- 您现在的位置：买卖IC网 > PDF目录80411 > M38C13E6HP 8-BIT, OTPROM, 8 MHz, MICROCONTROLLER, PQFP64 PDF资料下载
参数资料
| 型号： | M38C13E6HP |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, OTPROM, 8 MHz, MICROCONTROLLER, PQFP64 |
| 封装： | 10 X 10 MM, PLASTIC, LQFP-64 |
| 文件页数： | 2/59页 |
| 文件大小： | 955K |
| 代理商： | M38C13E6HP |
第1页当前第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
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
38C1 Group
10
[CPU Mode Register (CPUM)] 003B16
The CPU mode register contains the stack page selection bit and
the internal system clock selection bit.
The CPU mode register is allocated at address 003B16.
After system is released from reset, the ring oscillator mode is se-
lected, and the XIN–XOUT oscillation and the XCIN–XCOUT
oscillation are stopped.
Fig. 7 Structure of CPU mode register
Not available
Processor mode bits
b1 b0
0
0 : Single-chip mode
0
1 :
1
0 :
1
1 :
Stack page selection bit
0 : 0 page
1 : 1 page
Main clock selection bit
0 : XIN input signal (XIN–XOUT oscillating)
1 : Built-in ring oscillator
(internal system clock: only frequency divided by 8 is valid.)
Port Xc switch bit
0 : I/O port function (Oscillation stop)
1 : XCIN–XCOUT oscillating function
XIN–XOUT oscillation stop bit
0 : Oscillating
1 : Stopped
Main clock division ratio selection bit
(this bit is invalid when ring oscillator is selected.)
0 : f(XIN)/2 (high-speed mode)
1 : f(XIN)/8 (middle-speed mode)
Internal system clock selection bit
0 : Main clock selected (middle-/high-speed, ring oscillator mode)
1 : XCIN–XCOUT selected (low-speed mode)
CPU mode register
(CPUM : address 003B16, initial value: 6816)
b7
b0
Fig. 8 Switching method of CPU mode register
N
Y
After releasing reset
Start the oscillation
(bits 4 and 5 of CPUM)
Switch the main clock division ratio
selection bits (bit 6 of CPUM)
Main routine
Start with a built-in ring oscillator.
Initial value of CPUM is 6816.
As for the details of condition for
transition among each mode,
refer to the state transition of system clock.
Oscillator starts oscillation.
Do not change bit 3, bit 6 and bit 7
of CPUM until oscillation stabilizes.
Wait by ring oscillator operation until
establishment of oscillator clock
Low-, middle-, or high-speed mode ?
Select internal system clock
(bit 3 or bit 7 of CPUM)
System can operate in ring oscillator
mode until oscillation stabilize.
Select internal system clock.
Do not change bit 3 and bit 7, or bit 6 and bit 7
of CPUM at the same time.
Select main clock division ratio.
Switch to high-speed mode here, if necessary.
When the low-, middle- or high-speed mode is used after the XIN–
XOUT oscillation and the XCIN–XCOUT oscillation are enabled, wait
in the ring oscillator mode until oscillation stabilizes, and then,
switch the operation mode.
When the middle- and high-speed mode are not used (XIN-XOUT
oscillation and external clock input are not performed), connect
XIN to VCC through a resistor.
相关PDF资料 |
PDF描述 |
|---|---|
| MSM80C31F-XXXRS | 8-BIT, MROM, 12 MHz, MICROCONTROLLER, PDIP40 |
| MB91F133APBT | 32-BIT, FLASH, 33 MHz, RISC MICROCONTROLLER, PBGA144 |
| MPC8255ACZUIFBX | 32-BIT, 200 MHz, RISC PROCESSOR, PBGA480 |
| MPC8264ACZUIHBX | 32-BIT, 200 MHz, RISC PROCESSOR, PBGA480 |
| MPC8265ACZUIFBX | 32-BIT, 200 MHz, RISC PROCESSOR, PBGA480 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| M38C13RLFS | 制造商:Renesas Electronics Corporation 功能描述:EMULATION MCU/8BIT CMOS EMULATION CHIP - Bulk |
| M38C24M4-XXXFP | 制造商:MITSUBISHI 制造商全称:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M38C24M4-XXXHP | 制造商:MITSUBISHI 制造商全称:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M38C24M6-051HP | 制造商:MITSUBISHI 制造商全称:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M38C24M6-XXXFP | 制造商:MITSUBISHI 制造商全称:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
发布紧急采购，3分钟左右您将得到回复。