611
Chapter 15
Asynchronous Serial Interface C (UARTC)
User’s Manual U16580EE3V1UD00
(11) UARTCn transmit data register (UCnTX)
The UCnTX register is an 8-bit transmit data buffer. Transmission starts when transmit data is
written to the UCnTX register. When data can be written to the UCnTX register (when data of one
frame is transferred from the UCnTX register to the UARTCn transmit shift register), the
transmission enable interrupt (INUCnT) is generated.
Figure 15-1:
Block Diagram of Asynchronous Serial Interface n
Remarks: 1.
n = 0, 1
2.
f
XX
: Internal system clock
Internal bus
Internal bus
UCnOTP0
UCnOTP1
UCnCTL0
UCnSTR
UCnSTR1
UCnCTL1
UCnCTL2
Receive
shift register
UCnRX
Filter
Selector
UCnTX
Transmit
shift register
Transmission
controller
Reception
controller
Selector
Baud rate
generator
Baud rate
generator
INTUCnRE
INTUCnR
INTUCnT
TXDCn
RXDCn
f
/2
XX
f
/4
XX
f
/8
XX
f
/32
XX
f
/128
XX
f
/64
XX
f
/256
XX
f
/1024
XX
f
/512
XX
f
/2048
XX
f
/8192
XX
f
/16
XX
Reception unit
Transmission
unit
Cloc
k
selector
Summary of Contents for MuPD70F3187
Page 6: ...6 Preface User s Manual U16580EE3V1UD00 ...
Page 16: ...16 User s Manual U16580EE3V1UD00 ...
Page 28: ...28 User s Manual U16580EE3V1UD00 ...
Page 32: ...32 User s Manual U16580EE3V1UD00 ...
Page 84: ...84 Chapter 2 Pin Functions User s Manual U16580EE3V1UD00 MEMO ...
Page 144: ...144 Chapter 3 CPU Functions User s Manual U16580EE3V1UD00 MEMO ...
Page 312: ...312 Chapter 9 16 Bit Timer Event Counter P User s Manual U16580EE3V1UD00 MEMO ...
Page 534: ...534 Chapter 11 16 bit Timer Event Counter T User s Manual U16580EE3V1UD00 ...
Page 969: ...969 Chapter 20 Port Functions User s Manual U16580EE3V1UD00 MEMO ...
Page 970: ...970 Chapter 20 Port Functions User s Manual U16580EE3V1UD00 ...
Page 976: ...976 Chapter 22 Internal RAM Parity Check Function User s Manual U16580EE3V1UD00 MEMO ...
Page 984: ...984 Chapter 23 On Chip Debug Function OCD User s Manual U16580EE3V1UD00 MEMO ...
Page 1006: ...1006 Chapter 24 Flash Memory User s Manual U16580EE3V1UD00 MEMO ...
Page 1036: ...1036 Chapter 27 Recommended Soldering Conditions User s Manual U16580EE3V1UD00 MEMO ...
Page 1046: ...1046 Appendix A Index User s Manual U16580EE3V1UD00 MEMO ...
Page 1052: ...1052 User s Manual U16580EE3V1UD00 ...
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