參數(shù)資料
型號(hào)： M37640E8FP
廠商： Mitsubishi Electric Corporation
英文描述： SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
中文描述： 單芯片8位CMOS微機(jī)
文件頁(yè)數(shù)： 67/96頁(yè)
文件大?。?/td> 1477K
代理商： M37640E8FP
67
Ver 1.4
MITSUBISHI MICROCOMPUTERS
7640 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
Fig. 1.79. Data Bus Buffer Status Register 1 (DBBS1)
Fig. 1.80. Data Bus Buffer Control Register 1 (DBBC1)
DBBS17
DBBS15
DBBS14
DBBS13
DBBS12
DBBS11
DBBS10
MSB
7
LSB
0
Address: 004D
16
Access: R/W
Reset: 00
16
DBBS10
DBBS16
Output Buffer Full (OBF
) Flag (bit 0)
0: Output buffer empty.
1: Output buffer full.
Input Buffer Full (BF0
) Flag (bit 1)
0: Input buffer empty.
1: Input buffer full.
User Definable (U2) Flag (bit 3)
A
0
(A
01
) Flag (bit 2)
Indicates the A
status when IBF flag is set
User Definable (U4) Flag (bit 4)
User Definable (U5) Flag (bit 5)
User Definable (U6) Flag (bit 6)
User Definable (U7) Flag (bit 7)
DBBS11
DBBS12
DBBS13
DBBS14
DBBS15
DBBS16
DBBS17
DBBC17
Reserved
DBBC14
DBBC13
DBBC12
DBBC11
DBBC10
MSB
7
LSB
0
Address: 004E
6
Access: R/W
Reset: 00
16
DBBC10
Reserved
OBF
Output Selection Bit (bit 0)
0: P7
4
pin is operated as GPIO
1: P7
pin is operated as PBF1 output pin if DBBC17 = “1”
IBF1 Output Selection Bit (bit 1)
0: P7
3
pin is operated as GPIO
1: P7
pin is operated as IBF
1
output pin if DBBC17= “1”
IBF1 Interrupt Selection Bit (bit 2)
0: IBF
interrupt is generated by both write-data (A
0
= “0”) and write-
command (A0 = “1”)
1: IBF
interrupt is generated by write-command (A
0
= “1”)only
Output Buffer 1 Empty interrupt disable Bit (bit 3)
0: Enabled
1: Disabled
Input Buffer 0 Full interrupt disable Bit (bit 4)
0: Enabled
1: Disabled
Reserved (Read/Write “0”)
Reserved (Read/Write “0”)
Data Bus Buffer Function Selection Bit (bit 7)
0: Single data bus buffer - P7
2
is used as BPIO
1: Double data bus buffer - P7
2
is used as S
1
input
DBBC11
DBBC12
DBBC13
DBBC14
DBBC15
DBBC16
DBBC17
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