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參數資料
| 型號： | MC9S12C32MFU |
| 廠商： | MOTOROLA INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 16-BIT, FLASH, 25 MHz, MICROCONTROLLER, PQFP80 |
| 封裝： | QFP-80 |
| 文件頁數： | 29/94頁 |
| 文件大?。?/td> | 906K |
| 代理商： | MC9S12C32MFU |
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Device User Guide — 9S12C32DGV1/D V01.01
35
4.2.1.1 Normal Single-Chip Mode
There is no external expansion bus in this mode. All pins of Ports A, B and E are configured as general
purpose I/O pins Port E bits 1 and 0 are available as general purpose input only pins with internal pull-ups
enabled. All other pins of Port E are bidirectional I/O pins that are initially configured as high-impedance
inputs with internal pull-ups enabled. Ports A and B are configured as high-impedance inputs with their
internal pull-ups disabled.
The pins associated with Port E bits 6, 5, 3, and 2 cannot be configured for their alternate functions IPIPE1,
IPIPE0, LSTRB, and R/W while the MCU is in single chip modes. In single chip modes, the associated
control bits PIPOE, LSTRE, and RDWE are reset to zero. Writing the opposite state into them in single
chip mode does not change the operation of the associated Port E pins.
In normal single chip mode, the MODE register is writable one time. This allows a user program to change
the bus mode to special single chip or narrow or wide expanded mode and/or turn on visibility of internal
accesses.
Port E, bit 4 can be configured for a free-running E clock output by clearing NECLK=0. Typically the only
use for an E clock output while the MCU is in single chip modes would be to get a constant speed clock
for use in the external application system.
4.2.1.2 Normal Expanded Wide Mode
In expanded wide modes, Ports A and B are configured as a 16-bit multiplexed address and data bus and
Port E bit 4 is configured as the E clock output signal. These signals allow external memory and peripheral
devices to be interfaced to the MCU.
Port E pins other than PE4/ECLK are configured as general purpose I/O pins (initially high-impedance
inputs with internal pull-up resistors enabled). Control bits PIPOE, NECLK, LSTRE, and RDWE in the
PEAR register can be used to configure Port E pins to act as bus control outputs instead of general purpose
I/O pins.
It is possible to enable the pipe status signals on Port E bits 6 and 5 by setting the PIPOE bit in PEAR, but
it would be unusual to do so in this mode. Development systems where pipe status signals are monitored
would typically use the special variation of this mode.
The Port E bit 2 pin can be reconfigured as the R/W bus control signal by writing “1” to the RDWE bit in
PEAR. If the expanded system includes external devices that can be written, such as RAM, the RDWE bit
would need to be set before any attempt to write to an external location. If there are no writable resources
in the external system, PE2 can be left as a general purpose I/O pin.
The Port E bit 3 pin can be reconfigured as the LSTRB bus control signal by writing “1” to the LSTRE bit
in PEAR. The default condition of this pin is a general purpose input because the LSTRB function is not
needed in all expanded wide applications.
The Port E bit 4 pin is initially configured as ECLK output with stretch. The E clock output function
depends upon the settings of the NECLK bit in the PEAR register, the IVIS bit in the MODE register and
the ESTR bit in the EBICTL register. The E clock is available for use in external select decode logic or as
a constant speed clock for use in the external application system.
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相關代理商/技術參數 |
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| MC9S12C32MFU25 | 功能描述:IC MCU 32K FLASH 25MHZ 80-QFP RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:HCS12 標準包裝:250 系列:56F8xxx 核心處理器:56800E 芯體尺寸:16-位 速度:60MHz 連通性:CAN，SCI，SPI 外圍設備:POR，PWM，溫度傳感器，WDT 輸入/輸出數:21 程序存儲器容量:40KB（20K x 16） 程序存儲器類型:閃存 EEPROM 大小:- RAM 容量:6K x 16 電壓 - 電源 (Vcc/Vdd):2.25 V ~ 3.6 V 數據轉換器:A/D 6x12b 振蕩器型:內部 工作溫度:-40°C ~ 125°C 封裝/外殼:48-LQFP 包裝:托盤 配用:MC56F8323EVME-ND - BOARD EVALUATION MC56F8323 |
| MC9S12C32MFUE16 | 功能描述:16位微控制器 - MCU GOLDFISH RoHS:否 制造商:Texas Instruments 核心:RISC 處理器系列:MSP430FR572x 數據總線寬度:16 bit 最大時鐘頻率:24 MHz 程序存儲器大小:8 KB 數據 RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:VQFN-40 安裝風格:SMD/SMT |
| MC9S12C32MFUE25 | 功能描述:16位微控制器 - MCU GOLDFISH RoHS:否 制造商:Texas Instruments 核心:RISC 處理器系列:MSP430FR572x 數據總線寬度:16 bit 最大時鐘頻率:24 MHz 程序存儲器大小:8 KB 數據 RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:VQFN-40 安裝風格:SMD/SMT |
| MC9S12C32MFUE25 | 制造商:Freescale Semiconductor 功能描述:16BIT FLASH MCU CAN SMD QFP80 制造商:Freescale Semiconductor 功能描述:16BIT FLASH MCU, CAN, SMD, QFP80 |
| MC9S12C32MFUE25R | 功能描述:16位微控制器 - MCU GOLDFISH HCS12SC32 RoHS:否 制造商:Texas Instruments 核心:RISC 處理器系列:MSP430FR572x 數據總線寬度:16 bit 最大時鐘頻率:24 MHz 程序存儲器大小:8 KB 數據 RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:VQFN-40 安裝風格:SMD/SMT |
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