參數(shù)資料
型號: M37478M2TXXXSP
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDIP42
封裝: PLASTIC, SDIP-42
文件頁數(shù): 4/50頁
文件大小: 693K
代理商: M37478M2TXXXSP
In the M37478M4-XXXSP/FP, M37478M2/M4TXXXSP/FP, set this bit to “0”.
In the 7477 group, set this bit to “0”.
In the M37477M4-XXXSP/FP, M37477M2/M4TXXXSP/FP, set this bit to “0”.
9
MITSUBISHI MICROCOMPUTERS
7477/ 7478 GROUP
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
CPU Mode Register
The CPU mode register is allocated at address 00FB16.
This register contains the stack page selection bit.
FUNCTIONAL DESCRIPTION
Central Processing Unit (CPU)
The 7477/7478 group uses the standard 740 family instruction set.
Refer to the table of 740 family addressing modes and machine in-
structions or the SERIES 740 <Software> User’s Manual for
details on the instruction set.
Machine-resident 740 family instructions are as follows:
The FST and SLW instruction cannot be used.
The MUL, DIV, WIT, and STP instruction can be used.
Fig. 1 Structure of CPU mode register
CPU mode register (Address 00FB 16)
b7
b0
Stack page selection bit (Note 1)
0 : In page 0 area
1 : In page 1 area
These bits must always be set to “0”.
P50, P51/XCIN, XCOUT selection bit (Note 2)
0 : P50, P51
1 : XCIN, XCOUT
Notes 1 :
XCOUT drive capacity selection bit (Note 2)
0 : Low
1 : High
Clock (XIN-XOUT) stop bit (Note 2)
0 : Oscillates
1 : Stops
Internal system clock selection bit (Note 2)
0 : XIN-XOUT selected (normal mode)
1 : XCIN-XCOUT selected (low-speed mode)
2 :
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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