- 您现在的位置：买卖IC网 > PDF目录80549 > M37547G2FP 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDSO36 PDF资料下载
参数资料
| 型号： | M37547G2FP |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDSO36 |
| 封装： | 8.40 X 15 MM, 0.80 MM PITCH, PLASTIC, SSOP-36 |
| 文件页数： | 65/97页 |
| 文件大小： | 1064K |
| 代理商： | M37547G2FP |
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页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页当前第65页第66页第67页第68页第69页第70页第71页第72页第73页第74页第75页第76页第77页第78页第79页第80页第81页第82页第83页第84页第85页第86页第87页第88页第89页第90页第91页第92页第93页第94页第95页第96页第97页
REJ03B0156-0122
Rev.1.22
Mar 31, 2009
page 68 of 94
7547 Group
NOTES ON PROGRAMMING
Processor Status Register
The contents of the processor status register (PS) after reset are
undefined except for the interrupt disable flag I which is “1”. After
reset, initialize flags which affect program execution. In particular,
it is essential to initialize the T flag and the D flag because of their
effect on calculations. Initialize these flags at beginning of the
program.
Interrupts
The contents of the interrupt request bit do not change even if the
BBC or BBS instruction is executed immediately after they are
changed by program because this instruction is executed for the
previous contents. For executing the instruction for the changed
contents, execute one instruction before executing the BBC or
BBS instruction.
Decimal Calculations
For calculations in decimal notation, set the decimal mode flag
D to “1”, then execute the ADC instruction or SBC instruction. In
this case, execute SEC instruction, CLC instruction or CLD in-
struction after executing one instruction before the ADC instruction
or SBC instruction.
In the decimal mode, the values of the N (negative), V (overflow)
and Z (zero) flags are invalid.
Ports
The values of the port direction registers cannot be read.
That is, it is impossible to use the LDA instruction, memory opera-
tion instruction when the T flag is “1”, addressing mode using
direction register values as qualifiers, and bit test instructions such
as BBC and BBS.
It is also impossible to use bit operation instructions such as CLB
and SEB and read/modify/write instructions of direction registers
for calculations such as ROR.
For setting direction registers, use the LDM instruction, STA in-
struction, etc.
A/D Conversion
Do not execute the STP instruction during A/D conversion.
Instruction Execution Timing
The instruction execution time can be obtained by multiplying the
frequency of the internal clock φ by the number of cycles men-
tioned in the machine-language instruction table.
The frequency of the internal clock φ is the same as that of the XIN
in double-speed mode, twice the XIN cycle in high-speed mode
and 8 times the XIN cycle in middle-speed mode.
CPU Mode Register
The oscillation mode selection bit and processor mode bits can be
rewritten only once after releasing reset. However, after rewriting it
is disable to write any value to the bit. (Emulator MCU is ex-
cluded.)
When a ceramic oscillation is selected, a double-speed mode of
the clock division ratio selection bits can be used. Do not use it
when an RC oscillation is selected.
State transition
Do not stop the clock selected as the operation clock because of
setting of CM3, 4.
NOTES ON HARDWARE
Handling of Power Source Pin
In order to avoid a latch-up occurrence, connect a capacitor suit-
able for high frequencies as bypass capacitor between power
source pin (Vcc pin) and GND pin (Vss pin). Besides, connect the
capacitor to as close as possible. For bypass capacitor which
should not be located too far from the pins to be connected, a ce-
ramic capacitor of 0.01 F to 0.1 F is recommended.
相关PDF资料 |
PDF描述 |
|---|---|
| M38D58G8-XXXHP | 8-BIT, MROM, 6.25 MHz, MICROCONTROLLER, PQFP80 |
| MC6805R3S | 8-BIT, MROM, MICROCONTROLLER, CDIP40 |
| MC68HC705P6MDW | 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDSO28 |
| MC908QB4CDT | 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PDSO16 |
| MC908QL2CDTE | 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PDSO16 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| M37547G2FP#U0 | 功能描述:MCU 2/5V 8KB 36-SSOP RoHS:是 类别:集成电路 (IC) >> 嵌入式 - 微控制器， 系列:740/38000 标准包装:250 系列:80C 核心处理器:8051 芯体尺寸:8-位 速度:16MHz 连通性:EBI/EMI，I²C，UART/USART 外围设备:POR，PWM，WDT 输入/输出数:40 程序存储器容量:- 程序存储器类型:ROMless EEPROM 大小:- RAM 容量:256 x 8 电压 - 电源 (Vcc/Vdd):4.5 V ~ 5.5 V 数据转换器:A/D 8x10b 振荡器型:内部 工作温度:-40°C ~ 85°C 封装/外壳:68-LCC（J 形引线） 包装:带卷 (TR) |
| M37547G2-XXXFP | 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M37547G4FP | 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M37547G4FP#U0 | 功能描述:MCU 2/5V 16K 36-SSOP RoHS:是 类别:集成电路 (IC) >> 嵌入式 - 微控制器， 系列:740/38000 标准包装:250 系列:80C 核心处理器:8051 芯体尺寸:8-位 速度:16MHz 连通性:EBI/EMI，I²C，UART/USART 外围设备:POR，PWM，WDT 输入/输出数:40 程序存储器容量:- 程序存储器类型:ROMless EEPROM 大小:- RAM 容量:256 x 8 电压 - 电源 (Vcc/Vdd):4.5 V ~ 5.5 V 数据转换器:A/D 8x10b 振荡器型:内部 工作温度:-40°C ~ 85°C 封装/外壳:68-LCC（J 形引线） 包装:带卷 (TR) |
| M37547G4-XXXFP | 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
发布紧急采购，3分钟左右您将得到回复。