- 您现在的位置：买卖IC网 > PDF目录69013 > M37274MA-XXXSP 8-BIT, MROM, MICROCONTROLLER, PDIP52 PDF资料下载
参数资料
| 型号： | M37274MA-XXXSP |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, MROM, MICROCONTROLLER, PDIP52 |
| 封装： | 0.600 INCH, 1.778 MM PITCH, SHRINK, PLASTIC, DIP-52 |
| 文件页数： | 49/131页 |
| 文件大小： | 2049K |
| 代理商： | M37274MA-XXXSP |
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页当前第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页第98页第99页第100页第101页第102页第103页第104页第105页第106页第107页第108页第109页第110页第111页第112页第113页第114页第115页第116页第117页第118页第119页第120页第121页第122页第123页第124页第125页第126页第127页第128页第129页第130页第131页
24
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
M37274MA-XXXSP
PRELIMINARY
Notice:
This
is not
a final
specification.
Some
paramentic
limits
are
subject
to change.
MITSUBISHI MICROCOMPUTERS
Fig. 16. Serial I/O Mode Register
Internal clock : The serial I/O counter is set to “7” during the write
cycle into the serial I/O register (address 021416), and the transfer
clock goes “H” forcibly. At each falling edge of the transfer clock after
the write cycle, serial data is output from the SOUT pin. Transfer di-
rection can be selected by bit 5 of the serial I/O mode register. At
each rising edge of the transfer clock, data is input from the SIN pin
and data in the serial I/O register is shifted 1 bit.
After the transfer clock has counted 8 times, the serial I/O counter
becomes “0” and the transfer clock stops at HIGH. At this time the
interrupt request bit is set to “1.”
External clock : The an external clock is selected as the clock source,
the interrupt request is set to “1” after the transfer clock has been
counted 8 counts. However, transfer operation does not stop, so the
clock should be controlled externally. Use the external clock of 500kHz
or less with a duty cycle of 50%.
The serial I/O timing is shown in Figure 15. When using an external
clock for transfer, the external clock must be held at HIGH for initial-
izing the serial I/O counter. When switching between an internal clock
and an external clock, do not switch during transfer. Also, be sure to
initialize the serial I/O counter after switching.
Notes 1: On programming, note that the serial I/O counter is set by
writing to the serial I/O register with the bit managing in-
structions, such as SEB and CLB.
2: When an external clock is used as the synchronous clock,
write transmit data to the serial I/O register when the trans-
fer clock input level is HIGH.
Fig. 15. Serial I/O Timing (for LSB first)
Synchronous clock
Transfer clock
Serial I/O register
write signal
Serial I/O output
SOUT
D0
D1
D2
D3
D4
D5
D6
D7
(Note)
Serial I/O input
SIN
Note : When an internal clock is selected, the S OUT pin is at high-impedance after transfer is completed.
Interrupt request bit is set to “1”
7
Serial I/O mode register
(SM : address 021316)
Internal synchronous clock
selection bits
b1 b0
0
0 : f(XIN)/8 or f(XCIN)/8
0
1 : f(XIN)/16 or f(XCIN)/16
1
0 : f(XIN)/32 or f(XCIN)/32
1
1 : f(XIN)/64 or f(XCIN)/64
0
Synchronous clock selection bit
0 : External clock
1 : Internal clock
Port function selection bit
0 : P11, P13 functions as port
1 : SCL1, SDA1
Port function selection bit
0 : P12, P14 functions as port
1 : SCL2, SDA2
Transfer direction selection bit
0 : LSB first
1 : MSB first
Fix these bits to “0”
0
相关PDF资料 |
PDF描述 |
|---|---|
| M37373M8-XXXSP | 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDIP52 |
| M37409M2-XXXFP | 8-BIT, MROM, 10 MHz, MICROCONTROLLER, PQFP56 |
| M37413E6HXXXFP | 8-BIT, OTPROM, 8 MHz, MICROCONTROLLER, PQFP80 |
| M37413M4-XXXFP | 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PQFP80 |
| M37420M4-XXXSP | 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDIP52 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| M37276MF248SP | 制造商:MITSUBISHI 功能描述:* |
| M37276MF2575P | 制造商:MITSUBISHI 功能描述:* |
| M37276MF260SP | 制造商:MITSUBISHI 功能描述:* |
| M37276MF300SP | 制造商:MITSUBISHI 功能描述:* |
| M37276MF301SP | 制造商:MITSUBISHI 功能描述:* |
发布紧急采购，3分钟左右您将得到回复。