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參數(shù)資料
| 型號： | HD404324 |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | 4-bit HMCS400-series microcomputer(4位單片微計算機) |
| 中文描述： | 4位HMCS400系列微電腦（4位單片微計算機） |
| 文件頁數(shù)： | 69/94頁 |
| 文件大?。?/td> | 573K |
| 代理商： | HD404324 |
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HD404328 Series
69
PROM Mode Description
Programming the Built-In ROM
The MCU’s built-in ROM is programmed in PROM mode in which the pins are arranged as shown in
figure 42. PROM mode is set by pulling
TEST
,
M
0
, and
M
1
low, and RESET high as shown in figure 43.
In PROM mode, the MCU does not operate, but it can be programmed in the same way as any other
commercial 27256-type EPROM using a standard PROM programmer and a 64-to-28–pin socket adapter.
Recommended PROM programmers and socket adapters are listed in table 35.
Since an HMCS400-series instruction is ten bits long, the HMCS400-series MCU has a built-in conversion
circuit to enable use of a general-purpose PROM programmer. This circuit splits each instruction into a
lower five bits and an upper five bits that are read from or written to consecutive addresses. This means
that if, for example, 16 kwords of built-in PROM are to be programmed by a general-purpose PROM
programmer, a 32-kbyte address space ($0000–$7FFF) must be specified.
V
CC
O
0
V
V
PP
V
CC
CE
A
4
A
3
A
2
A
1
O
7
O
6
O
5
O
4
O
3
O
2
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
64
63
62
61
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
HD4074329S
HD4074329US
HD4074329C
HD4074329FS
HD4074329UFS
20 21 22 23 24 25 26 27 28 29 30 31 32
64 63 62 61 60 59 58 57 56 55 54 53 52
A
7
A
8
A
0
A
10
A
11
A
12
A
13
A
14
A
9
V
PP
A
5
A
6
O
4
O
3
O
2
O
1
O
0
M
0
M
1
V
V
CC
OE
TEST
V
GND
RESET
GND
Note:
GND
O
1
A
9
A
5
A
6
O
4
O
3
O
2
M
0
M
1
A
7
A
8
A
0
A
10
A
11
A
12
A
13
A
14
TEST
V
GND
RESET
GND
GND
O
1
O
0
CE
A
4
A
3
A
2
A
1
O
7
O
6
O
5
O
4
O
3
OE
O
2
O
1
O
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
V
CC
V
V
V
V
Externally connect pins of the same name. This is not
necessary if one of the sockets listed in table 35 is used.
CC
CC
CC
CC
CC
CC
CC
CC
Figure 42 Pin Arrangement in PROM Mode
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| HD404324FS | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:microcomputer designed to increase program productivity |
| HD404324H | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:microcomputer designed to increase program productivity |
| HD404324S | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:microcomputer designed to increase program productivity |
| HD404324U | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:microcomputer designed to increase program productivity |
| HD404324UFS | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:microcomputer designed to increase program productivity |
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