Z86C9116PSG Datasheet, PDF (16/56 Pages) Zilog, Inc. – CMOS Z8 ROMLess Microcontrollers

=&
&026 =^Š 520/HVV 0LFURFRQWUROOHUV

3LQ )XQFWLRQV
7KH IROORZLQJ SDUDJUDSKV GHVFULEH WKH IXQFWLRQ RI HDFK DYDLODEOH =& SLQ
'6 RXWSXW DFWLYH /RZ 7KH 'DWD 6WUREH LV DFWLYDWHG RQH WLPH IRU HDFK H[WHUQDO PHPRU\
WUDQVIHU )RU D 5($' RSHUDWLRQ GDWD PXVW EH DYDLODEOH SULRU WR WKH WUDLOLQJ HGJH RI '6
)RU :5,7( RSHUDWLRQV WKH IDOOLQJ HGJH RI '6 LQGLFDWHV WKDW RXWSXW GDWD LV YDOLG
$6 RXWSXW DFWLYH /RZ 7KH $GGUHVV 6WUREH LV SXOVHG RQH WLPH DW WKH EHJLQQLQJ RI HDFK
PDFKLQH F\FOH IRU H[WHUQDO PHPRU\ WUDQVIHU $GGUHVV RXWSXW LV WKURXJK 3RUW  IRU DOO H[WHU
QDO SURJUDPV 0HPRU\ DGGUHVV WUDQVIHUV DUH YDOLG DW WKH WUDLOLQJ HGJH RI $6 8QGHU SUR
JUDP FRQWURO $6 LV SODFHG LQ WKH KLJKLPSHGDQFH VWDWH DORQJ ZLWK 3RUWV  DQG  'DWD
6WUREH DQG 5($':5,7(
;7$/ &U\VWDO 7LPH%DVHG 2VFLOODWRU ,QSXW 7KLV SLQ FRQQHFWV D SDUDOOHOUHVRQDQW FU\V
WDO FHUDPLF UHVRQDWRU /& QHWZRUN RU DQ H[WHUQDO VLQJOHSKDVH FORFN WR WKH RQFKLS RVFLO
ODWRUDQG EXIIHU
;7$/ &U\VWDO  7LPH%DVHG 2VFLOODWRU 2XWSXW 7KLV SLQ FRQQHFWV D SDUDOOHOUHVRQDQW
FU\VWDO FHUDPLF UHVRQDQW /& QHWZRUN WR WKH RQFKLS RVFLOODWRU DQG EXIIHU
5: RXWSXW :5,7( /RZ 7KH 5($':5,7( VLJQDO LV /RZ ZKHQ WKH = ZULWHV WR
H[WHUQDO GDWD PHPRU\
5(6(7 LQSXW /RZ 7R DYRLG DV\QFKURQRXV DQG QRLV\ UHVHW SUREOHPV WKH = LV HTXLSSHG
ZLWK D UHVHW ILOWHU RI IRXU H[WHUQDO ;7$/ FORFNV 7S& ,I WKH H[WHUQDO 5(6(7 VLJQDO LV
OHVV WKDQ 7S& LQ GXUDWLRQ UHVHW GRHV QRW RFFXU
2Q WKH ILIWK FORFN DIWHU 5(6(7 LV GHWHFWHG DQ LQWHUQDO 567 VLJQDO LV ODWFKHG DQG KHOG IRU
DQ LQWHUQDO UHJLVWHU FRXQW RI  H[WHUQDO FORFNV RU IRU WKH GXUDWLRQ RI WKH H[WHUQDO 5(6(7
ZKLFKHYHU LV ORQJHU 'XULQJ WKH UHVHW F\FOH '6 LV KHOG DFWLYH /RZ ZKLOH $6 F\FOHV DW D
UDWH RI 7S& :KHQ 5(6(7 LV GHDFWLYDWHG SURJUDP H[HFXWLRQ EHJLQV DW ORFDWLRQ 000CK
3RZHU8S UHVHW WLPH PXVW EH KHOG /RZ IRU  PV RU XQWLO 9 LV VWDEOH ZKLFKHYHU LV
88
ORQJHU
3RUW  3±3 3RUW  LV DQ ELW QLEEOH SURJUDPPDEOH ELGLUHFWLRQDO 77/FRPSDWLEOH
SRUW 7KHVH HLJKW ,2 OLQHV DUH FRQILJXUHG XQGHU VRIWZDUH FRQWURO DV D QLEEOH ,2 SRUW
3±3 LQSXWRXWSXW DQG 3±3 LQSXWRXWSXW RU DV DQ DGGUHVV SRUW IRU LQWHUIDFLQJ
H[WHUQDO PHPRU\ :KHQ XVHG DV DQ ,2 SRUW 3RUW  PD\ EH SODFHG XQGHU KDQGVKDNH FRQ
WURO ,Q WKLV FRQILJXUDWLRQ 3RUW  OLQHV 3 DQG 3 DUH XVHG DV WKH KDQGVKDNH FRQWURO
'$9 DQG 5'< +DQGVKDNH VLJQDO GLUHFWLRQ LV GLFWDWHG E\ WKH ,2 GLUHFWLRQ LQSXW RU
RXWSXW RI 3RUW  RI WKH XSSHU QLEEOH 3±3 7KH ORZHU QLEEOH PXVW LQGLFDWH WKH VDPH
GLUHFWLRQ DV WKH XSSHU QLEEOH
)RU H[WHUQDO PHPRU\ UHIHUHQFHV 3RUW  SURYLGHV DGGUHVV ELWV $±$ ORZHU QLEEOH DQG
3RUW  SURYLGHV DGGUHVV ELWV $±$ XSSHU QLEEOH GHSHQGLQJ RQ WKH UHTXLUHG DGGUHVV
VSDFH ,I WKH DGGUHVV UDQJH UHTXLUHV  ELWV RU OHVV WKH XSSHU QLEEOH RI 3RUW  LV SUR
JUDPPHG LQGHSHQGHQWO\ DV ,2 ZKLOH WKH ORZHU QLEEOH LV XVHG IRU DGGUHVVLQJ ,I RQH RU
36
3LQ )XQFWLRQV