參數(shù)資料
型號: MB90487BPF
廠商: FUJITSU LTD
元件分類: 微控制器/微處理器
英文描述: 16-bit Proprietary Microcontroller
中文描述: 16-BIT, MROM, 25 MHz, MICROCONTROLLER, PQFP100
封裝: 14 X 20 MM, 3.35 MM HEIGHT, 0.65 MM PITCH, PLASTIC, QFP-100
文件頁數(shù): 74/120頁
文件大?。?/td> 1241K
代理商: MB90487BPF
MB90480/485 Series
74
18. External Bus Pin Control Circuit
The external bus pin control circuit controls the external bus pins used to expand the CPU address/data bus
connections to external circuits.
(1) Register List
(2) Block Diagram
Auto ready function select register (ARSR)
External address output control register (HACR)
Bus control signal select register (EPCR)
Initial value
0011--00
B
Address : 0000A5
H
Initial value
********
B
Address : 0000A6
H
Initial value
1000*10-
B
Address : 0000A7
H
W
*
: Write only
: Not used
: May be either “1” or “0”
W
W
W
W
W
15
14
13
12
11
10
9
8
IOR0
W
IOR1
HMR1
HMR0
LMR1
LMR0
W
W
W
W
W
W
W
7
6
5
4
3
2
1
0
E22
W
E23
E21
E20
E19
E18
E17
E16
W
W
W
W
W
W
15
14
13
12
11
10
9
8
RYE
W
CKE
HDE
IOBS
HMBS
WRE
LMBS
P3
P2
P1
P0
P0
P5
RB
P4
P5
Access control
Access control
Address control
Data control
P0 direction
P0 data
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參數(shù)描述
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