參數(shù)資料
型號： M30101F3FP
元件分類： 微控制器/微處理器
英文描述： 16-BIT, FLASH, 16 MHz, MICROCONTROLLER, PDSO42
封裝： PLASTIC, SSOP-42
文件頁數(shù)： 100/125頁
文件大小： 1608K
代理商： M30101F3FP
Serial I/O
Under
development
Tentative Specifications REV.C1
Specifications in this manual are tentative and subject to change.
Mitsubishi microcomputers
M30100/M30101/M30102 Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
76
Figure 1.15.1. Block diagram of UARTi (i = 0, 1)
Serial I/O
Serial I/O is configured as two channels: UART0 and UART1. UART0 and UART1 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 UARTi (i=0,1). Figure 1.15.2 shows the block diagram of the
transmit/receive unit.
UART0 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 00A016 and
00A816) determine whether UART0 is used as a clock synchronous serial I/O or as a UART. Although a few
functions are different, UART0 and UART1 have almost the same functions.
Figures 1.15.3 through 1.15.5 show the registers related to UARTi.
Bit rate generator
Clock synchronous type
(when internal clock is selected)
UART reception
Clock synchronous type
UART transmission
Clock synchronous type
(when internal clock is selected)
Clock synchronous type
(when external clock is selected)
Receive
clock
Transmit
clock
Clock source selection
Internal
External
Bit rate generator
Receive
clock
Transmit
clock
Clock source selection
n0 : Values set to UART0 bit rate generator (BRG0)
n1 : Values set to UART1 bit rate generator (BRG1)
Clock output pin
select switch
RxD0
1 / (n0+1)
1/16
1/2
CLK0
f1
(Address 00A116)
TxD0
RxD1
1 / (n1+1)
1/16
1/2
CLK1
(Address 00A916)
TxD1
(UART1)
(UART0)
CLKS1
Reception
control circuit
Transmission
control circuit
Transmit/
receive
unit
CLK
polarity
reversing
circuit
Transmit/
receive
unit
Reception
control circuit
Transmission
control circuit
Clock synchronous type
(when internal clock is selected)
Clock synchronous type
(when external clock is selected)
UART reception
Clock synchronous type
UART transmission
Clock synchronous type
(when internal clock is selected)
Internal
External
CLK
polarity
reversing
circuit
f32
f8
f1
f32
f8
fc
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