- 您现在的位置：买卖IC网 > PDF目录45029 > M37210E4SP 8-BIT, OTPROM, 8.1 MHz, MICROCONTROLLER, PDIP52 PDF资料下载
参数资料
| 型号： | M37210E4SP |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, OTPROM, 8.1 MHz, MICROCONTROLLER, PDIP52 |
| 封装： | 0.600 INCH, 1.78 MM PITCH, SHRINK, PLASTIC, DIP-52 |
| 文件页数： | 37/59页 |
| 文件大小： | 764K |
| 代理商： | M37210E4SP |
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页当前第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
MITSUBISHI MICROCOMPUTERS
M37210M3-XXXSP/FP, M37210M4-XXXSP, M37211M2-XXXSP
M37210E4-XXXSP/FP, M37210E4SP/FP
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER
with ON-SCREEN DISPLAY CONTROLLER
42
CLOCK GENERATING CIRCUIT
The built-in clock generating circuit is shown in Figure 44.
When the STP instruction is executed, the internal clock
φ stops os-
cillating at “H” level. At the same time, timers 3 and 4 are connected
in hardware and “FF16” is set in the timer 3, “0716” is set in the timer
4. Select f(XIN)/16 as the timer 3 count source (set bit 0 of the timer
34 mode register to “0” before the execution of the STP instruction).
And besides, set the timer 3 and timer 4 interrupt enable bits to dis-
abled (“0”) before execution of the STP instruction.
The oscillator is restarted when an external interrupt is accepted.
However, the internal clock
φ keeps its “H” level until timer 4 over-
flows.
This is because the oscillator needs a set-up period if a ceramic reso-
nator or a quartz-crystal oscillator is used.
When the WIT instruction is executed, the internal clock
φ stops in the
“H” level but the oscillator continues running. This wait state is
cleared when an interrupt is accepted (Note). Since the oscillation
does not stop, the next instructions are executed at once.
To return from the stop or the wait state, set the interrupt enable bit to
“1” before executing the STP or the WIT instruction.
Note : In the wait mode, the following interrupts are invalid.
(1) VSYNC interrupt
(2) CRT interrupt
(3) Timer 2 interrupt using P32/TIM2 pin input as count source
(4) Timer 3 interrupt using P33/TIM3 pin input as count source
(5) Timer 4 interrupt using f(XIN)/2 as count source
The circuit example using a ceramic resonator (or a quartz crystal
oscillator) is shown in Figure 42.
Use the circuit constants in accordance with the resonator
manufacture’s recommended values.
Fig. 44 Clock generating circuit block diagram
Interrupt request
Interrupt
disable flag I
Reset
SQ
R
SQ
R
S
Q
R
Reset
STP instruction
Timer 4
Timer 3
1/2
1/8
Internal clock
φ
TIM3
T34M2
T34M0
XIN
XOUT
WIT
instruction
STP instruction
Selection gate: Connected to black
colored side at reset.
Fig. 42 Ceramic resonator circuit example
Fig. 43 External clock input circuit example
M37210M3-XXXSP
XIN
XOUT
24
25
CIN
COUT
M37210M3-XXXSP
XIN
External oscillation
circuit
Vcc
Vss
24
The example of external clock usage is shown in Figure 43 XIN is the
input, and XOUT is open.
相关PDF资料 |
PDF描述 |
|---|---|
| M37210M3-XXXFP | 8-BIT, MROM, 8.1 MHz, MICROCONTROLLER, PQFP64 |
| M37211M2-XXXSP | 8-BIT, MROM, 8.1 MHz, MICROCONTROLLER, PDIP52 |
| M37210E4-XXXSP | 8-BIT, OTPROM, 8.1 MHz, MICROCONTROLLER, PDIP52 |
| M37212EFFP | 8-BIT, OTPROM, MICROCONTROLLER, PQFP80 |
| M37212M4-XXXSP | 8-BIT, MROM, MICROCONTROLLER, PDIP52 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| M37210E4-XXXFP | 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER |
| M37210E4-XXXSP | 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER |
| M37210M3 | 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER |
| M37210M3-010SP | 制造商:MITSUBISHI 制造商全称:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER |
| M37210M3-506SP | 制造商:MITSUBISHI 制造商全称:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER |
发布紧急采购，3分钟左右您将得到回复。