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參數(shù)資料
| 型號(hào)： | M38C37ECMFP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, OTPROM, 4 MHz, MICROCONTROLLER, PQFP80 |
| 封裝： | 14 X 20 MM, 0.80 MM PITCH, PLASTIC, QFP-80 |
| 文件頁(yè)數(shù)： | 65/221頁(yè) |
| 文件大?。?/td> | 1919K |
| 代理商： | M38C37ECMFP |
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Programming Model
Interrupt Controller
9-7
9.6 Programming Model
This section describes registers that you may need to configure so that the interrupt controller can properly
process interrupts, generate vector numbers, and post interrupts to the core.
NOTE:
When programmed as edge-triggered interrupts, all external interrupts
(INT[3:0], IRQ1, IRQ2, IRQ3, and IRQ6) can be cleared by writing a 1 to
the corresponding status bit in the interrupt status register (ISR). When
programmed as level-triggered interrupts, these interrupts are cleared at
the requesting sources. All interrupts from internal peripheral devices are
level-triggered interrupts to the interrupt handler, and they are cleared at
the requesting sources.
9.6.1 Interrupt Vector Register
The interrupt vector register (IVR) is used to program the upper 5 bits of the interrupt vector number.
During the interrupt acknowledge cycle, the lower 3 bits, encoded from the interrupt level, are combined
with the upper 5 bits to form an 8-bit vector number. The CPU uses the vector number to generate a vector
address. During system startup, this register should be configured so that the MC68VZ328’s external and
internal interrupts can be handled properly by their software handlers. If an interrupt occurs before the IVR
has been programmed, the interrupt vector number 0x0F is returned to the CPU as an uninitialized
interrupt, which has the interrupt vector 0x3C.
The register bit assignments are shown in the following register display, and their settings are described in
IVR
Interrupt Vector Register
0x(FF)FFF300
BIT 7
654
32
1
BIT 0
VECTOR
TYPE
rw
RESET
0
000
00
0x00
Table 9-3. Interrupt Vector Register Description
Name
Description
Settings
VECTOR
Bits 7–3
Vector Number—This field represents the upper 5 bits of the inter-
rupt vector number.
See description.
Reserved
Bits 2–0
Reserved
These bits are reserved
and should be set to 0.
相關(guān)PDF資料 |
PDF描述 |
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| M38C37ECMFS | 8-BIT, UVPROM, 4 MHz, MICROCONTROLLER, CQCC80 |
| M38C37ECAXXXFP | 8-BIT, OTPROM, 4 MHz, MICROCONTROLLER, PQFP80 |
| M38D59TFFP | 8-BIT, FLASH, 6.25 MHz, MICROCONTROLLER, PQFP80 |
| M38K07M4L-XXXFP | 8-BIT, MROM, 12 MHz, MICROCONTROLLER, PQFP64 |
| M38K07M4L-XXXHP | 8-BIT, MROM, 12 MHz, MICROCONTROLLER, PQFP64 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M38C59GFHP#U0 | 制造商:Renesas Electronics Corporation 功能描述:MCU 2/4V 60K PB-FREE - Trays |
| M38D20F1XXXFP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M38D20F1XXXHP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M38D20F2XXXFP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M38D20F2XXXHP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
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