參數(shù)資料
型號: UPD65944
英文描述: CMOS-9HD Family.EA-9HD Family Block Library Ver.6.0 | Block Library[12/2000]
中文描述: CMOS的9HD Family.EA - 9HD家庭座圖書館Ver.6.0 |座圖書館[12/2000]
文件頁數(shù): 11/64頁
文件大小: 399K
代理商: UPD65944
11
μ
PD64A, 65
Data Sheet U14380EJ2V0DS00
Figure 2-4. Data Memory Organization
R0
R1
R2
R3
R4
R5
R6
R7
R8
R9
RA
RB
RC
RD
RE
RF
R
10
R
00
R
11
R
01
R
12
R
02
R
13
R
03
R
14
R
04
R
15
R
05
R
16
R
06
R
17
R
07
R
18
R
08
R
19
R
09
R
1A
R
0A
R
1B
R
0B
R
1C
R
0C
R
1D
R
0D
R
1E
R
0E
R
1F
R
0F
DP (refer to
2.6 Data Pointer (DP)
)
ASR (refer to
2.3 Address Stack Register (ASR (RF))
)
R
1n
(high-order 4 bits) R
0n
(low-order 4 bits)
2.6 Data Pointer (DP): 11 Bits
The ROM data table can be referenced by setting the ROM address in the data pointer to call the ROM contents.
The low-order 8 bits of the ROM address are specified by R0 of the data memory; and the high-order 3 bits by
bits 4, 5, and 6 of the P3 register (CR0).
When reset, the pointer contents become “000H”.
Figure 2-5. Data Pointer Organization
Note
Set DP
10
of the
μ
PD64A to "0".
2.7 Accumulator (A): 4 Bits
The accumulator, which refers to a register consisting of 4 bits, plays a leading role in performing various
operations.
When reset, the accumulator contents are left undefined.
Figure 2-6. Accumulator Organization
A
3
A
2
A
1
A
0
A
R
00
DP
9
DP
8
DP
7
DP
6
DP
5
DP
4
DP
3
DP
2
DP
1
DP
0
R
10
R0
b
4
b
5
P3
Register
P3
DP
10
b
6
Note
相關(guān)PDF資料
PDF描述
UPD65945 CMOS Gate Array.Embedded Array Ver.2.0 for Package | Design Manual[05/2003]
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UPD65964 CMOS-9HD Family.EA-9HD Family Block Library Ver.6.0 | Block Library[12/2000]
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