tmp89fm82t TOSHIBA Semiconductor CORPORATION, tmp89fm82t Datasheet - Page 261

• Manufacturer Part Number: tmp89fm82t
• Description: 8 Bit Microcontroller
• Manufacturer: TOSHIBA Semiconductor CORPORATION

RA001
Table 16-3 Transfer Baud Rate
16.4
<SIOCKS>
SIO0CR
16.4.1
16.4.2
16.4.3
000
001
010
011
100
101
110
Functions
DIR> to "0" selects LSB first as the transfer format. In this case, the serial data is transferred in sequence from
the least significant bit.
transferred in sequence from the most significant bit.
serial clock is output from the SCLK0 pin. The serial data is transferred in synchronization with the edge of the
SCLK0 pin output.
clock must be input to the SCLK0 pin. The serial data is transferred in synchronization with the edge of the
external clock.
"16.4.3 Transfer edge selection".
NORMAL1/2 or
and the data is received in synchronization with the rising edge of the clock.
IDLE1/2 mode
The transfer format can be set to either MSB or LSB first by using SIO0CR<SIODIR>. Setting SIO0CR<SIO-
Setting SIO0CR<SIODIR> to "1" selects MSB first as the transfer format. In this case, the serial data is
The serial clock can be selected by using SIO0CR<SIOCKS>.
Setting SIO0CR<SIOCKS> to "000" to "110" selects the internal clock as the serial clock. In this case, the
Setting SIO0CR<SIOCKS> to "111" selects an external clock as the serial clock. In this case, an external serial
The serial data transfer edge can be selected for both the external and internal clocks. For details, refer to
The serial data transfer edge can be selected by using SIOCR<SIOEDG>.
When SIOCR<SIOEDG> is "0", the data is transmitted in synchronization with the falling edge of the clock
fcgck/2
fcgck/2
fcgck/2
fcgck/2
fcgck/2
fcgck/2
fcgck/2
Transfer format
Serial clock
Transfer edge selection
Serial clock [Hz]
9
6
5
4
3
2
SLEEP1 mode
SLOW1/2 or
Table 16-4 Transfer Edge Selection
fs/2
-
-
-
-
-
-
SIO0CR<SIOEDG>
3
time (μs)
0
1
1-bit
512
64
32
16
fcgck=1MHz
8
4
2
15.625k
1.953k
31.25k
62.5k
Baud
(bps)
125k
250k
500k
rate
Data transmission
time (μs)
Page 245
Falling edge
Rising edge
1-bit
128
0.5
16
fcgck=4MHz
8
4
2
1
7.813k
Baud
62.5k
(bps)
125k
250k
500k
rate
1M
2M
time (μs)
1-bit
0.25
0.5
64
fcgck=8MHz
8
4
2
1
Data reception
Falling edge
Rising edge
15.625k
Baud
(bps)
125k
250k
500k
rate
1M
2M
4M
time (μs)
1-bit
244
fs=32.768kHz
-
-
-
-
-
-
Baud
(bps)
rate
4k
-
-
-
-
-
-
TMP89FM82T