642
Chapter 15
Asynchronous Serial Interface C (UARTC)
User’s Manual U16580EE3V1UD00
15.6.5 Allowable baud rate range during reception
The baud rate error range at the destination that is allowable during reception is shown below.
Caution:
The baud rate error during reception must be set within the allowable error range
using the following equation.
Figure 15-22:
Allowable Baud Rate Range During Reception
Remark:
n = 0 to 2
As shown in Figure 15-22, the receive data latch timing is determined by the counter set using the
UCnCTL2 register following start bit detection. The transmit data can be normally received if up to the
last data (stop bit) can be received in time for this latch timing.
When this is applied to 11-bit reception, the following results in terms of logic.
FL = (BR)
-1
BR:
UARTCn baud rate (n = 0, 1)
k:
UCnCTL2 setting value (n = 0, 1)
FL:
1-bit data length
Latch timing margin: 2 clocks
Minimum allowable transfer rate:
FL
1 data frame (11
FL)
×
FLmin
FLmax
UARTCn
transfer rate
Start bit
Bit 0
Bit 1
Bit 7
Parity bit
Minimum
allowable
transfer rate
Maximum
allowable
transfer rate
Stop bit
Start bit
Bit 0
Bit 1
Bit 7
Parity bit
Latch timing
Stop bit
Start bit
Bit 0
Bit 1
Bit 7
Parity bit
Stop bit
FLmin = 11
×
FL -
×
FL = FL
k - 2
21k + 2
2k
2k
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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