18 UART
S1C17001 TECHNICAL MANUAL
EPSON
231
18.10 Precautions
• Change the UART settings only while transfers are blocked (RXEN = 0).
∗
RXEN
: UART Enable Bit in the UART Control (UART_CTL) Register (D0/0x4104)
• Do not set RXEN to 0 while the UART is transmitting or receiving data.
• The UART transfer rate is capped at 460,800 bps (115,200 bps in IrDA mode). Do not set faster transfer rates.
• Preventing transfer by setting RXEN to 0 clears (initializes) transfer data buffers. Before writing 0 to RXEN,
confirm the absence of data in the buffers awaiting transmission or reading.
• The IrDA receive detection clock must be selected as a clock faster than the 8-bit timer or transfer clock sclk in-
put via the SCLK pin.
• The IrDA interface demodulation circuit treats Low pulses with a width of at least 2 IrDA receive detection clock
cycles as valid. Select the appropriate prescaler output clock to enable detection of input pulses with a minimum
width of 1.41
μ
s as a 2 IrDA receive detection clock.
Содержание S1C17001
Страница 1: ...Technical Manual S1C17001 CMOS 16 BIT SINGLE CHIP MICROCONTROLLER ...
Страница 31: ...3 MEMORY MAP AND BUS CONTROL 22 EPSON S1C17001 TECHNICAL MANUAL This page intentionally left blank ...
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Страница 87: ...8 CLOCK GENERATOR CLG 78 EPSON S1C17001 TECHNICAL MANUAL This page intentionally left blank ...
Страница 91: ...9 PRESCALER PSC 82 EPSON S1C17001 TECHNICAL MANUAL This page intentionally left blank ...
Страница 133: ...11 16 BIT TIMER T16 124 EPSON S1C17001 TECHNICAL MANUAL This page intentionally left blank ...
Страница 185: ...14 8 BIT OSC1 TIMER T8OSC1 176 EPSON S1C17001 TECHNICAL MANUAL This page intentionally left blank ...
Страница 211: ...16 STOPWATCH TIMER SWT 202 EPSON S1C17001 TECHNICAL MANUAL This page intentionally left blank ...
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Страница 241: ...18 UART 232 EPSON S1C17001 TECHNICAL MANUAL This page intentionally left blank ...
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Страница 303: ...22 ON CHIP DEBUGGER DBG 294 EPSON S1C17001 TECHNICAL MANUAL This page intentionally left blank ...
Страница 313: ...25 PACKAGE 304 EPSON S1C17001 TECHNICAL MANUAL This page intentionally left blank ...