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參數(shù)資料
| 型號： | M37532E8FP |
| 廠商： | Mitsubishi Electric Corporation |
| 英文描述： | SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| 中文描述： | 單芯片8位CMOS微機(jī) |
| 文件頁數(shù)： | 8/50頁 |
| 文件大小： | 524K |
| 代理商： | M37532E8FP |
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SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
7532 Group
MITSUBISHI MICROCOMPUTERS
8
FUNCTIONAL DESCRIPTION
Central Processing Unit (CPU)
The 7532 Group uses the standard 740 family instruction set. Refer
to the table of 740 family addressing modes and machine-language
instructions or the 740 Family Software Manual for details on each
instruction set.
Machine-resident 740 family instructions are as follows:
1. The FST and SLW instructions cannot be used.
2. The MUL and DIV instructions cannot be used.
3. The WIT instruction can be used.
4. The STP instruction can be used.
[CPU Mode Register] CPUM
The CPU mode register contains the stack page selection bit.
This register is allocated at address 003B
16
.
Fig. 8 Switching method of CPU mode register
Switching method of CPU mode register
Switch the CPU mode register (CPUM) at the head of program after
releasing Reset in the following method.
Fig. 7 Structure of CPU mode register
CPU mode register
(CPUM: address 003B
16
)
Stack page selection bit
0 : 0 page
1 : 1 page
Main clock division ratio selection bits
b7 b6
0 0 : f(
φ
) = f(X
IN
)/2 (High-speed mode)
0 1 : f(
φ
) = f(X
IN
)/8 (Middle-speed mode)
1 0 : applied from ring oscillator
1 1 : f(
φ
) = f(X
IN
) (Double-speed mode)
Not used (returns “0” when read)
(Do not write “1” to these bits )
Processor mode bits
b1 b0
0 0 Single-chip mode
0 1
1 0
1 1
Not available
b7 b0
Switch the clock division ratio
selection bits (bits 6 and 7 of CPUM)
After releasing reset
Main routine
Start with a built-in ring oscillator (
Note
)
Switch to other mode except a ring oscillator
(Select one of 1/1, 1/2, and 1/8)
Note
. After releasing reset the operation starts by starting a ring oscillator automatically.
Do not use a ring oscillator at ordinary operation.
Wait until establish ceramic oscillator
clock.
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