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參數(shù)資料
| 型號： | HD404654H |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | 4-Bit Single-Chip Microcomputer |
| 中文描述： | 4位單片機 |
| 文件頁數(shù)： | 6/109頁 |
| 文件大?。?/td> | 430K |
| 代理商： | HD404654H |
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HD404654 Series
6
Memory Map
ROM Memory Map
The ROM memory map is shown in figure 1 and described below.
0
15
16
63
64
0
1
2
3
4
5
6
7
8
9
$000F
$0010
$07FF
$003F
$0040
Vector address
Zero-page subroutine
(64 words)
10
11
12
13
14
15
$0000
$0000
$0001
$0002
$0003
$0004
$0005
$0006
$0007
$0008
$0009
$000A
$000B
$000C
$000D
$000E
$000F
0
1
JMPL instruction
(Jump to
RESET
,
STOPC
routine)
JMPL instruction
(Jump to
INT
routine)
JMPL instruction
(Jump to timer A routine)
JMPL instruction
(Jump to timer D, routine)
JMPL instruction
(Jump to
INT
routine)
JMPL instruction
(Jump to serial 1 routine)
JMPL instruction
(Jump to timer C, routine)
Not used
Program & pattern
(HD404652)
2047
4095
$0FFF
Program & pattern
(HD404654, HD4074654)
Figure 1 ROM Memory Map
Vector Address Area ($0000–$000F):
Reserved for JMPL instructions that branch to the start addresses
of the reset and interrupt routines. After MCU reset or an interrupt, program execution continues from the
vector address.
Zero-Page Subroutine Area ($0000–$003F):
Reserved for subroutines. The program branches to a
subroutine in this area in response to the CAL instruction.
Pattern Area ($0000–$0FFF):
Contains ROM data that can be referenced with the P instruction.
Program Area ($0000–$07FF (HD404652), $0000–$0FFF (HD404654, HD4074654)):
Used for
program coding.
RAM Memory Map
The MCU contains a 512-digit
×
4-bit RAM area consisting of a memory register area, a data area, and a
stack area. In addition, an interrupt control bits area, special register area, and register flag area are mapped
onto the same RAM memory space as a RAM-mapped register area outside the above areas. The RAM
memory map is shown in figure 2 and described as follows.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| HD404654S | 4-Bit Single-Chip Microcomputer |
| HD4074654 | 4-Bit Single-Chip Microcomputer |
| HD4074654H | 4-Bit Single-Chip Microcomputer |
| HD4074654S | 4-Bit Single-Chip Microcomputer |
| HD4046612 | Low-Voltage AS Microcomputers with On-Chip DTMF Generation Circuit(帶雙音多頻電路的低電壓微計算機) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HD404654S | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:4-Bit Single-Chip Microcomputer |
| HD404654SERIES | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| HD4046612 | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:Low-Voltage AS Microcomputers with On-Chip DTMF Generation Circuit |
| HD4046612H | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:Low-Voltage AS Microcomputers with On-Chip DTMF Generation Circuit |
| HD404668 | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:Low-Voltage AS Microcomputers with On-Chip DTMF Generation Circuit |
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