參數(shù)資料
型號: M30100
廠商: Renesas Technology Corp.
英文描述: SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
中文描述: 單片16位CMOS微機
文件頁數(shù): 129/164頁
文件大?。?/td> 3302K
代理商: M30100
deveopment
Tentative Specifications REV.E1
Usage precaution
Specifications in this manual are tentative and subject to change.
Mitsubishi microcomputers
M30100/M30102 Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
128
Precautionary Notes in Using the Device
A-D Converter
(1) Only write to each bit (except bit 6) of the AD Control Register 0, or each bit of the AD Control Register 1, or
bit 0 of the AD Control Register 2 when AD conversion is stopped (before a trigger occurs).
When the Vref Connection Bit is changed from “0” to “1”, wait 1
μ
s or longer before starting AD conversion.
(2) When changing AD operation mode, select an analog pin again.
(3) One Shot Mode
Read the AD register only after confirming AD conversion is completed, which can be determined by using
the AD conversion interrupt.
(4) Repeat Mode
Use the undivided main clock as the internal CPU clock when using this mode. The main clock can be
divided by an internal divider circuit but make sure that you use main clock when using this mode.
(5) If A-D conversion is forcibly terminated while in progress by setting the ADST bit of ADCON0 register to 0 (A-
D conversion halted), the conversion result of the A-D converter is indeterminate. If the ADST bit is cleared
to 0 in a program, ignore the value of AD register.
Stop and Wait Mode
(1) You must put at least four NOPs after a stop (All-Clock Stop Bit to "1") or a wait instruction. When switching
to a stop or wait mode, 4 instructions are prefetched after the stop or wait instruction. And so, ensure that at
least four NOPs follow the stop or wait instruction.
Serial I/O
(1) When reading data from the UARTi receive buffer in the clock asynchronous serial I/O mode, data should be
read high-byte first then low-byte using byte-size. If data is read as low-byte then high-byte or in word-size,
the framing error and parity error flags are cleared.
A code example is shown below.
MOV.B
MOV.B
00A7H. R0H
00A6H. R0L
; Read the high-byte of UART0 receive buffer register
; Read the low-byte of UART0 receive buffer register
(2) When writing data to the UARTi transmit buffer register in the clock asynchronous serial I/O mode with 9-bit
transfer data length, data should be written high-byte first then low-byte using byte-size.
A code example is shown below.
MOV.B
MOV.B
#XXH, 00A3H
#XXH, 00A2H
; Write the high-byte of UART0 transmit buffer register
; Write the low-byte of UART0 transmit buffer register
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