Serial Interface Uarti (I = 0 To 2, 5 To 7); Introduction - Renesas M16C/64A Series User Manual

M16C/64A Group

23. Serial Interface UARTi (i = 0 to 2, 5 to 7)

23.1

Introduction

Each UART has a dedicated timer to generate a transmit/receive clock, and operates independently of
the others.
Table 23.1 lists UARTi Specifications (i = 0 to 2, 5 to 7). Table 23.2 lists Specification Differences between
UART0 to UART2 and UART5 to UART7. Figure 23.1 to Figure 23.3 show the block diagrams of UARTi.
Figure 23.4 shows UARTi Transmit/Receive Unit Block Diagram.
Table 23.1 UARTi Specifications (i = 0 to 2, 5 to 7)
Item
Operational mode
Table 23.2 Specification Differences between UART0 to UART2 and UART5 to UART7
Mode
Clock synchronous serial I/O mode
Clock asynchronous serial I/O mode
(UART mode)
2
Special mode 1 (I C mode)
Special mode 2
Special mode 3 (IE mode)
Special mode 4 (SIM mode)
Memory expansion mode or
microprocessor mode
R01UH0136EJ0210 Rev.2.10
Jul 31, 2012
•
Clock synchronous serial I/O mode
•
Clock asynchronous serial I/O mode (UART mode)
2
•
Special mode 1 (I C mode)
2
The simplified I C-bus interface is supported.
•
Special mode 2
The transmit/receive clock polarity and phase are selectable.
•
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)
Can be used with UART2. The SIM interface is supported.
UART0 UART1
Available
Available
Available
Available
Available
Not available
23. Serial Interface UARTi (i = 0 to 2, 5 to 7)
Specification
UART2 UART5
Available Available
Available Available
Available Available
Available Available
Available Available
Available Not available
Can be used
UART6 UART7
Available
Available
Available
Available
Available
Not available
Do not use.
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