
ML610Q421/ML610Q422/ML610421 User’s Manual
Chapter 14 UART
14 – 10
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U0FUL
(bit 3)
The U0FUL bit is used to indicate the state of the transmit/receive buffer of the UART.
When transmit data is written in UA0BUF in transmit mode, this bit is set to “1” and when transmit data is
transferred to the shift register, this bit is set to “0”. To transmit data consecutively, write the next transmit data to
UA0BUF after checking that the U0FUL flag has been set to “0”.
The U0FUL bit is fixed to “0” in receive mode.
U0FUL
Description
0
There is no data in the transmit/receive buffer. (Initial value)
1
There is data in the transmit/receive buffer.
Summary of Contents for ML610421
Page 1: ...ML610Q421 ML610Q422 ML610421 User s Manual Issue Date Feb 9 2015 FEUL610Q421 06...
Page 15: ...Chapter 1 Overview...
Page 44: ...Chapter 2 CPU and Memory Space...
Page 49: ...Chapter 3 Reset Function...
Page 53: ...Chapter 4 MCU Control Function...
Page 69: ...Chapter 5 Interrupts INTs...
Page 93: ...Chapter 6 Clock Generation Circuit...
Page 110: ...Chapter 7 Time Base Counter...
Page 121: ...Chapter 8 Capture...
Page 129: ...Chapter 9 1 kHz Timer 1kHzTM...
Page 135: ...Chapter 10 Timers...
Page 160: ...Chapter 11 PWM...
Page 172: ...Chapter 12 Watchdog Timer...
Page 180: ...Chapter 13 Synchronous Serial Port...
Page 195: ...Chapter 14 UART...
Page 216: ...Chapter 15 I2 C Bus Interface...
Page 231: ...Chapter 16 NMI Pin...
Page 237: ...Chapter 17 Port 0...
Page 246: ...Chapter 18 Port 1...
Page 252: ...Chapter 19 Port 2...
Page 259: ...Chapter 20 Port 3...
Page 270: ...Chapter 21 Port 4...
Page 282: ...Chapter 22 Port A...
Page 290: ...Chapter 23 Melody Driver...
Page 304: ...Chapter 24 RC Oscillation Type A D Converter...
Page 327: ...Chapter 25 Successive Approximation Type A D Converter...
Page 338: ...Chapter 26 LCD Drivers...
Page 371: ...Chapter 27 Battery Level Detector...
Page 378: ...Chapter 28 Power Supply Circuit...
Page 381: ...Chapter 29 On Chip Debug Function...
Page 384: ...Appendixes...
Page 435: ...Revision History...