 2.4 V min VDD = 4.5 V to 5.5 V ISOURCE = 80 A 4.0 2.6 V typ VDD = 2.7 V to 3.3 V ISOURCE = 20 A Output Low Voltage (VOL) ALE, , Ports 0 and 2 0.4 V max ISINK = 1.6 mA 0.2 0.2 V typ ISINK = 1.6 mA Port 3 0.4 V max ISINK = 8 mA 0.2 0.2 V typ ISINK = 8 mA Floating State Leakage Current 10 A max 5 5 A typ Floating State Output Capacitance 10 10 pF typ POWER REQUIREMENTS13, 14, 15 IDD Normal Mode16 42 mA max MCLKIN = 16 MHz 32 16 mA typ MCLKIN = 16 MHz 26 12 mA typ MCLKIN = 12 MHz 8 3 mA typ MCLKIN = 1 MHz IDD Idle Mode 25 mA max MCLKIN = 16 MHz 18 17 mA typ MCLKIN = 16 MHz 15 6 mA typ MCLKIN = 12 MHz 7 2 mA typ MCLKIN = 1 MHz IDD Power-Down Mode17 50 50 A max 5 5 A typ ×¢ÊÍ£º1. ¼¼Êõ¹æ¸ñÔÚУ׼ºóÊÊÓᣠ2. ζȷ¶Î§Îª-40¡æÖÁ+85¡æ¡£ 3. ÔÚMicroConverter Core£¨Î¢×ª»»Æ÷ºË£©Õý³£¹¤×÷Æڼ䱣֤ÏßÐԶȡ£ 4. ÓÉÓÚƬÄÚ³äµç±ÃµÄ¹¤×÷£¬ÔÚADCת»»ÆÚ¼äÄÚµ±±à³Ì»ò²Á³ý640×Ö½ÚÉÁËÙ/µç²Á³ý´æ´¢¿Õ¼äʱ£¬Ïß ÐԶȿÉÄܽµµÍ¡£ 5. ½öÔÚVDD=5V¡¢ÔÚÖ´ÐÐÈí¼þУ׼×Ó³ÌÐòÖ®ºó¡¢Î¶ÈΪ+25¡æµÄÌõ¼þÏ£¬ÔÚÉú²úÖвâÁ¿¡£ 6. Óû§¿ÉÄÜÐèÒªÖ´ÐÐÈí¼þУ׼×Ó³ÌÐòÒÔ´ïµ½ÕâЩ¼¼ÊõÖ¸±ê£¬ËüÃÇÓëÅäÖÃÓйء£ 7. ʧµ÷ºÍÔöÒæУ׼¼ä¸ô¶¨ÒåΪAD¦ÌC812¿ÉÒÔ²¹³¥µÄÓû§ÏµÍ³Ê§µ÷ºÍÔöÒæÎó²îµÄµçѹ·¶Î§¡£ 8. SNR¼ÆËã°üÀ¨Ê§ÕæºÍÔëÉù·ÖÁ¿¡£ 9. ζȴ«¸ÐÆ÷½«Ö±½Ó¸ø³ö¹Üоζȣ¬¿ÕÆøζȿɴӴ˽á¹ûÍƳö¡£ 10. ʹÓÃÏÂÁÐÌõ¼þ¼ÆËãÏßÐԶȣº Ëõ¼õµÄ48ÖÁ4095´ úÂ뷶Χ£¬0ÖÁVREFµçѹ·¶Î§ Ëõ¼õµÄ48ÖÁ3995´ úÂ뷶Χ£¬0ÖÁVDDµçѹ·¶Î§ DACÊä³ö¸ºÔØ=10k¦¸ºÍ50pF 11. ÉÁËÙ/µç²Á³ý´æ´¢Æ÷ÐÔÄÜÖ¸±êÈ¡µÃJEDEC Specification A103£¨Êý¾Ý±£´æ£©ºÍJEDEC Draft Specification A117£¨³ÖÐøʱ¼ä£©ÈÏÖ¤¡£ 12. ÔÚÏÂÁÐÌõ¼þϼÆËã³ÖÐøʱ¼äÖÜÆÚ£¨Endurance Cycling£©£º ģʽ=×Ö½Ú±à³Ì£¬Ò³²Á³ýÑ­»· Ñ­»·Í¼ÐÍ=00HexÖÁFFHex ²Á³ýʱ¼ä=20ms ±à³Ìʱ¼ä=100¦Ìs ==99-9-30== P&S Î人Á¦Ô´µç×ӹɷÝÓÐÏÞ¹«Ë¾ ==35-9== P&S Î人Á¦Ô´µç×ӹɷÝÓÐÏÞ¹«Ë¾ µØÖ·:ºþ±±Î人ÊÐ׿µ¶ÈªÂ·15ºÅ ÐÅÏä:Î人ÊÐ70020ÐÅÏä Óʱà:430079 µç»°:(86) (027£©87493500¡«87493506 ´«Õæ:(86) (027) 87491166, 87493497 P &SÍøÍøÖ·:http://www.p8s.com 13. ÔÚÆäËûMCLKINƵÂÊÏÂIDDͨ³£ÓÉÏÂʽ¸ø³ö£º Õý³£Ä£Ê½£¨VDD=5V£©£ºIDD=£¨1.6¡ÁMCLKIN£©+6 Õý³£Ä£Ê½£¨VDD=3V£©£ºIDD=£¨0.8¡ÁMCLKIN£©+3 ¿ÕÏÐģʽ£¨VDD=5V£©£ºIDD=£¨0.75¡ÁMCLKIN£©+6 ¿ÕÏÐģʽ£¨VDD=3V£©£ºIDD=£¨0.25¡ÁMCLKIN£©+3 ÆäÖÐMCLKINÊÇÕñµ´Æ÷µÄƵÂÊ£¨ÒÔMHz¼Æ£©£¬ËùµÃµÄIDDÖµÒÔmA¼Æ¡£ 14. IDDµçÁ÷±íʾΪÕý³£Î¢×ª»»Æ÷¹¤×÷ÆÚ¼äÄÚÄ£ÄâºÍÊý×ÖµçÔ´µçÁ÷Ö®ºÍ¡£ 15. ÔÚÉÁËÙ/µç²Á³ý´æ´¢Æ÷±à³Ì»ò²Á³ýÆÚ¼äÄÚ²»²âÁ¿IDD£»ÔÚÕâЩÆÚ¼äÄÚ£¬IDDÒ»°ãÔö¼Ó10mA¡£ 16. ÔÚÕý³£¹¤×÷Çé¿öÏ£¨ÄÚ²¿VREF£¬ADCºÍDACÍâΧÉ豸Éϵ磩ģÄâIDD=2mA£¨µäÐÍÖµ£©¡£ 17. Ôڴ˲âÁ¿ÆÚ¼äÄÚ£¬EA=Port0=DVDD£¬XTAL1£¨ÊäÈ룩Á¬½Óµ½DVDD¡£ 2.3 ¶¨Ê±²ÎÊýÓëʱÐòͼ 1£¬2£¬3 £¨AVDD=DVDD=+3.0V»ò+5.0V¡À10%¡£³ý·ÇÁíÓÐ˵Ã÷£¬ËùÓвÎÊýζȷ¶Î§¾ùΪTA=TMINÖÁTMAX£©¡£ 2.3.1 ʱÖÓÊäÈ루ÍⲿʱÖÓÇý¶¯XTAL1£© 12 MHz Variable Clock Parameter Min Typ Max Min Typ Max Units Figure CLOCK INPUT (External Clock Driven XTAL1) tCK XTAL1 Period 83.33 62.5 1000 ns 1 tCKL XTAL1 Width Low 20 20 ns 1 tCKH XTAL1 Width High 20 20 ns 1 tCKR XTAL1 Rise Time 20 20 ns 1 tCKF XTAL1 Fall Time 20 20 ns 1 tCYC 4 ADuC812 Machine Cycle Time 1 12tCK s ×¢ÊÍ£º1. ¶ÔÓÚÂß¼­1£¬²âÊÔÆÚ¼äµÄACÊäÈë±»Çý¶¯ÖÁDVDD£­0.5V£»¶ÔÓÚÂß¼­0£¬Îª0.45V¡£¶ÔÓÚÂß¼­1£¬ÔÚ VIH min´ ¦½øÐÐʱÐò²âÁ¿£»¶ÔÓÚÂß¼­0£¬ÔÚVIL max´ ¦½øÐвâÁ¿¡£ 2. ¶ÔʱÐòÀ´Ëµ£¬µ±¸ºÔصçѹ·¢Éú100mVµÄ±ä»¯Ê±£¬¶Ë¿ÚÒý½Å²»ÔÙÐü¿Õ¡£µ±¸ºÔØVOH/VOLµçƽ·¢Éú 100mVµÄ±ä»¯Ê±£¬¶Ë¿ÚÒý½Å¿ªÊ¼Ðü¿Õ¡£ 3. ³ý·ÇÁíÓÐ˵Ã÷£¬¶Ë¿Ú0 CLOAD£¬ALE£¬ PSENÊä³ö=100pF£»ËùÓÐÆäËûÊä³öCLOAD=80pF¡£ 4. AD¦ÌC812¶î¶¨»úÆ÷ÖÜÆÚ¶¨ÒåΪMCLKIN/12¡£ tCKL tCKF tCK tCKH tCKR ͼ1 XTAL1ÊäÈë VCC 0.5V 0.45V 0.2VCC + 0.9V TEST POINTS 0.2VCC 0.1V VLOAD 0.1V VLOAD VLOAD + 0.1V TIMING REFERENCE POINTS VLOAD 0.1V VLOAD VLOAD 0.1V ͼ2 ʱÐò²¨ÐÎÌØÐÔ ==99-9-30== P&S Î人Á¦Ô´µç×ӹɷÝÓÐÏÞ¹«Ë¾ ==35-10== P&S Î人Á¦Ô´µç×ӹɷÝÓÐÏÞ¹«Ë¾ µØÖ·:ºþ±±Î人ÊÐ׿µ¶ÈªÂ·15ºÅ ÐÅÏä:Î人ÊÐ70020ÐÅÏä Óʱà:430079 µç»°:(86) (027£©87493500¡«87493506 ´«Õæ:(86) (027) 87491166, 87493497 P &SÍøÍøÖ·:http://www.p8s.com 2.3.2 Íⲿ³ÌÐò´æ´¢Æ÷ 12 MHz Variable Clock Parameter Min Max Min Max Units Figure EXTERNAL PROGRAM PSEN PSEN PSEN PSEN PSEN PSEN PSEN MEMORY tLHLL ALE Pulsewidth 127 2tCK 40 ns 3 tAVLL Address Valid to ALE Low 43 tCK 40 ns 3 tLLAX Address Hold After ALE Low 53 tCK 30 ns 3 tLLIV ALE Low to Valid Instruction In 234 4tCK 100 ns 3 tLLPL ALE Low to Low 53 tCK 30 ns 3 tPLPH Pulsewidth 205 3tCK 45 ns 3 tPLIV Low to Valid Instruction In 145 3tCK 105 ns 3 tPXIX Input Instruction Hold After 0 0 ns 3 tPXIZ Input Instruction Float After 59 tCK 25 ns 3 3 tAVIV Address to Valid Instruction In 312 5tCK 105 ns 3 3 tPLAZ Low to Address Float 25 25 ns tPHAX Address Hold After High 0 0 ns MCLK ALE (O) (O) PORT 0 (I/O) PORT 2 (O) tLHLL tAVLL tLLPL tPLPH tLLIV tPLIV tPLAZ tLLAX tPXIX tPXIZ tPHAX tAVIV PCL (OUT) INSTRUCTION(IN) PCH ͼ3 Íâ²