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M16C/29 bảng dữ liệu(PDF) 217 Page - Renesas Technology Corp

tên linh kiện M16C/29
Giải thích chi tiết về linh kiện  RENESAS MCU M16C FAMILY / M16C/Tiny SERIES
PDF  499 Pages
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nhà sản xuất  RENESAS [Renesas Technology Corp]
Trang chủ  http://www.renesas.com
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14. Serial I/O
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(1) When the UFORM bit in the UiC0 register is set to 0 (LSB first)
(2) When the UFORM bit in the UiC0 register is set to 1 (MSB first)
NOTE:
1. This applies to the case where the CKPOL bit in the UiC0 register is set to 0 (transmit data output at the
falling edge and the receive data taken in at the rising edge of the transfer clock), the UiLCH bit in the UiC1
register is set to 0 (no reverse), the STPS bit in the UiMR register is set to 0 (1 stop bit) and the PRYE bit in
the UiMR register is set to 1 (parity enabled).
D1
D2
D3
D4
D5
D6
SP
D0
D1
D2
D3
D4
D5
D6
SP
D0
TXDi
RXDi
CLKi
D6
D5
D4
D3
D2
D1
D0
D7
TXDi
RXDi
CLKi
ST
ST
D7
P
D7
P
SP
SP
ST
ST
P
P
D6
D5
D4
D3
D2
D1
D0
D7
ST : Start bit
P : Parity bit
SP : Stop bit
i = 0 to 2
14.1.2.2 Counter Measure for Communication Error
If a communication error occurs while transmitting or receiving in UART mode, follow the procedure
below.
• Resetting the UiRB register (i=0 to 2)
(1) Set the RE bit in the UiC1 register to 0 (reception disabled)
(2) Set the RE bit in the UiC1 register to 1 (reception enabled)
• Resetting the UiTB register (i=0 to 2)
(1) Set bits SMD2 to SMD0 in UiMR register 0002 (Serial I/O disabled)
(2) Set bits SMD2 to SMD0 in UiMR register 0012, 1012, 1102
(3) 1 is written to TE bit in the UiC1 register (reception enabled), regardless of the TE bit
14.1.2.3 LSB First/MSB First Select Function
As shown in Figure 14.18, use the UFORM bit in the UiC0 register to select the transfer format. This
function is valid when transfer data is 8 bits long.
Figure 14.18 Transfer Format



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