M30222 Datasheet, PDF (105/237 Pages) Mitsubishi Electric Semiconductor – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

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Specifications in this manual are tentative and subject to change
MITSUBISHI MICROCOMPUTERS
M30222 Group
Rev. G
Serial Communications
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
(UART0)
RxD0
Clock source selection
f1
f8
Bit rate generator
Internal _{(address 03A116)}
f32
1 / (n0+1)
External
UART reception
1/16
Clock synchronous type
Reception
control circuit
UART transmission
1/16
Clock synchronous type
Transmission
control circuit
Clock synchronous type
(when internal clock is selected)
1/2
CLK0
CTS0 / RTS0
Clock synchronous type
(when internal clock is selected)
CLK
polarity
reversing
circuit
CTS/RTS disabled
CTS/RTS selected
Vcc
CTS/RTS disabled
CTS/RTS separated
Clock synchronous type
(when external clock is
selected)
RTS0
CTS0
CTS0 from UART1
Receive
clock
Transmit
clock
Transmit/
receive
unit
(UART1)
RxD1
Clock source selection
f1
Bit rate generator
f8
Internal (address 03A916)
f32
1 / (n1+1)
External
UART reception
1/16
Clock synchronous type
Reception
control circuit
UART transmission
1/16
Clock synchronous type
Clock synchronous type
(when internal clock is selected)
1/2
receive
Transmission
control circuit
CLK1
CTS1 / RTS1
/ CTS0 / CLKS1
CLK
polarity
reversing
circuit
Clock synchronous type
(when internal clock is selected)
Clock synchronous type
(when external clock is
selected)
CTS/RTS disabled
CTS/RTS separated
Clock output pin
select switch
VCC
CTS/RTS disabled
RTS1
CTS1
Receive
clock
Transmit
clock
Transmit/
receive
unit
(UART2)
RxD2
RxD polarity
reversing circuit
Clock source selection
f1
Internal
f8
f32
Bit rate generator
(address 037916)
1 / (n2+1)
External
CTS0
CTS0 to UART0
UART reception
1/16
Clock synchronous type
Reception
control circuit
UART transmission
1/16
Clock synchronous type
Transmission
control circuit
Clock synchronous type
(when internal clock is selected)
1/2
Receive
clock
Transmit
clock
Transmit/
unit
TxD
polarity
reversing
circuit
CLK2
CTS2 / RTS2
CLK
polarity
reversing
circuit
Clock synchronous type
(when internal clock is selected)
CTS/RTS _{CTS/RTS disabled}
selected
Clock synchronous type
(when external clock is
selected)
RTS2
Vcc
CTS/RTS disabled
CTS2
n0 : Values set to UART0 bit rate generator (BRG0)
n1 : Values set to UART1 bit rate generator (BRG1)
n2 : Values set to UART2 bit rate generator (BRG2)
TxD0
TxD1
TxD2
Fig. 1.78. Block diagram of UARTi (i= 0 to 2)
1-106