- 您现在的位置：买卖IC网 > PDF目录45045 > M38503M6-XXXFP 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDSO42 PDF资料下载
参数资料
| 型号： | M38503M6-XXXFP |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDSO42 |
| 封装： | 0.450 INCH, 0.80 MM PITCH, PLASTIC, SSOP-42 |
| 文件页数： | 24/52页 |
| 文件大小： | 806K |
| 代理商： | M38503M6-XXXFP |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页当前第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页
30
3850 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
NOTES ON PROGRAMMING
Processor Status Register
The contents of the processor status register (PS) after a reset are
undefined, except for the interrupt disable flag (I) which is “1.” After
a reset, initialize flags which affect program execution. In particu-
lar, it is essential to initialize the index X mode (T) and the decimal
mode (D) flags because of their effect on calculations.
Interrupts
The contents of the interrupt request bits do not change immedi-
ately after they have been written. After writing to an interrupt
request register, execute at least one instruction before performing
a BBC or BBS instruction.
Decimal Calculations
To calculate in decimal notation, set the decimal mode flag (D)
to “1”, then execute an ADC or SBC instruction. After executing
an ADC or SBC instruction, execute at least one instruction be-
fore executing a SEC, CLC, or CLD instruction.
In decimal mode, the values of the negative (N), overflow (V),
and zero (Z) flags are invalid.
Timers
If a value n (between 0 and 255) is written to a timer latch, the fre-
quency division ratio is 1/(n+1).
Multiplication and Division Instructions
The index X mode (T) and the decimal mode (D) flags do not af-
fect the MUL and DIV instruction.
The execution of these instructions does not change the con-
tents of the processor status register.
Ports
The contents of the port direction registers cannot be read. The
following cannot be used:
The data transfer instruction (LDA, etc.)
The operation instruction when the index X mode flag (T) is “1”
The addressing mode which uses the value of a direction regis-
ter as an index
The bit-test instruction (BBC or BBS, etc.) to a direction register
The read-modify-write instructions (ROR, CLB, or SEB, etc.) to a
direction register.
Use instructions such as LDM and STA, etc., to set the port direc-
tion registers.
Serial I/O
In clock synchronous serial I/O, if the receive side is using an ex-
ternal clock and it is to output the SRDY signal, set the transmit
enable bit, the receive enable bit, and the SRDY output enable bit
to “1.”
Serial I/O continues to output the final bit from the TXD pin after
transmission is completed.
When an external clock is used as synchronous clock in serial I/O,
write transmission data to the transmit buffer register while the
transfer clock is “H.”
A-D Converter
The comparator uses capacitive coupling amplifier whose charge
will be lost if the clock frequency is too low.
Therefore, make sure that f(XIN) is at least on 500 kHz during an
A-D conversion.
Do not execute the STP or WIT instruction during an A-D conver-
sion.
Instruction Execution Time
The instruction execution time is obtained by multiplying the fre-
quency of the internal clock
φ by the number of cycles needed to
execute an instruction.
The number of cycles required to execute an instruction is shown
in the list of machine instructions.
The frequency of the internal clock
φ is half of the XIN frequency in
high-speed mode.
相关PDF资料 |
PDF描述 |
|---|---|
| M38503E6SP | 8-BIT, OTPROM, 8 MHz, MICROCONTROLLER, PDIP42 |
| M38504E6FP | 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDSO42 |
| M38504M6-XXXSP | 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDIP42 |
| M38504E6-XXXSP | 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDIP42 |
| M38503E4-XXXSP | 8-BIT, OTPROM, 4 MHz, MICROCONTROLLER, PDIP42 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| M38504E6FP | 制造商:Renesas Electronics Corporation 功能描述:MCU 3/5V 24K 42-SSOP - Trays |
| M38504E6FP#U0 | 功能描述:MCU 4.0/5.5V 24K PB-FREE 42-SSOP RoHS:是 类别:集成电路 (IC) >> 嵌入式 - 微控制器， 系列:740/38000 产品培训模块:CAN Basics Part-1 CAN Basics Part-2 Electromagnetic Noise Reduction Techniques Part 1 M16C Product Overview Part 1 M16C Product Overview Part 2 标准包装:1 系列:M16C™ M32C/80/87 核心处理器:M32C/80 芯体尺寸:16/32-位 速度:32MHz 连通性:EBI/EMI，I²C，IEBus，IrDA，SIO，UART/USART 外围设备:DMA，POR，PWM，WDT 输入/输出数:121 程序存储器容量:384KB（384K x 8） 程序存储器类型:闪存 EEPROM 大小:- RAM 容量:24K x 8 电压 - 电源 (Vcc/Vdd):3 V ~ 5.5 V 数据转换器:A/D 34x10b，D/A 2x8b 振荡器型:内部 工作温度:-20°C ~ 85°C 封装/外壳:144-LQFP 包装:托盘 产品目录页面:749 (CN2011-ZH PDF) 配用:R0K330879S001BE-ND - KIT DEV RSK M32C/87 |
| M38504M6202F | 制造商:Panasonic Industrial Company 功能描述:SUB ONLY IC |
| M38504M6211F | 制造商:Panasonic Industrial Company 功能描述:IC SUB FOR P-M38504M6202F |
| M38507ARLSS | 功能描述:M-SUPPORT TOOL RoHS:否 类别:编程器，开发系统 >> 配件 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program RoHS指令信息:IButton RoHS Compliance Plan 标准包装:1 系列:- 附件类型:USB 至 1-Wire? RJ11 适配器 适用于相关产品:1-Wire? 设备 产品目录页面:1429 (CN2011-ZH PDF) |
发布紧急采购，3分钟左右您将得到回复。