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參數(shù)資料
| 型號： | MC68HC05P18ACDW |
| 廠商： | FREESCALE SEMICONDUCTOR INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDSO28 |
| 封裝： | SOIC-28 |
| 文件頁數(shù)： | 112/130頁 |
| 文件大?。?/td> | 1310K |
| 代理商： | MC68HC05P18ACDW |
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NON-DISCLOSURE
AGREEMENT
REQUIRED
Serial Input/Output Ports (SIOP)
Technical Data
MC68HC05P18A
Serial Input/Output Ports (SIOP)
9.4.2 SIOP Status Register
This register is located at address $000B and contains two bits.
Figure 9-4 shows the position of each bit in the register and indicates
the value of each bit after reset.
SPIF — Serial Port Interface Flag
SPIF is a read-only status bit that is set on the last rising edge of SCK
and indicates that a data transfer has been completed. It has no effect
on any future data transfers and can be ignored. The SPIF bit is
cleared by reading the SSR followed by a read or write of the SDR. If
the SPIF is cleared before the last rising edge of SCK it will be set
again on the last rising edge of SCK. Reset clears the SPIF bit.
DCOL — Data Collision Bit
DCOL is a read-only status bit, which indicates that an illegal access
of the SDR has occurred. The DCOL bit will be set when reading or
writing the SDR after the first falling edge of SCK and before SPIF is
set. Reading or writing the SDR during this time will result in invalid
data being transmitted or received.
The DCOL bit is cleared by reading the SSR (when the SPIF bit is set)
followed by a read or write of the SDR. If the last part of the clearing
sequence is done after another transfer has started, the DCOL bit will
be set again. Reset clears the DCOL bit.
Address:
$000B
Bit 7
654321
Bit 0
Read:
SPIF
DCOL
000000
Write:
Reset:
00000000
= Unimplemented
Figure 9-4. SIOP Status Register (SSR)
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MC68HC05P18ACP | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS Microcontroller Unit |
| MC68HC05P18ADW | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS Microcontroller Unit |
| MC68HC05P18AMDW | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS Microcontroller Unit |
| MC68HC05P18AMP | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS Microcontroller Unit |
| MC68HC05P18AP | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS Microcontroller Unit |
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