m30262f8gp Renesas Electronics Corporation., m30262f8gp Datasheet - Page 125

• Manufacturer Part Number: m30262f8gp
• Description: Renesas 16-bit Cmos Single-chip Microcomputer M16c Family / M16c/20 Series
• Manufacturer: Renesas Electronics Corporation.

Clock Synchronous Serial I/O Mode
Clock Synchronous Serial I/O Mode
Note 1: “n” denotes the value 00
Note 2: If an overrun error occurs, the UARTi receive buffer will have the next data written in. In addition,
Table 1.15.2. Specifications of clock synchronous serial I/O mode (1)
Interrupt request
generation timing
Transfer data format
Transfer clock
0378
Transmission/reception control
Transmission start condition
Reception start condition
UARTi
Error detection
The clock synchronous serial I/O mode uses a transfer clock to transmit and receive data. Tables 1.15.2
and 1.15.3 list the specifications of the clock synchronous serial I/O mode. Figure 1.15.11 shows the
UARTi transmit/receive mode register.
16
the UARTi receive interrupt request bit does not change.
Item
Preliminary Specifications Rev. 0.9
Specifications in this manual are tentative and subject to change.
16
• Transfer data length: 8 bits
• When internal clock is selected (bit 3 at addresses 03A0
•
• To start transmission, the following requirements must be met:
_
_
_
•
_
_
_
_
_
• Furthermore, if external clock is selected, the following requirements must
_
_
• When transmitting
_
_
• When receiving
_
• Overrun error (Note 2)
• To start reception, the following requirements must be met:
= “0”) : fi/ 2(n+1) (Note 1)
CLKi input level = “H”
CLKi input level = “L”
also be met:
CLKi input level = “H”
CLKi input level = “L”
UARTi transfer register is completed
Generated 7 clock periods after the device started receiving the next data
before reading out the contents of the UARTi receive buffer register.
CTS
Furthermore, if external clock is selected, the following requirements must also be met:
Transmit buffer empty flag (bit 1 at addresses 03A5
Transmit buffer empty flag (bit 1 at addresses 03A5
Transmit enable bit (bit 0 at addresses 03A5
When CTS function selected, CTS input level = “L”
CLKi polarity select bit (bit 6 at addresses 03A4
CLKi polarity select bit (bit 6 at addresses 03A4
Receive enable bit (bit 2 at addresses 03A5
Transmit enable bit (bit 0 at addresses 03A5
CLKi polarity select bit (bit 6 at addresses 03A4
CLKi polarity select bit (bit 6 at addresses 03A4
Transmit interrupt cause select bit (bits 0, 1 at address 03B0
Transmit interrupt cause select bit (bits 0, 1 at address 03B0
Interrupts requested when data transfer from UARTi receive register to
to FF
• When external clock is selected (bit 3 at addresses 03A0
= “1”) : Input from CLKi pin
address 037D
transfer buffer register to UARTi transmit register is completed
address 037D
UARTi receive buffer register is completed
function,
16
that is set in the UART bit rate generator.
Renesas Technology Corp.
RTS
16
16
) = “1”: Interrupts requested when data transmission from
function,
) = “0”: Interrupts requested when data transfer from
fi = f
CTS
1SIO
and
Specification
, f
RTS
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
2SIO,
function disabled: selectable
f
8SIO
16
16
16
, 03AD
, 03AD
, 03AD
, f
16
16
16
16
32SIO
16
, 03AC
, 03AC
16
, 03AC
, 03AC
, 03AD
, 03AD
16
16
16
, 037D
, 037D
, 037D
16
16
16
16
16
M16C/26 Group
, 03A8
16
16
, 037C
, 037C
, 037C
, 037C
, 037D
, 037D
16
16
16
16
16
, bit 4 at
, bit 4 at
16
) = “1”
) = “1”
) = “1”
16
, 03A8
16
16
16
16
, 0378
16
16
) = “0”:
) = “1”:
) = “0”:
) = “1”:
) = “0”
) = “0”
16
16
,
119