DS80CH11 Datasheet, PDF (82/88 Pages) Dallas Semiconductor – System Energy Manager

DS80CH11
EXTERNAL CLOCK DRIVE Figure 13–6
t_CLCL
XTAL1
t_CHCL
t_CLCX
t_CHCX
t_CLCH
SERIAL PORT MODE 0 TIMING Figure 13–7
SERIAL PORT 0 (SYNCHRONOUS MODE)
HIGH SPEED OPERATION SM2=1=>TXD CLOCK=XTAL/4
ALE
PSEN
WRITE TO SBUF
RXD
DATA OUT
TXD
CLOCK
TI
WRITE TO SCON
TO CLEAR RI
RXD
DATA IN
TXD
CLOCK
RI
t_QVXH
D0
t_XHQX
D1
D2
D3
D4
D5
D6
D7
t_XLXL
D0
D1
D2
D3
D4
D5
D6
D7
t_XHDV
t_XHDX
TRANSMIT
RECEIVE
SERIAL PORT 0 (SYNCHRONOUS MODE)
SM2=0=>TXD CLOCK=XTAL/12
ALE
PSEN
RXD
DATA OUT
TXD
CLOCK
TI
RXD DATA IN
TXD CLOCK
RI
WRITE TO SBUF
1/(XTAL FREQ/12)
D0
D1
WRITE TO SCON TO CLEAR RI
D0
D1
D6
D6
D7
D7
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