參數(shù)資料
型號: M38857M8-XXXHP
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 4 MHz, MICROCONTROLLER, PQFP80
封裝: 12 X 12 MM, 0.50 MM PITCH, PLASTIC, LQFP-80
文件頁數(shù): 55/105頁
文件大小: 1403K
代理商: M38857M8-XXXHP
3885 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
50
Fig. 46 Data bus buffer control register
Fig. 45 LPC control register
LPC control register
Bit nameFunction
Bit symbol
SymbolAddressWhen reset
LPCCON002A16
000000002
0 : P80 to P86 as port
1 : LPC interface enable
0 : Data bus buffer 0 disable
1 : Data bus buffer 0 enable
LPC interface enable bit
Data bus buffer 0 enable bit
Data bus buffer 1 enable bit
0 : Data bus buffer 1 disable
1 : Data bus buffer 1 enable
Cannot write to this bit.
Returns “0” when read.
LPCEN
DBBEN0
DBBEN1
b7b6
b5b4b3b2b1b0
W
R
00 : OK
01 : Long & OK
10 : Err
11 : Long & Err
SYNC output select bit
SYNCSEL
0 : Reset release(automatic)
1 : Reset
LPC interface software reset bit
LPCSR
Data bus buffer status register i (i = 0, 1)
Bit nameFunction
Bit symbol
W
R
SymbolAddressWhen reset
DBBSTS0002916
000000002
DBBSTS1002C16
000000002
OBFi
Output buffer full flag
0 : Buffer empty
1 : Buffer full
0 : Buffer empty
1 : Buffer full
This flag indicates the A2
status when IBFi flag is set.
Input buffer full flag
User definable flag
XA2i flag
IBFi
U2i
XA2i
b7b6b5b4b3b2b1b0
U4i
U5i
U6i
U7i
User definable flag
This flag can be freely defined
by user.
This flag can be freely defined
by user.
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