Fujitsu F2MC-8FX Hardware Manual page 359

F2mc-8fx 8-bit microcontroller
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The baud rate in clock asynchronous mode can be set in the following range.
Table 20.7-3 Baud Rate Setting Range in Clock Asynchronous Mode
PSS[1:0]
"0, 0" to "1, 1"
Transfer data format
UART can treat data only in NRZ (Non-Return-to-Zero) format. Figure 20.7-2 shows the data format.
The character bit length can be selected from among 5 to 8 bits depending on the CBL1 and CBL0 settings.
The stop bit length can be set to 1 or 2 bits depending on the SBL setting.
PEN and TDP can be used to enable/disable parity and to select parity polarity.
As shown in Figure 20.7-2, the transfer data always starts from the start bit ("L" level) and ends with the
stop bit ("H" level) by performing the specified data bit length transfer with MSB or LSB first ("LSB first"
or "MSB first" can be selected by the BDS bit). It becomes "H" level at the idle state.
ST
D0
D1
D2
ST
D0
D1
D2
ST
D0
D1
D2
ST
D0
D1
D2
. . .
6-bit and 8-bit data is also the same.
ST
D0
D1
D2
ST
D0
D1
D2
ST
D0
D1
D2
ST
D0
D1
D2
ST : Start bit
SP : Stop bit
P : Parity bit
D0 to 7: Data. The sequence can be selected from "LSB first" or "MSB first" by the
direction control register (BDS bit)
BRS[7:0]
02
(2) to FF
H
Figure 20.7-2 Transfer Data Format
D3
D4
SP
D3
D4
SP
SP
P
SP
D3
D4
P
SP
SP
D3
D4
D3
D4
D5
D6
D7
SP
D4
D5
D6
D3
D7
SP
D3
D4
D5
D6
D7
D3
D4
D5
D6
D7
(255)
H
Without P
5-bit data
With P
Without P
SP
P
SP
With P
P
SP
SP
CHAPTER 20 UART/SIO
8-bit data
345

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