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RL78/G1P
CHAPTER 11 SERIAL ARRAY UNIT
R01UH0895EJ0100 Rev.1.00
444
Nov 29, 2019
11.7.2 UART reception
UART reception is an operation wherein the RL78/G1P asynchronously receives data from another device (start-stop
synchronization).
For UART reception, the odd-number channel of the two channels used for UART is used. The SMR register of both
the odd- and even-numbered channels must be set.
UART UART0
Target channel
Channel 1 of SAU0
Pins used
RxD0
Interrupt INTSR0
Transfer end interrupt only (Setting the buffer empty interrupt is prohibited.)
Error interrupt
INTSRE0
Error detection flag
Framing error detection flag (FEFmn)
Parity error detection flag (PEFmn)
Overrun error detection flag (OVFmn)
Transfer data length
7, 8 or 9 bits
Transfer rate
Max. f
MCK
/6 [bps] (SDRmn [15:9] = 2 or more), Min. f
CLK
/(2
2
15
128) [bps]
Note
Data phase
Non-reverse output (default: high level)
Reverse output (default: low level)
Parity bit
The following selectable
No parity bit (no parity check)
No parity judgment (0 parity)
Even parity check
Odd parity check
Stop bit
1 bit check
Data direction
MSB or LSB first
Note
Use this operation within a range that satisfies the conditions above and the peripheral functions characteristics
in the electrical specifications (see
CHAPTER 27 ELECTRICAL SPECIFICATIONS
).
Remarks 1.
f
MCK
: Operation clock frequency of target channel
f
CLK
: System clock frequency
2.
m: Unit number (m = 0), n: Channel number (n = 1), mn = 01
Summary of Contents for RL78/G1P
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