- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄370886 > M38024M5-640SS (Mitsubishi Electric Corporation) 1 watt dc-dc converters PDF資料下載
參數(shù)資料
| 型號： | M38024M5-640SS |
| 廠商： | Mitsubishi Electric Corporation |
| 元件分類： | DC/DC變換器 |
| 英文描述： | 1 watt dc-dc converters |
| 中文描述： | 1瓦的DC - DC轉(zhuǎn)換器 |
| 文件頁數(shù)： | 52/207頁 |
| 文件大?。?/td> | 2389K |
| 代理商： | M38024M5-640SS |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁當前第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁第89頁第90頁第91頁第92頁第93頁第94頁第95頁第96頁第97頁第98頁第99頁第100頁第101頁第102頁第103頁第104頁第105頁第106頁第107頁第108頁第109頁第110頁第111頁第112頁第113頁第114頁第115頁第116頁第117頁第118頁第119頁第120頁第121頁第122頁第123頁第124頁第125頁第126頁第127頁第128頁第129頁第130頁第131頁第132頁第133頁第134頁第135頁第136頁第137頁第138頁第139頁第140頁第141頁第142頁第143頁第144頁第145頁第146頁第147頁第148頁第149頁第150頁第151頁第152頁第153頁第154頁第155頁第156頁第157頁第158頁第159頁第160頁第161頁第162頁第163頁第164頁第165頁第166頁第167頁第168頁第169頁第170頁第171頁第172頁第173頁第174頁第175頁第176頁第177頁第178頁第179頁第180頁第181頁第182頁第183頁第184頁第185頁第186頁第187頁第188頁第189頁第190頁第191頁第192頁第193頁第194頁第195頁第196頁第197頁第198頁第199頁第200頁第201頁第202頁第203頁第204頁第205頁第206頁第207頁
1-37
HARDWARE
3802 GROUP USER’S MANUAL
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”. Af-
ter a reset, initialize flags which affect program execution.
In particular, 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 re-
quest register, execute at least one instruction before executing 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. Only the ADC and
SBC instructions yield proper decimal results. After executing an
ADC or SBC instruction, execute at least one instruction before
executing a SEC, CLC, or CLD instruction.
In decimal mode, the values of the negative (N), overflow (V), and
zero (Z) flags are invalid.
The carry flag can be used to indicate whether a carry or borrow
has occurred. Initialize the carry flag before each calculation.
Clear the carry flag before an ADC and set the flag before an
SBC.
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 contents
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 instruction (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 S
RDY1
signal, set the transmit
enable bit, the receive enable bit, and the S
RDY1
output enable bit
to “1”.
Serial I/O1 continues to output the final bit from the T
X
D pin after
transmission is completed. The S
OUT2
pin from serial I/O2 goes to
high impedance after transmission is completed.
A-D Converter
The comparator uses internal capacitors whose charge will be lost
if the clock frequency is too low.
Make sure that f(X
IN
) is at least 500 kHz during an A-D conver-
sion. (If the ONW pin has been set to “L”, the A-D conversion will
take twice as long to match the longer bus cycle, and so f(X
IN
)
must be at least 1 MHz.)
Do not execute the STP or WIT instruction during an A-D conver-
sion.
D-A Converter
The accuracy of the D-A converter becomes poor rapidly under
the V
CC
= 3.0 V or less condition.
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 X
IN
frequency.
When the ONW function is used in modes other than single-chip
mode, the frequency of the internal clock
φ
may be one fourth the
X
IN
frequency.
Memory Expansion Mode
The memory expansion mode is not available in the following mi-
crocomputers.
M38024M6-XXXSP
M38024M6-XXXFP
Memory Expansion Mode and Microproces-
sor Mode
Execute the LDM or STA instruction for writing to port P3 (address
0006
16
) in memory expansion mode and microprocessor mode.
Set areas which can be read out and write to port P3 (address
0006
16
) in a memory, using the read-modify-write instruction
(SEB, CLB).
NOTE ON PROGRAMMING
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| M38024M6-640FP | 1 watt dc-dc converters |
| M38024M6-640FS | 1 watt dc-dc converters |
| M38024M6-640SP | 1 watt dc-dc converters |
| M38024M6-640SS | 1 watt dc-dc converters |
| M38025E3-768FP | 1 watt dc-dc converters |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M38027E8FP | 制造商:Renesas Electronics Corporation 功能描述:M16C FLASH 256K/20K, 24MHZ,DMA,I2C,IEBU - Trays |
| M38027E8FP#U0 | 制造商:Renesas Electronics Corporation 功能描述:M16C FLASH 256K/20K, 24MHZ,DMA,I2C,IEBU -LEAD FREE VERSION - Trays |
| M38027E8FS | 制造商:Renesas Electronics Corporation 功能描述:MCU 8BIT 740 CISC 32KB EPROM 3.3V/5V 64CLCC - Bulk |
| M38027E8SS | 制造商:Renesas Electronics Corporation 功能描述:MCU 8BIT 740 CISC 32KB EPROM 3.3V/5V 64PIN SDIP - Bulk |
| M3802-BLACK-100 | 制造商:Alpha Wire 功能描述: |
發(fā)布緊急采購，3分鐘左右您將得到回復。