MC68HC08AZ16 Datasheet, PDF (203/527 Pages) Motorola, Inc – HCMOS Microcontroller Unit

Serial Communications Interface Module (SCI)
NORMAL FLAG CLEARING SEQUENCE
BYTE 1
READ SCS1
SCRF = 1
OR = 0
READ SCDR
(BYTE 1)
BYTE 2
READ SCS1
SCRF = 1
OR = 0
READ SCDR
(BYTE 2)
BYTE 3
BYTE 4
READ SCS1
SCRF = 1
OR = 0
READ SCDR
(BYTE 3)
DELAYED FLAG CLEARING SEQUENCE
BYTE 1
BYTE 2
READ SCS1
SCRF = 1
OR = 0
READ SCDR
(BYTE 1)
BYTE 3
BYTE 4
READ SCS1
SCRF = 1
OR = 1
READ SCDR
(BYTE 3)
Figure 9. Flag clearing sequence
MC68HC08AZ32
202
Serial Communications Interface Module (SCI)
34-sci
MOTOROLA