- 您现在的位置：买卖IC网 > PDF目录67761 > M34519M8-XXXFP 4-BIT, MROM, 6 MHz, MICROCONTROLLER, PDSO42 PDF资料下载
参数资料
| 型号： | M34519M8-XXXFP |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 4-BIT, MROM, 6 MHz, MICROCONTROLLER, PDSO42 |
| 封装： | 0.450 INCH, 0.80 MM PITCH, PLASTIC, SSOP-42 |
| 文件页数： | 109/138页 |
| 文件大小： | 1146K |
| 代理商： | M34519M8-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页当前第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页第132页第133页第134页第135页第136页第137页第138页
Rev.3.01
2005.06.15
page 70 of 160
REJ03B0007-0301
4519 Group
Fig. 62 External clock input circuit
Fig. 61 External quartz-crystal circuit
Note: Externally connect a damping
resistor Rd depending on the
oscillation frequency.
(A feedback resistor is built-in.)
Use the quartz-crystal manu-
facturer’s recommended value
because constants such as ca-
pacitance depend on the
resonator.
Fig. 58 Handling of XIN and XOUT when operating on-chip oscillator
Fig. 59 Ceramic resonator external circuit
Fig. 60 External RC oscillation circuit
Execute the CMCK instruc-
tion in program.
Note: Externally connect a damping
resistor Rd depending on the
oscillation frequency.
(A feedback resistor is built-in.)
Use the resonator manu-
facturer’s recommended value
because constants such as ca-
pacitance depend on the
resonator.
*
M34519
XIN
XOUT
*
Do not use the CMCK, CRCK and
CYCK instructions in program.
Open
M34519
XIN
XOUT
Rd
CIN
COUT
M34519
XIN
XOUT
R
C
*
Execute the CRCK
instruction in program.
Open
M34519
XIN
XOUT
Rd
CIN
COUT
Execute the CYCK instruction
in program.
*
M34519
XIN
XOUT
External oscillation circuit
VDD
VSS
R
1k
or more
Open
(2) On-chip oscillator operation
When the MCU operates by the on-chip oscillator as the main clock
(f(XIN)) without using the ceramic resonator, RC oscillator or
quartz-crystal oscillation, leave XIN pin and XOUT pin open (Figure
58).
The clock frequency of the on-chip oscillator depends on the sup-
ply voltage and the operation temperature range.
Be careful that the margin of frequencies when designing applica-
tion products.
(3) Ceramic resonator
When the ceramic resonator is used as the main clock (f(XIN)),
connect the ceramic resonator and the external circuit to pins XIN
and XOUT at the shortest distance. Then, execute the CMCK in-
struction. A feedback resistor is built in between pins XIN and XOUT
(Figure 59).
(4) RC oscillation
When the RC oscillation is used as the main clock (f(XIN)), connect
the XIN pin to the external circuit of resistor R and the capacitor C
at the shortest distance and leave XOUT pin open. Then, execute
the CRCK instruction (Figure 60).
The frequency is affected by a capacitor, a resistor and a micro-
computer. So, set the constants within the range of the frequency
limits.
(5) Quartz-crystal oscillator
When a quartz-crystal oscillator is used as the main clock (f(XIN)),
connect this external circuit and a quartz-crystal oscillator to pins
XIN and XOUT at the shortest distance. Then, execute the CYCK in-
struction. A feedback resistor is built in between pins XIN and XOUT
(Figure 61).
(6) External clock
When the external clock signal for the main clock (f(XIN)) is used,
connect the clock source to XIN pin and XOUT pin open. In program,
after the CMCK instruction is executed, set main clock (f(XIN)) os-
cillation start to be enabled (MR1=0).
For this product, when RAM back-up mode and main clock (f(XIN))
stop (MR1=1), XIN pin is fixed to “H” in order to avoid the through
current by floating of internal logic. The XIN pin is fixed to “H” until
main clock (f(XIN)) oscillation starts to be valid (MR1=0) by the
CMCK instruction from reset state. Accordingly, when an external
clock is used, connect a 1 k
or more resistor to XIN pin in series
to limit of current by competitive signal.
Execute the CMCK instruction in
program, and set the main clock
f(XIN) to be enabled (MR1=0)
*
相关PDF资料 |
PDF描述 |
|---|---|
| M34519M6-XXXFP | 4-BIT, MROM, 6 MHz, MICROCONTROLLER, PDSO42 |
| M34553M8H-XXXFP | 4-BIT, MROM, 6 MHz, MICROCONTROLLER, PQFP48 |
| M34553M4-XXXFP | 4-BIT, MROM, 6 MHz, MICROCONTROLLER, PQFP48 |
| M34553G8HFP | 4-BIT, OTPROM, 6 MHz, MICROCONTROLLER, PQFP48 |
| M34553M4H-XXXFP | 4-BIT, MROM, 6 MHz, MICROCONTROLLER, PQFP48 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| M34-52 | 制造商:GAMEWELL-FCI 制造商全称:GAMEWELL-FCI 功能描述:Three-Fold Fire Alarm Boxes and Transmitters |
| M34524EDFP | 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
| M34524M8-XXXFP | 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
| M34524MC-XXXFP | 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:4-BIT CISC SINGLE-CHIP MICROCOMPUTER 720 FAMILY / 4500 SERIES |
| M3452-C09K1 | 制造商:Bonitron 功能描述:OVERVOLTAGE BRAKING TRANSISTOR |
发布紧急采购，3分钟左右您将得到回复。