Z85230 Datasheet, PDF (94/120 Pages) Zilog, Inc. – ENHANCED SERIAL COMMUNICATIONS CONTROLLER

==
(QKDQFHG 6HULDO &RPPXQLFDWLRQV &RQWUROOHU

7DEOH  = $& &KDUDFWHULVWLFV
 0+]
 0+]
1R 6\PERO
3DUDPHWHU
0LQ 0D[ 0LQ 0D[
1RWHV
 7K$$6
$GGUHVV WR $6 5LVH +ROG 7LPH


 
 7V':'6 :ULWH 'DWD WR '6 )DOO 6HWXS 7LPH 


 7K':'6 :ULWH 'DWD WR '6 5LVH +ROG 7LPH 


 7G'6'$ '6 )DOO WR 'DWD $FWLYH 'HOD\



 7G'6U'5 '6 5LVH WR 5HDG 'DWD 1RW 9DOLG

'HOD\


 7G'6I'5 '6 )DOO WR 'DWD $FWLYH 'HOD\

 
 7G$6'5 $6 5LVH WR 5HDG 'DWD 9DOLG 'HOD\

 
 7G'6'5] '6 5LVH WR 5HDG 'DWD )ORDW
'HOD\

  
 7G$'5 $GGUHVV 5HTXLUHG 9DOLG WR 5HDG


'DWD 9DOLG 'HOD\
 7G'6: '6 )DOO WR :DLW 9DOLG 'HOD\

  
 7G'6I5(4 '6 )DOO WR :5(4 1RW 9DOLG
'HOD\

 
 7G'6U5(4 '6 )DOO WR '755(4 1RW 9DOLG

'HOD\

 7G$6,17 $6 5LVH WR ,17 9DOLG 'HOD\


1RWHV
 3DUDPHWHU GRHV QRW DSSO\ WR ,QWHUUXSW $FNQRZOHGJH WUDQVDFWLRQV
 3DUDPHWHU DSSOLHV RQO\ EHWZHHQ WUDQVDFWLRQV LQYROYLQJ WKH (6&&
 )ORDW GHOD\ LV GHILQHG DV WKH WLPH UHTXLUHG IRU D “9 FKDQJH LQ WKH RXWSXW ZLWK D PD[LPXP '& ORDG
DQG D PLQLPXP $& ORDG
 2SHQGUDLQ RXWSXW PHDVXUHG ZLWK RSHQGUDLQ WHVW ORDG
 3DUDPHWHU LV V\VWHPGHSHQGHQW )RU DQ\ =L/2* (6&& LQ WKH GDLV\ FKDLQ 7G$6'6$ PXVW EH
JUHDWHU WKDQ WKH VXP RI 7G$6,(2 IRU WKH KLJKHVW SULRULW\ GHYLFH LQ WKH GDLV\ FKDLQ 7V,(,'6$ IRU
WKH =L/2* (6&& DQG 7G,(,,(2 IRU HDFK GHYLFH VHSDUDWLQJ WKHP LQ WKH GDLV\ FKDLQ
 3DUDPHWHU DSSOLHV RQO\ WR D =L/2* (6&& SXOOLQJ ,17 /RZ DW WKH EHJLQQLQJ RI WKH ,QWHUUXSW
$FNQRZOHGJH WUDQVDFWLRQ
 ,QWHUQDO FLUFXLWU\ DOORZV IRU WKH UHVHW SURYLGHG E\ WKH = WR EH UHFRJQL]HG DV D UHVHW E\ WKH =(6&&
$OO WLPLQJ UHIHUHQFHV DVVXPH 9 IRU D  DQG 9 IRU D ORJLF 
 8QLWV LQ QDQRVHFRQGV QV
 8QLWV LQ7F3F
36
$& &KDUDFWHULVWLFV