參數(shù)資料
型號: M37225ECSP
元件分類: 微控制器/微處理器
英文描述: 8-BIT, OTPROM, 8.1 MHz, MICROCONTROLLER, PDIP42
封裝: 0.600 INCH, 1.78 MM PITCH, PLASTIC, SDIP-42
文件頁數(shù): 34/128頁
文件大小: 1481K
代理商: M37225ECSP
M37225M6/M8/MA/MC-XXXSP, M37225ECSP
Rev.1.00
Nov 01, 2000
page 11 of 124
REJ03B0136-0100Z
8. FUNCTIONAL DESCRIPTION
8.1 CENTRAL PROCESSING UNIT (CPU)
This microcomputer uses the standard 740 Family instruction set.
Refer to the table of 740 Family addressing modes and machine
instructions or the SERIES 740 <Software> User’s Manual for de-
tails on the instruction set.
Machine-resident 740 Family instructions are as follows:
The FST, SLW instruction cannot be used.
The MUL, DIV, WIT and STP instructions can be used.
8.1.1 CPU Mode Register
The CPU mode register contains the stack page selection bit and
internal system clock selection bit. The CPU mode register is allo-
cated at address 00FB16.
Fig. 8.1.1 CPU Mode Register
CPU Mode Register
b7 b6 b5 b4 b3 b2 b1 b0
B
After reset R W
0, 1
2
3 to 5
0
1
Name
Functions
Processor mode bits
(CM0, CM1)
0 0: Single-chip mode
0 1:
1 0:
Not available
1 1:
Fix these bits to “1.”
1
Stack page selection
bit (CM2) (See note)
1
b1 b0
0: 0 page
1: 1 page
1
0
6, 7
0
CPU mode register (CM) [Address 00FB16]
R W
Note: This bit is set to “1” after the reset release.
1
0
Fix these bits to “0.”
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