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參數(shù)資料
| 型號(hào)： | UPD753017 |
| 廠商： | NEC Corp. |
| 元件分類： | 4位微控制器 |
| 英文描述： | 4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER |
| 中文描述： | 4位單片機(jī)的小型通用紅外遙控器 |
| 文件頁(yè)數(shù)： | 16/80頁(yè) |
| 文件大小： | 569K |
| 代理商： | UPD753017 |
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16
μ
PD753012, 753016, 753017
Note
The desired numbers must be set in the XX positions.
Caution Since SBS. 3 is set to “1” after a RESET signal is generated, the CPU operates in the Mk
I mode. When executing an instruction in the Mk II mode, set SBS. 3 to “0” to select the
Mk II mode.
4.2 Setting Method of Stack Bank Select Register (SBS)
Switching between the Mk I mode and Mk II mode can be done by the SBS. Figure 4-1 shows the format.
The SBS is set by a 4-bit memory manipulation instruction. When using the Mk I mode, the SBS must be
initialized to 10XXB
Note
at the beginning of a program. When using the Mk II mode, it must be initialized to 00XXB
Note
.
Figure 4-1. Stack Bank Select Register Format
SBS3
SBS2
SBS1
SBS0
3
2
1
0
Symbol
SBS
Address
F84H
0
0
0
1
1
0
1
1
0
1
0
Memory bank 0
Memory bank 1
Memory bank 2
Memory bank 3
0 must be set in the bit 2 position.
Stack area specification
Mk II mode
Mk I mode
Mode switching specification
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