M30622SAFP MITSUBISHI [Mitsubishi Electric Semiconductor], M30622SAFP Datasheet - Page 122

• Manufacturer Part Number: M30622SAFP
• Description: SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
• Manufacturer: MITSUBISHI [Mitsubishi Electric Semiconductor]

Clock synchronous serial I/O mode
122
Figure 1.16.14. The transfer clock output from the multiple pins function usage
Figure 1.16.15. Serial data logic switch timing
(c) Transfer clock output from multiple pins function (UART1)
(d) Continuous receive mode
(e) Serial data logic switch function (UART2)
This function allows the setting two transfer clock output pins and choosing one of the two to output a
clock by using the CLK and CLKS select bit (bits 4 and 5 at address 03B0
The multiple pins function is valid only when the internal clock is selected for UART1. Note that when
this function is selected, UART1 CTS/RTS function cannot be used.
If the continuous receive mode enable bit (bits 2 and 3 at address 03B0
set to “1”, the unit is placed in continuous receive mode. In this mode, when the receive buffer register
is read out, the unit simultaneously goes to a receive enable state without having to set dummy data to
the transmit buffer register back again.
When the data logic select bit (bit6 at address 037D
reading from receive buffer register, data is reversed. Figure 1.16.15 shows the example of serial data
logic switch timing.
•When LSB first
Transfer clock
(no reverse)
Note: This applies when the internal clock is selected and transmission
(reverse)
Microcomputer
TxD
TxD
is performed only in clock synchronous serial I/O mode.
CLKS
2
2
CLK
T
X
“H”
“H”
“H”
D
“L”
“L”
“L”
1
1
1
(P6
(P6
(P6
7
4
5
)
)
)
D0
D0
_______ _______
D1
D1
D2
D2
IN
CLK
D3
D3
16
D4
D4
) = “1”, and writing to transmit buffer register or
D5
D5
D6
D6
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
IN
CLK
D7
D7
16
, bit 5 at address 037D
16
). (See Figure 1.16.14.)
M16C / 62A Group
Mitsubishi microcomputers
16
) is