PB=0
PB=1
PB=0
PB=1
PB=0
PB=1
PB=0
PB=0
DR/DT=0 DR/DT=0
DR/DT=1
DR/DT=0
DR/DT=1
DR/DT=0
DR/DT=1 DR/DT=0
SDEN1 or
SDEN0
SCLK
SDATA
Poll SSS for
PB=0
Poll SSS for
PB=0
Poll SSS for
PB=0
Write to SSD
Write to SSC,
bit DE=1
Write to SSD
Write to SSD
Write to SSC, bit
DE=0
Figure 14. Synchronous Serial Interface Multiple Write
PB=0
PB=0
PB=1
PB=1
PB=0
PB=0
PB=1
PB=0
DR/DT=0
DR/DT=1
DR/DT=0
DR/DT=0
DR/DT=1
DR/DT=0
DR/DT=0
DR/DT=1
SDEN1 or
SDEN0
SCLK
SDATA
Poll SSS for
PB=0
Poll SSS for
PB=0
Poll SSS for
PB=0
Write to SSD
Read from SSR
(dummy)
Read from
SSR
Write to SSC,
bit DE=0
Read from SSR
Write to SSC,
bit DE=1
Figure 15. Synchronous Serial Interface Multiple Read
58
Am186TMER and Am188TMER Microcontrollers Data Sheet