參數(shù)資料
型號(hào): MB90F584CPMC
元件分類: 微控制器/微處理器
英文描述: MICROCONTROLLER, PQFP100
封裝: 14 X 14 MM, 1.70 MM HEIGHT, 0.65 MM PITCH, PLASTIC, LQFP-100
文件頁(yè)數(shù): 53/112頁(yè)
文件大?。?/td> 2372K
代理商: MB90F584CPMC
MB90580C Series
DS07-13710-6E
45
5. External Memory Access (External Bus Pin Control Circuit)
The external bus pin control circuit controls external bus pins used to expand the address/data buses of the
CPU outside.
(1) Register configuration
(
2) Block Diagram
Automatic ready function selection register
bit
Address
: 0000A5H
Access
Initial value
External address output control register
bit
Address
: 0000A6H
Access
Initial value
Bus control signal selection register
bit
Address
: 0000A7H
Access
Initial value
ARSR
IOR1 IOR0 HMR1 HMR0
LMR1 LMR0
15
14
13
12
11
10
9
8
(W)
(0)
(W)
(0)
(W)
(1)
(W)
(1)
()
(W)
(0)
(W)
(0)
HACR
E23
E22
E21
E20
E19
E18
E17
E16
76
54
3
2
10
(W)
(0)
(W)
(0)
(W)
(0)
(W)
(0)
(W)
(0)
(W)
(0)
(W)
(0)
(W)
(0)
ECSR
CKE
RYE
HDE IOBS HMBS WRE LMBS
15
14
13
12
11
10
9
8
(W)
(0)
(W)
(0)
(W)
(0)
(W)
(0)
(W)
(0)
(W)
(0)
(W)
(0)
()
P0
RB
P0
P1
P2
P3
P0 data
Access control
P0 direction
Data control
Address control
Access control
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