m30262f8gp Renesas Electronics Corporation., m30262f8gp Datasheet - Page 114

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

Serial I/O
108
Serial I/O
UARTi (i = 0 to 2)
Table 1.15.1. Comparison of functions of UART0 through UART2
Note 1: Only when in clock synchronous serial I/O mode.
Note 2: Only when in clock synchronous serial I/O mode and 8-bit UART mode.
Note 3: Used for SIM interface.
Serial I/O is configured as three channels: UART0, UART1, and UART2.
UART0, UART1 and UART2 each have an exclusive timer to generate a transfer clock, so they operate
independently of each other.
Figure 1.15.1 shows the block diagram of UART0, UART1 and UART2. Figures 1.15.2 and 1.15.3 show
the block diagram of the transmit/receive unit.
UARTi (i = 0 to 2) has two operation modes: a clock synchronous serial I/O mode and a clock asynchronous
serial I/O mode (UART mode). The contents of the serial I/O mode select bits (bits 0 to 2 at addresses
03A0
UART. Although a few functions are different, UART0, UART1 and UART2 have almost the same functions.
UART2, in particular, is used for the SIM (Subscriber Identity Module) interface with some extra settings
added in clock-asynchronous serial I/O mode.
Table 1.15.1 shows the comparison of functions of UART0 through UART2, and Figures 1.15.4 to 1.15.10
show the registers related to UARTi.
Continuous receive mode selection
CLK polarity selection
LSB first / MSB first selection
Transfer clock output from multiple
pins selection
Serial data logic switch
Bus collision detection
TxD, RxD I/O polarity switch
TxD, RxD port output format
Parity error signal output
16
, 03A8
Preliminary Specifications Rev. 0.9
Specifications in this manual are tentative and subject to change.
16
Function
and 0378
16
) determine whether UARTi is used as a clock synchronous serial I/O or as a
Supported
Supported
Supported
Not Supported
Not Supported
Not Supported
CMOS output/Nch OD
Not Supported
Not Supported
Renesas Technology Corp.
UART0
.
(Note 1)
(Note 1)
(Note 1)
Supported
Supported
Supported
Supported
Not Supported
Not Supported
CMOS output/Nch OD
Not Supported
Not Supported
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
UART1
(Note 1)
(Note 1)
(Note 1)
(Note 1)
Supported (Note 3)
Supported
N-channel open-drain
output
Supported (Note 3)
Supported
Not Supported
Supported (Note 2)
Supported (Note 1)
Supported (Note 1)
M16C/26 Group
UART2