upd78f0103hmca1-5a4-a Renesas Electronics Corporation., upd78f0103hmca1-5a4-a Datasheet - Page 252
upd78f0103hmca1-5a4-a
Manufacturer Part Number
upd78f0103hmca1-5a4-a
Description
8-bit Single-chip Microcontrollers
Manufacturer
Renesas Electronics Corporation.
Datasheet
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R
Remark T
X
D6/P14
(g) Noise filter of receive data
(h) SBF transmission
INTST6
SBTT6
The RxD6 signal is sampled with the base clock output by the prescaler block.
If two sampled values are the same, the output of the match detector changes, and the data is sampled as
input data.
Because the circuit is configured as shown in Figure 12-21, the internal processing of the reception operation
is delayed by two clocks from the external signal status.
When the device is incorporated in LIN, the SBF (Synchronous Break Field) transmission control function is
used for transmission.
Operation.
The T
(ASIM6) is set to 1. Transmission is enabled when bit 6 (TXE6) of ASIM6 is set to 1 next time, and SBF
transmission operation is started when bit 5 (SBTT6) of asynchronous serial interface control register 6
(ASICL6) is set to 1.
After transmission has been started, the low levels of bits 13 to 20 (set by bits 4 to 2 (SBL62 to SBL60) of
ASICL6) are output. When SBF is complete, a transmission completion interrupt request (INTST6) is issued,
and SBTT6 is automatically cleared. After SBF transmission is completed, the normal transmission mode is
restored.
SBF transmission is stopped until the data to be transmitted next is written to transmit buffer register 6
(TXB6) or SBTT6 is set to 1.
T
Base clock
X
D6
INTST6: Transmission completion interrupt request
SBTT6: Bit 5 of asynchronous serial interface control register 6 (ASICL6)
X
X
D6:
D6 pin outputs a high level when bit 7 (POWER6) of asynchronous serial interface mode register 6
T
X
D6 pin (output)
1
2
In
For the transmission operation of LIN, see Figure 12-1
3
CHAPTER 12 SERIAL INTERFACE UART6
Figure 12-21. Noise Filter Circuit
Figure 12-22. SBF Transmission
4
Q
User’s Manual U16846EJ3V0UD
5
6
Internal signal A
Match detector
7
8
9
10
11
In
LD_EN
12
13
Q
Stop
LIN Transmission
Internal signal B
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