M16C65 Datasheet, PDF (522/829 Pages) Renesas Technology Corp – RENESAS MCU M16C FAMILY / M16C/60

Under development
M16C/65 Group
Preliminary Specification
This is a preliminary specification and is subject to change.
23. Serial Interface UARTi (i = 0 to 2, 5 to 7)
23. Serial Interface UARTi (i = 0 to 2, 5 to 7)
Note
The 80-pin package does not have pins CLK2 and CTS2/RTS2 for UART2. Do not use functions
associated with these pins. UART6 and UART7 are not included.
23.1 Introduction
Each UARTi has a dedicated timer to generate a transmit/receive clock, so it operates independently of
the others.
Table 23.1 lists Specifications of UARTi (i = 0 to 2, 5 to 7), Table 23.2 lists Specification Difference in
UART0 to UART2 and UART5 to UART7, Figure 23.1 to Figure 23.3 show UARTi Block Diagram, and
Figure 23.4 shows UARTi Transmit/Receive Unit Block Diagram.
Table 23.1 Specifications of UARTi (i = 0 to 2, 5 to 7)
Item
Operational mode
Specification
• Clock synchronous serial I/O mode
• Clock asynchronous serial I/O mode (UART mode)
• Special mode 1 (I²C mode)
• Special mode 2
The simplified I²C-bus interface is supported.
• Special mode 3 (bus collision detection function, IE mode)
A 1-byte wave of the UART mode approximates 1-bit of the IEBus.
• Special mode 4 (SIM mode)
UART2 is available. The SIM interface is supported.
Table 23.2 Specification Difference in UART0 to UART2 and UART5 to UART7
Mode
UART0 UART1 UART2
Clock synchronous serial I/O mode Available
Available
Clock asynchronous serial I/O mode Available
Available
(UART mode)
Special mode 1 (I²C mode)
Available
Available
Special mode 2
Available
Available
Special mode 3 (IE mode)
Available
Available
Special mode 4 (SIM mode)
Not available
Available
Memory expansion mode or
Can be used
microprocessor mode
UART5
Available
Available
UART6 UART7
Available
Available
Available
Available
Available
Not available
Available
Available
Available
Not available
Do not use.
REJ09B0484-0030 Rev.0.30 Sep 09, 2008
Page 487 of 791