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參數(shù)資料
| 型號： | UPD17225GT |
| 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位單片機的小型通用紅外遙控器 |
| 文件頁數(shù)： | 18/84頁 |
| 文件大?。?/td> | 393K |
| 代理商： | UPD17225GT |
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μ
PD17225, 17226, 17227, 17228
18
Data Sheet U12643EJ2V0DS00
2.4.3
General register (GR)
A general register is a 16-word register on the data memory and used for arithmetic operations and transfer of data
to and from the data memory.
(1) Configuration of general register
Figure 2-6 shows the configuration of the general register.
A general register occupies 16 nibbles (16
×
4 bits) on a selected row address of the data memory.
The row address is selected by the general register pointer (RP) of the system register. The RP having four
significant bits in the
μ
PD17227 and 17228 can point to any row address in the range of 0H to 7H of each
bank (BANK0 and BANK1).
In the
μ
PD17225 and 17226, 3 bits are available in the RP. These bits can point to any row address in the
range of 0H to 7H of BANK0.
(2) Functions of the general register
The general register enables an arithmetic operation and data transfer between the data memory and a
selected general register by a single instruction. As a general register is a part of the data memory, you can
say that the general register enables arithmetic operation and data transfer between two locations of the data
memory. Similarly, the general register can be accessed by a data memory manipulation instruction as it is
a part of the data memory.
Figure 2-6. Configuration of General Registers
(RP)
RPH
RPL
b
3
b
2
b
1
b
0
b
3
b
2
b
1
b
0
0
0
0
0
0
0
0
0
1
1
0
0
1
0
2
0
0
1
1
3
0
1
0
0
4
0
1
0
1
5
0
1
1
0
6
0
1
1
1
7
1
0
0
0
0
1
0
0
1
1
1
0
1
0
2
1
0
1
1
3
1
1
0
0
4
1
1
0
1
5
1
1
1
0
6
1
1
1
1
7
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
RP
System registers
Port register
General registers (16 nibbles)
General register pointer
BANK0
BANK1
Column address
General register
settable range
F
i
x
e
d
t
o
0
A
s
s
i
g
n
e
d
t
o
B
C
D
f
l
a
g
→
→
→
→
→
→
→
→
→
→
→
→
→
→
→
→
System registers
Example
General registers
when
RP = 0000010B
←
Same system
registers exist
F
i
x
e
d
t
o
0
F
i
x
e
d
t
o
0
ter
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| UPD17225 | 4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER |
| UPD17225CT | 4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER |
| UPD17225MC | 4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER |
| UPD17226 | 4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER |
| UPD17226CT | 4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| UPD17225GT-XXX | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:MICROCONTROLLER|4-BIT|UPD17K CPU|CMOS|SOP|28PIN|PLASTIC |
| UPD17225MC | 制造商:NEC 制造商全稱:NEC 功能描述:4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER |
| UPD17225MC-XXX-5A4 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Microcontroller |
| UPD17226 | 制造商:NEC 制造商全稱:NEC 功能描述:4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER |
| UPD17226CT | 制造商:NEC 制造商全稱:NEC 功能描述:4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER |
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