參數(shù)資料
型號(hào)： UPD17236
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)： 22/92頁(yè)
文件大?。?/td> 378K
代理商： UPD17236
Data Sheet U14360EJ1V0DS00
μ
PD17230, 17231, 17232, 17233, 17234, 17235, 17236
22
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 2-8 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 as shown
in Figure 2-6.
The row address is selected by the general register pointer (RP) of the system register. The RP having four
significant bits can point to any row address in the range of 0H to 7H of each bank (BANK0 and BANK1).
(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 2-8. 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
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UPD17236GT 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
UPD17236MC 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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