- 您现在的位置：买卖IC网 > PDF目录80478 > M37546G2SP 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDIP32 PDF资料下载
参数资料
| 型号： | M37546G2SP |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDIP32 |
| 封装： | 8.90 X 28 MM, 1.78 MM PITCH, PLASTIC, SDIP-32 |
| 文件页数： | 66/105页 |
| 文件大小： | 1105K |
| 代理商： | M37546G2SP |
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页当前第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
REJ03B0160-0122 Rev.1.22 Mar 13, 2009
page 61 of 100
7546 Group
● On-chip oscillation division ratio
At on-chip oscillator mode, division ratio of on-chip oscillator for
CPU clock is selected by setting value of on-chip oscillation divi-
sion ratio selection register. The division ratio of on-chip oscillation
for CPU clock is selected from among 1/1, 1/2, 1/8, 1/128. The op-
eration clock for the peripheral function block is not changed by
setting value of this register.
■ Notes on On-chip Oscillation Division Ratio
When system is released from reset, ROSC/8 (on-chip oscillator
middle-speed mode) is selected for CPU clock.
When state transition from the ceramic or RC oscillation to on-
chip oscillator, ROSC/8 (on-chip oscillator middle-speed mode)
is selected for CPU clock.
When the MCU operates by on-chip oscillator for the main clock
without external oscillation circuit, connect XIN pin to VCC
through a resistor and leave XOUT pin open.
Set “10010x002” (x = 0 or 1) to CPUM.
Fig. 79 Structure of on-chip oscillation division ratio selection register
On-chip oscillation division ratio selection register
(RODR: address 003716, initial value: 0216)
On-chip oscillator division ratio
b1 b0
0 0: On-chip oscillator double-speed mode (ROSC/1)
0 1: On-chip oscillator high-speed mode (ROSC/2)
1 0: On-chip oscillator middle-speed mode (ROSC/8)
1 1: On-chip oscillator low-speed mode (ROSC/128)
Not used (returns “0” when read)
b7
b0
Clock division ratio, XIN oscillation control, on-chip oscillator control
The state transition shown in Fig. 82 can be performed by setting
the clock division ratio selection bits (bits 7 and 6), XIN oscillation
control bit (bit 4), on-chip oscillator oscillation control bit (bit 3) of
CPU mode register. Be careful of notes on use in Fig. 82.
Count source (Timer 1, Timer A, Timer B, Timer X, Serial I/O, Serial
I/O2, A/D converter, Watchdog timer)
The count sources of these functions are affected by the clock divi-
sion selection bit of the CPU mode register.
The f(XIN) clock is supplied to the watchdog timer when selecting
f(XIN) as the CPU clock.
The on-chip oscillator output is supplied to these functions when se-
lecting the on-chip oscillator output as the CPU clock.
However, the watchdog timer is also affected by the function set
ROM.
相关PDF资料 |
PDF描述 |
|---|---|
| M38047M8-XXXHP | 8-BIT, MROM, 8.4 MHz, MICROCONTROLLER, PQFP64 |
| M102E1000.0000DL | 1000 MHz, OTHER CLOCK GENERATOR, MDIP24 |
| M102P0200.0000DL | 200 MHz, OTHER CLOCK GENERATOR, MDIP24 |
| M30201F6-FP | 16-BIT, FLASH, 10 MHz, MICROCONTROLLER, PQFP56 |
| M30800SGP | 16-BIT, MROM, 20 MHz, MICROCONTROLLER, PQFP100 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| M37546G2SP#U0 | 功能描述:MCU 3/5V 8K 32-SDIP QZ-ROM 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) |
| M37546G2-XXXGP | 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M37546G2-XXXHP | 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M37546G2-XXXSP | 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M37546G4GP | 功能描述:MCU 2/5V 16K 32-LQFP 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) |
发布紧急采购，3分钟左右您将得到回复。