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參數(shù)資料
| 型號(hào)： | HD404449 |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | 4-bit HMCS400-Series microcomputer(4位單片微計(jì)算機(jī)) |
| 中文描述： | 4位HMCS400系列微機(jī)（4位單片微計(jì)算機(jī)） |
| 文件頁(yè)數(shù)： | 6/123頁(yè) |
| 文件大?。?/td> | 726K |
| 代理商： | HD404449 |
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HD404449 Series
6
Memory Map
ROM Memory Map
The ROM memory map is shown in figure 1 and described below.
0
15
16
63
64
4,095
4,096
16,383
0
1
2
3
4
5
6
7
8
9
$000F
$0010
$0FFF
$1000
$1FFF
$2000
$3FFF
$003F
$0040
Vector address
Zero-page subroutine
(64 words)
Pattern
(4,096 words)
HD404448
Program
(8,192 words)
HD404449, HD4074449
Program
(16,384 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 B, INT routine)
JMPL instruction
(Jump to timer C, INT routine)
JMPL instruction
(Jump to timer D, A/D routine)
JMPL instruction
(Jump to
INT
routine)
JMPL instruction
(Jump to serial 1, serial 2 routine)
8,191
8,192
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–$1FFF (HD404448), $0000–$3FFF (HD404449, HD4074449)):
Used for
program coding.
RAM Memory Map
The MCU contains a 1,152-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.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HD404449H | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:HD404449 SERIES |
| HD404449SERIES | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| HD404449TF | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-Bit Microcontroller |
| HD404458 | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:4-bit HMCS400-series microcomputers |
| HD404458H | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:4-bit HMCS400-series microcomputers |
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