M38062M3-156FP MITSUBISHI [Mitsubishi Electric Semiconductor], M38062M3-156FP Datasheet - Page 22

• Manufacturer Part Number: M38062M3-156FP
• Description: SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
• Manufacturer: MITSUBISHI [Mitsubishi Electric Semiconductor]

Fig. 14 Structure of serial I/O control registers
22
b7
b7
b0
b0
Serial I/O1 status register
(SIO1STS : address 0019
UART control register
(UARTCON : address 001B
Transmit buffer empty flag (TBE)
0: Buffer full
1: Buffer empty
Receive buffer full flag (RBF)
0: Buffer empty
1: Buffer full
Transmit shift completion flag (TSC)
0: Transmit shift in progress
1: Transmit shift completed
Overrun error flag (OE)
0: No error
1: Overrun error
Parity error flag (PE)
0: No error
1: Parity error
Framing error flag (FE)
0: No error
1: Framing error
Summing error flag (SE)
0: (OE) U (PE) U (FE)=0
1: (OE) U (PE) U (FE)=1
Not used (returns "1" when read)
Character length selection bit (CHAS)
0: 8 bits
1: 7 bits
Parity enable bit (PARE)
0: Parity checking disabled
1: Parity checking enabled
Parity selection bit (PARS)
0: Even parity
1: Odd parity
Stop bit length selection bit (STPS)
0: 1 stop bit
1: 2 stop bits
P4
0: CMOS output (in output mode)
1: N-channel open drain output (in output mode)
Not used (return "1" when read)
5
/T
X
D P-channel output disable bit (POFF)
16
)
16
)
b7
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
b0
Serial I/O1 control register
(SIO1CON : address 001A
BRG count source selection bit (CSS)
0: f(X
1: f(X
Serial I/O1 synchronous clock selection bit (SCS)
0: BRG output divided by 4 when clock synchronous
1: External clock input when clock synchronous serial
S
0: P4
1: P4
Transmit interrupt source selection bit (TIC)
0: Interrupt when transmit buffer has emptied
1: Interrupt when transmit shift operation is completed
Transmit enable bit (TE)
0: Transmit disabled
1: Transmit enabled
Receive enable bit (RE)
0: Receive disabled
1: Receive enabled
Serial I/O1 mode selection bit (SIOM)
0: Clock asynchronous (UART) serial I/O
1: Clock synchronous serial I/O
Serial I/O enable bit (SIOE)
0: Serial I/O disabled
1: Serial I/O enabled
RDY1
(pins P4
(pins P4
serial I/O is selected, BRG output divided by 16
when UART is selected.
I/O is selected, external clock input divided by 16
when UART is selected.
MITSUBISHI MICROCOMPUTERS
7
7
IN
IN
output enable bit (SRDY)
pin operates as ordinaly I/O pin
pin operates as S
)
)/4
4
4
to P4
to P4
7
7
operate as ordinary I/O pins)
operate as serial I/O pins)
16
RDY1
)
3806 Group
output pin