參數(shù)資料
型號(hào): HD40A4639R
廠商: Hitachi,Ltd.
英文描述: 4-Bit Single-Chip Microcomputer(4位單片微計(jì)算機(jī))
中文描述: 4位單片機(jī)(4位單片微計(jì)算機(jī))
文件頁數(shù): 6/133頁
文件大小: 803K
代理商: HD40A4639R
HD404639R Series
6
Memory Map
ROM Memory Map
The ROM memory map is shown in figure 1 and described below.
0
15
16
63
64
4095
4096
16383
0
1
2
3
4
5
6
7
8
9
$000F
$0010
$0FFF
$1000
$3FFF
$003F
$0040
Vector address
Zero-page subroutine
(64 words)
Pattern
(4,096 words)
Program
(8,192 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, INT routine)
JMPL instruction
(Jump to
INT
routine)
JMPL instruction
(Jump to serial 1, serial 2 routine)
Program
(16,384 words)
For HD404638R, HD40A4638R
For HD404639R, HD40A4639R,
HD407A4639R
8191
8192
$1FFF
$2000
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 (HD404638R, HD40A4638R), $0000–$3FFF (HD404639R,
HD40A4639R, HD407A4639R)):
Used for program coding.
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