m30833fjgp Renesas Electronics Corporation., m30833fjgp Datasheet - Page 322

• Manufacturer Part Number: m30833fjgp
• Description: Renesas 16/32-bit Single-chip Microcomputer M16c Family / M32c/80 Series
• Manufacturer: Renesas Electronics Corporation.

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Table 21.22 UART Mode Specifications
0
21.4.2 Clock Asynchronous Serial I/O Mode (UART) (Groups 0 and 1)
Transfer Data Format
Transfer Clock
Transmit Start Condition
Receive Start Condition
Interrupt Request
Error detection
Selectable function
1
C
9
1. The transfer clock must be f
2. Set the GiPOCR2 register and the GiTMCR2 register.
3. When an overrun error occurs, the GiRB register is indeterminate.
3 .
B
In clock asynchronous serial I/O mode (UART), data is transmitted at a desired bit rate and in a desired
transfer data format. Table 21.22 lists specifications of UART mode groups 0 and 1. Table 21.23 lists
registers to be used and their settings. Tables 21.24 to 21.27 list pin settings. Figure 21.40 shows an
example of transmit operation. Figure 21.41 shows an example of receive operation.
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• Character Bit (transfer data) :
• Start bit :
• Stop bit :
When the CKDIR bit in the GiMR register (i=0, 1) is set to "0" (internal clock) :
Set the registers associated with the waveform generation function, the GiMR register and
GiERC register. Then, set as written below after at least one transfer clock cycle.
• Set the TE bit in the GiCR register to "1" (transmit enable)
• Set the TI bit in the GiCR register to "0" (data in the GiTB register)
Set the registers associated with the waveform generation function, the GiMR register and
GiERC register. Then, set as written below after at least one transfer clock cycle.
• Set the RE bit in the GiCR register to "1" (receive enable)
• Detect the start bit
• While transmitting, one of the following conditions can be selected to set the SIOiTR
• While receiving, the following condition can be selected to set the SIOiRR bit to "1"
• Overrun error
• Framing Error
• Stop bit length
• LSB first/MSB first
C
f o
bit to "1" (see Figure 10.14):
the GiRB register
n : setting value of the GiPO0 register, 0000
• The GiPO0 register determines the bit rate.
_
_
(see Figure 10.14) :
Data is transferred from the receive register to the GiRB register (data reception is
completed)
This error occurs when the final stop bit of the next data is received before reading
This error occurs when the number of the stop bits set is not detected
The length of the stop bit is selected from 1 bit or 2 bits
Select either bit 0 or bit 7 to transmit/receive data
8 /
4
Transmit clock is generated in phase-delayed waveform output mode of the chan-
nel 3 waveform generation function.
Receive clock is generated with the channel 2 time measurement function.
data is transferred to the transmit register from the GiTB register.
transmit register is completed
The IRS bit in the GiMR register is set to "0" (no data in the GiTB register) and
The IRS bit is set to "1" (transmission completed) and data transfer from the
3
BTi
8
) T
8
divided by six or more.
(3)
21. Intelligent I/O (Group 0, 1 Communication Function)
8 bits long
1 bit long
select length from 1 bit or 2 bits
Specification
16
to FFFF
16
.
2(n+2)
f
BTi