參數(shù)資料
型號(hào)： UPD75P3018AGK-9EU
廠商： NEC Corp.
元件分類： 圓形連接器
英文描述： Circular Connector; No. of Contacts:56; Series:MS27467; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:25; Circular Contact Gender:Pin; Circular Shell Style:Straight Plug; Insert Arrangement:25-4 RoHS Compliant: No
中文描述： 4位單片機(jī)
文件頁(yè)數(shù)： 6/64頁(yè)
文件大?。?/td> 356K
代理商： UPD75P3018AGK-9EU
PD75P3018A
14
Data Sheet U11917EJ2V0DS00
4.2 Setting of Stack Bank Selection Register (SBS)
Use the stack bank selection register to switch between Mk I mode and Mk II mode. Figure 4-1 shows the format for doing
this.
The stack bank selection register is set using a 4-bit memory manipulation instruction. When using the Mk I mode, be
sure to initialize the stack bank selection register to 10XXBNote at the beginning of the program. When using the Mk II mode,
be sure to initialize it to 00XXBNote.
Note
Set the desired value for XX.
Figure 4-1. Format of Stack Bank Selection Register
Cautions 1. SBS3 is set to “1” after RESET input, and consequently the CPU operates in Mk I mode. When using
instructions for Mk II mode, set SBS3 to “0” and set Mk II mode before using the instructions.
2. When using Mk II mode, execute a subroutine call instruction and an interrupt instruction after
RESET input and after setting the stack bank selection register.
SBS3
SBS2
SBS1
SBS0
F84H
Address
3
2
1
0
SBS
0
1
0
1
0
1
Symbol
Stack area specification
Memory bank 0
Memory bank 1
Memory bank 2
Memory bank 3
0
Be sure to set bit 2 to 0.
0
1
Mk II mode
Mk I mode
Mode selection specification
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