參數(shù)資料
型號(hào): UPD70741
廠商: NEC Corp.
元件分類: 16位微控制器
英文描述: V821TM 32-/16-BIT MICROPROCESSOR
中文描述: V821TM 32-/16-BIT微處理器
文件頁數(shù): 34/112頁
文件大小: 605K
代理商: UPD70741
μ
PD70741
34
Figure 6-2. on-page/off-page Decision When ROM Having a Page Access Function Is Connected
on/off-page
A'0
A'1
A'2
A'4 A'3
A'17
A'18
A'19
MRQ
a31 a30
(Internal)
A23 A22 A21
mrq a31 a30
a23 a22 a21 a20
A20 A19
a19 a18
A18
a5
a4
a3
A5
A4
A3
A2
A1
MA5
0
MA4
0
Comparison
MA3
0
A0
Internal
address latch
Setting of the
PRC register
V821 output
address
Compa-
rison
Compa-
rison
(Same address block)
Memory access
Comparison
Consecutively readable bits: 16 bits
×
4
In-page address
on/off-page
A2
A'-1
A'0
In-page
address
A'1
A'2
A'4 A'3
A'17
A'18
A'19
MRQ
a31 a30
(Internal)
A23 A22 A21
mrq a31 a30
a23 a22 a21 a20
A20 A19
a19 a18
A18
a5
a4
a3
A5
A4
A3
A1
MA5
0
MA4
0
Comparison
MA3
1
×
A0
Internal
address latch
Setting of the
PRC register
V821 output
address
Compa-
rison
Compa-
rison
(Same address block)
Memory access
Comparison
Consecutively readable bits: 8 bits
×
8
(1) For 16-Mbit ROM (1-Mbit
×
16)
(2) For 16-Mbit ROM (2-Mbit
×
8)
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