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| 型號(hào)： | HCS12COREUG |
| 廠商： | 飛思卡爾半導(dǎo)體(中國(guó))有限公司 |
| 英文描述： | Device User Guide V01.18 |
| 中文描述： | 設(shè)備的用戶手冊(cè)V01.18 |
| 文件頁(yè)數(shù)： | 61/130頁(yè) |
| 文件大小： | 512K |
| 代理商： | HCS12COREUG |
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2.3.9 PB[7:0] / FP[7:0] / ADDR[7:0] / DATA[7:0] — Port B I/O Pins
PB7-PB0 are general purpose input or output pins. They can be configured as frontplane segment driver
outputs FP7-FP0 of the LCD. In MCU expanded modes of operation, these pins are used for the
multiplexed external address and data bus.
2.3.10 PE7 / FP22 / XCLKS / NOACC — Port E I/O Pin 7
PE7isageneralpurposeinputoroutputpin.ItcanbeconfiguredasfrontplanesegmentdriveroutputFP22
of the LCD module. The XCLKS signal selects between an external clock or oscillator configuration
during reset.
The XCLKS input selects between an external clock or oscillator configuration. The state of this pin is
latched at the rising edge of RESET. If the input is a logic high the EXTAL pin is configured for an
external clock drive. If input is a logic low an oscillator circuit is configured on EXTAL and XTAL. Since
this pin is an input with a pull-down device during reset, if the pin is left floating, the default configuration
is an oscillator circuit on EXTAL and XTAL.
During MCU expanded modes of operation, the NOACC signal, when enabled, is used to indicate that the
current bus cycle is an unused or “free” cycle. This signal will assert when the CPU is not using the bus.
2.3.11 PE6 / MODB / IPIPE1 — Port E I/O Pin 6
PE6 is a general purpose input or output pin. It is used as a MCU operating mode select pin during reset.
The state of this pin is latched to the MODB bit at the rising edge of RESET. This pin is shared with the
instructionqueuetrackingsignalIPIPE1.Thispinisaninputwithapull-downdevicewhichis onlyactive
when RESET is low.
2.3.12 PE5 / MODA / IPIPE0 — Port E I/O Pin 5
PE5 is a general purpose input or output pin. It is used as a MCU operating mode select pin during reset.
The state of this pin is latched to the MODA bit at the rising edge of RESET. This pin is shared with the
instructionqueuetrackingsignalIPIPE0.Thispinisaninputwithapull-downdevicewhichis onlyactive
when RESET is low.
2.3.13 PE4 / ECLK — Port E I/O Pin 4
PE4 is a general purpose input or output pin. It can be configured to drive the internal bus clock ECLK.
ECLK can be used as a timing reference.
2.3.14 PE3 / FP21 / LSTRB / TAGLO — Port E I/O Pin 3
PE3isageneralpurposeinputoroutputpin.ItcanbeconfiguredasfrontplanesegmentdriveroutputFP21
of the LCD module. In MCU expanded modes of operation, LSTRB is used for the low-byte strobe
function to indicate the type of bus access and when instruction tagging is on, TAGLO is used to tag the
low half of the instruction word being read into the instruction queue.
F
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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.
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| HCS12H | 16-bit Microcontroller |
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| HCS2-120-F | RF Coaxial Switches (DC to 15 GHz) |
| HCS2-121-F | RF Coaxial Switches (DC to 15 GHz) |
相關(guān)代理商/技術(shù)參數(shù) |
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| HCS12DBFAMILYPP | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:HCS12DB Family Product Proposal |
| HCS12DFAMILYPP | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:HCS12 D-Family Product Proposal |
| HCS12H | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:16-bit Microcontroller |
| HCS12HFAMILYPP | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:HCS12 H-Family Product Proposal |
| HCS12XDFAMILYPP | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:HCS12 XD-Family Product Brief |
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