參數(shù)資料
型號: HD4074849H
廠商: Hitachi,Ltd.
英文描述: CONTACT
中文描述: 4位單片機
文件頁數(shù): 108/125頁
文件大小: 471K
代理商: HD4074849H
HD404849 Series
108
Programming and verification modes are selected as listed in table 32, the memory map in PROM mode is
shown in figure 90.
Table 32 PROM Mode Selection
Pin
CE
Mode
OE
V
PP
V
PP
V
PP
V
PP
O
0
–O
4
Data input
Programming
Low
High
Verification
High
Low
Data output
Programming inhibited
High
High
High impedance
$0000
$0.
Vector address
Zero-page subroutine
(64 words)
Pattern
(4,096 words)
Program
(16,384 words)
$001F
$0020
.
$0080
.
$007F
$2000
$1FFF
$7FFF
Bit 4
Bit 9
Bit 8
Bit 3
Bit 7
Bit 2
1
1
Bit 6
Bit 1
Bit 5
1
1
1
1
Bit 0
Upper three bits are not to be used
(fill them with 111)
Upper 5 bits
Lower 5 bits
$0000
$000F
$0010
$003F
$0040
$3FFF
$0FFF
$1000
Figure 90 Memory Map in PROM Mode
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