參數(shù)資料
型號(hào): MB90P641APFV
元件分類: 微控制器/微處理器
英文描述: 16-BIT, OTPROM, 17 MHz, MICROCONTROLLER, PQFP100
封裝: PLASTIC, LQFP-100
文件頁數(shù): 46/94頁
文件大小: 1542K
代理商: MB90P641APFV
50
MB90640A Series
12. External Bus Terminal Control Circuit
This circuit controls the external bus terminals intended to extend outwardly the CPU’s address/data bus.
(1)
Register Configuration
(2)
Block Diagram
: 0000A5H
Address :
IOR1
IOR0
HMR1 HMR0
LMR1
LMR0
bit 15
bit 14
bit 13
bit 12
bit 11
bit 10
bit 9
bit 8
WW
W
W
Initial value
0011- - 00B
: 0000A6H
Address :
E23
E22
E21
E20
E19
E18
E17
E16
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
W
WW
Initial value
00000000B
: 0000A7H
Address :
LMBS
WRE
HMBS
IOBS
HDE
RYE
CKE
bit 15
bit 14
bit 13
bit 12
bit 11
bit 10
bit 9
bit 8
—W
W
Initial value
-00*0000B
W
X
*
: Write only
: Unused
: Indeterminate
: “1” or “0” (determined owing to the MD0 to MD2 pin level)
ECSR
HACR
ARSR
Register for selection of AUTO ready function
Register for control of external address output
Register for selection of bus control signal
Access control
Data control
Port 0 data register
Port 0 direction register
Access control
RB
Port 0 pin
Port 1 pin
Port 2 pin
Port 3 pin
Port 4 pin
Port 5 pin
Port 0
Port 1
Port 2
Port 3
Port 4
Port 5
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