- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄69010 > M34502M2-XXXFP 4-BIT, MROM, MICROCONTROLLER, PDSO24 PDF資料下載
參數(shù)資料
| 型號： | M34502M2-XXXFP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 4-BIT, MROM, MICROCONTROLLER, PDSO24 |
| 封裝： | 5.30 X 10.10 MM, 0.80 MM PITCH, PLASTIC, SSOP-24 |
| 文件頁數(shù)： | 62/96頁 |
| 文件大?。?/td> | 958K |
| 代理商： | M34502M2-XXXFP |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁當前第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁第89頁第90頁第91頁第92頁第93頁第94頁第95頁第96頁
65
Ver 1.4
MITSUBISHI MICROCOMPUTERS
7640 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
Data Bus
In
p
u
tD
ata
B
u
sB
u
ffe
r0
Ou
tp
u
tDa
ta
B
u
sB
u
ff
er
0
U
7
U6
U5
U4
A
00
U2
IBF0
b7
b0
System Bus
OBF0
b1
b0
D
ata
B
u
s
Bu
ff
er
Co
n
tro
lRe
g
is
te
r0
OBF0 IBF0 A0
DQ0
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
S0 R W
RD
WR
DBB
0
DBBS0
In
p
u
tD
ata
B
u
sB
u
ffe
r1
Ou
tp
u
tDa
ta
Bu
sBu
ff
er
1
U
7
U6
U5
U4
A
01
U2
IBF1
b7
b0
OBF1
b1
b0
D
ata
Bu
sB
u
ff
er
Co
n
tro
lRe
g
is
te
r
1
OBF1
IBF1
A0
S1
R
W
RD
WR
DBB
1
DBBS1
Fig. 1.75. Bus Interface Circuit
Fig. 1.76. Data Bus Buffer Interrupt Request Circuit
One-shot pulse
generating circuit
One-shot pulse
generating circuit
One-shot pulse
generating circuit
One-shot pulse
generating circuit
Rising Edge
detection circuit
Rising Edge
detection circuit
Rising Edge
detection circuit
Rising Edge
detection circuit
Input Buffer full interrupt
request signal IBF
Output Buffer Empty interrupt
request signal OBE
Input buffer full flag 0
IBF0
Input buffer full flag 1
IBF1
Output buffer full flag 0
OBF0
Output buffer full flag 1
OBF1
Set interrupt request at this rising edge
IBF0
IBF1
IBF
OBF1
OBE
(OBE1)
OBF0
(OBE0)
1.22 MASTER CPU BUS INTERFACE
This device has a bus interface function with 2 I/O buff-
ers that can be operated in slave mode by control
signals from the master CPU (see Figure 1.75). Bus
Interface Circuit). The bus interface can be connected
directly to either a R/W type of CPU or a CPU with RD
and WR separate signals. Slave mode is selected
with the bit 7 of the data buffer control register 0. The
single data bus buffer mode and the double data bus
buffer mode are selected with bit 7 of the Data Bus
Buffer Control register 1. When selecting the double
data bus buffer mode, Port P72 becomes S1 input.
Prior to enabling the MBI, Port 6 must be placed in in-
put mode by writing 0016 to P6D (001516).
When data is written to the MCU from the master
CPU, an input buffer full interrupt request occurs.
Similarly, when data is read from the master CPU, an
output buffer empty interrupt request occurs.
When the bus interface is operating, DQ0-DQ7 be-
come a 3-state data bus that sends and receives
data, command, and status to and from the master
CPU. At the same time, W, R, S0, S1, and A0 become
host CPU control signal input pins.
The two input buffer full interrupt requests and two out-
put buffer full requests are multiplexed as shown in
Figure 1.76.
The bus interface can be operated under normal
MCU control or under on-chip DMA control for fast
data transfer. If a master CPU has a large amount of
data to be transferred, use of the on-chip DMA con-
troller is highly recommended.
The bus interface signal input level can be pro-
grammed as CMOS level (default) or as TTL level.
Bit7 of the Port Control Register (PTC7) is used for the
input level selection.
相關PDF資料 |
PDF描述 |
|---|---|
| M34502M4-XXXFP | 4-BIT, MROM, MICROCONTROLLER, PDSO24 |
| M34506M4-XXXFP | 4-BIT, MROM, MICROCONTROLLER, PDSO20 |
| M34506E4FP | 4-BIT, OTPROM, MICROCONTROLLER, PDSO20 |
| M34508G4HFP | 4-BIT, MROM, 6 MHz, MICROCONTROLLER, PDSO20 |
| M34508G4GP | 4-BIT, MROM, 6 MHz, MICROCONTROLLER, PDSO20 |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| M34502M4 | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
| M34502M4-XXXFP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
| M34506E4 | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
| M34506E4FP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
| M34506M2 | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
發(fā)布緊急采購，3分鐘左右您將得到回復。