參數(shù)資料
型號(hào)： M37905M8C-XXXSP
元件分類(lèi)： 微控制器/微處理器
英文描述： 16-BIT, MROM, 20 MHz, MICROCONTROLLER, PDIP64
封裝： 0.750 INCH, 1.78 MM PITCH, PLASTIC, SDIP-64
文件頁(yè)數(shù)： 21/103頁(yè)
文件大?。?/td> 1402K
代理商： M37905M8C-XXXSP
23
M37905M4C-XXXFP, M37905M4C-XXXSP
M37905M6C-XXXFP, M37905M6C-XXXSP
M37905M8C-XXXFP, M37905M8C-XXXSP
PRELIMINAR
Y
Notice:
This
is not
a final
specification.
Some
parametric
limits
are
subject
to change.
16-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
Interrupts caused by the address matching detection and when di-
viding by zero are software interrupts and are not included in Figure
14.
Other interrupts previously mentioned are A-D converter, UART, etc.
interrupts. The priority of these interrupts can be changed by chang-
ing the priority level in the corresponding interrupt control register by
software.
Figure 15 shows a diagram of the interrupt priority detection circuit.
When an interrupt is caused, each interrupt device compares its own
priority with the priority from above and if its own priority is higher,
then it sends the priority below and requests the interrupt. If the pri-
orities are the same, the one above has priority.
This comparison is repeated to select the interrupt with the highest
priority among the interrupts that are being requested. Finally the
selected interrupt is compared with the processor interrupt priority
level (IPL) contained in the processor status register (PS) and the
request is accepted if it is higher than IPL and the interrupt disable
flag I is “0”. The request is not accepted if flag I is “1”. The reset and
watchdog timer interrupts are not affected by the interrupt disable
flag I.
When an interrupt is accepted, the contents of the processor status
register (PS) is saved to the stack and the interrupt disable flag I is
set to “1”.
Furthermore, the interrupt request bit of the accepted interrupt is
cleared to “0” and the processor interrupt priority level (IPL) in the
Table 4. Addresses of interrupt control registers
Interrupt control registers
INT3 interrupt control register
INT4 interrupt control register
A-D interrupt control register
UART0 transmit interrupt control register
UART0 receive interrupt control register
UART1 transmit interrupt control register
UART1 receive interrupt control register
Timer A0 interrupt control register
Timer A1 interrupt control register
Timer A2 interrupt control register
Timer A3 interrupt control register
Timer A4 interrupt control register
Timer B0 interrupt control register
Timer B1 interrupt control register
Timer B2 interrupt control register
INT0 interrupt control register
INT1 interrupt control register
INT2 interrupt control register
UART2 transmit interrupt control register
UART2 receive interrupt control register
Timer A5 interrupt control register
Timer A6 interrupt control register
Timer A7 receive control register
Timer A8 interrupt control register
Timer A9 interrupt control register
INT5 interrupt control register
INT6 interrupt control register
INT7 interrupt control register
Addresses
00006E16
00006F16
00007016
00007116
00007216
00007316
00007416
00007516
00007616
00007716
00007816
00007916
00007A16
00007B16
00007C16
00007D16
00007E16
00007F16
0000F116
0000F216
0000F516
0000F616
0000F716
0000F816
0000F916
0000FD16
0000FE16
0000FF16
Fig. 14 Interrupt priority
Fig. 15 Interrupt priority detection
Watchdog
timer
Reset
Priority is determined by hardware
A-D converter, UART, etc. interrupts
Priority can be changed by software inside .
INT2
INT1
INT0
Reset
A-D
UART1 transmit
UART1 receive
UART0 transmit
UART0 receive
Timer B2
Timer B1
Timer B0
Timer A4
Timer A3
Timer A2
Timer A1
Timer A0
Watchdog timer
IPL
Interrupt request
Level 0
Interrupt disable flag I
INT 3
INT 7
INT 6
INT 5
INT4
Timer A9
Timer A8
Timer A7
Timer A6
Timer A5
UART2 transmit
UART2 receive
相關(guān)PDF資料
PDF描述
M37905M8C-XXXFP 16-BIT, MROM, 20 MHz, MICROCONTROLLER, PQFP64
M37905M6C-XXXSP 16-BIT, MROM, 20 MHz, MICROCONTROLLER, PDIP64
M37906M4H-XXXFP 16-BIT, MROM, 20 MHz, MICROCONTROLLER, PDSO42
M37906M6C-XXXFP 16-BIT, MROM, 20 MHz, MICROCONTROLLER, PDSO42
M37906M8C-XXXFP 16-BIT, MROM, 20 MHz, MICROCONTROLLER, PDSO42
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