Microcomputer User's Manual

Chapter 10 Appendices
151
Summary of Special Function Registers
Bit Symbol
Address
Register
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
X’3F52’
X’3F50’
X’3F51’
X’3F46’
X’3F47’
X’3F48’
X’3F4A’
X’3F4B’
X’3F4C’
X’3F53’
X’3F54’
X’3F55’
X’3F56’
X’3F57’
X’3F58’






SC0RXB
SC0TRB
Disables to use
SC0MD2
SC0MD0
SC0MD1
SC0MD3
SC0CTR
SC0CKM
SC0RXB7 SC0RXB6 SC0RXB5 SC0RXB4
SC0RXB3 SC0RXB2 SC0RXB1
SC0RXB0

Disables to use
SC0CK1
SC0CK0 SC0BRKF SC0ERE SC0TRI
Select 1/8 period
of freq.

SC0IOM
SC0SBOM SC0SBTM SC0SBOS SC0SBIS SC0SBTS
SC0RXB4SC0RXB5SC0BSY SC0ORESC0PEKSC0FEFSC0CMD
SC0TRB7 SC0TRB5 SC0TRB4 SC0TRB3
SC0TRB2 SC0TRB1 SC0TRB0
SC0TRB6
Receive data input edge
Transmit data output edge
Start bit set up
for transmit
Transfer bit count
Select sync.
seroal UART
Status of 
serial bus
Synchrounou serial
start edition select
SC0BRKE SC0FM1 SC0FM0 SC0PM1 SC0PM0 SC0NPE
SC0LNG2SC0CE0 SC0CE1 SC0DIR SC0LNG1 SC0LNG0
SC0STE
Port 6 pull-up resistor ON/OFF control
Port pull-up pull down
resistor ON/OFF control
P8PLU7 P8PLU6 P8PLU5 P8PLU4 P8PLU3 P8PLU2 P8PLU1 P8PLU0
PAPLUD5 PAPLUD4 PAPLUD3 PAPLUD2 PAPLUD1 PAPLUD0
Port 8 pull-up resistor ON/OFF control
P7PLUD0
P6PLU7 P6PLU5 P6PLU6
P6PLU4
P6PLU3 P6PLU2 P6PLU1
P6PLU0
P6PLU
P7PLUD
P8PLU
PAPLUD
FLOAT1
Disables to use
P21M






P7RDWN
PARDWNP21M


Clock source selection
Break status
rec. monitor
Error monitor
Trans/rec interrup
request flag
Control break
status trans.
Specifies frame mode
Specifies added bit
Enables 
parity
Detect framing 
error
Detect parity 
error
Detect overrun
error
Serial interface 0 transmit/receive shift register
Serial interface 0 receive data buffer
Port A pull-up pull-down resistor ON/OFF control
SBO0pin
selection
SBI0/SBO0
pin connection
SelectSBT
pin format
SelectSBO
pin function


Reference
Page
42，45
42，45
42，45
42，45
42，46
108
109
110

111
112
107
107
ControlSBI
input
SelectSBT0
pin function
P21input
mode selection
Port A pullp ﾟ
pulldown sel.
Port 7 pullup ﾟ
pulldown sel.

X’3F42’
X’3F43’
X’3F44’
X’3F45’
P2PLU
Disables to use
Disables to use
Disables to use
P2PLU2 P2PLU1 P2PLU0
Port 2 pull-up resistor ON/OFF control
42，45
PAPLUD6PAPLUD7