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| 型号： | MC68331CPV16 |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 55/84页 |
| 文件大小： | 0K |
| 描述： | IC MCU 32BIT 16MHZ 144-LQFP |
| 标准包装： | 60 |
| 系列： | M683xx |
| 核心处理器： | CPU32 |
| 芯体尺寸： | 32-位 |
| 速度： | 16MHz |
| 连通性： | EBI/EMI，SCI，SPI，UART/USART |
| 外围设备： | POR，PWM，WDT |
| 输入/输出数： | 18 |
| 程序存储器类型： | ROMless |
| 电压 - 电源 (Vcc/Vdd)： | 4.5 V ~ 5.5 V |
| 振荡器型： | 内部 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 144-LQFP |
| 包装： | 托盘 |
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MC68331TS/D
59
MSTR — Master/Slave Mode Select
0 = QSPI is a slave device and only responds to externally generated serial data.
1 = QSPI is system master and can initiate transmission to external SPI devices.
MSTR configures the QSPI for either master or slave mode operation. This bit is cleared on reset and
may only be written by the CPU.
WOMQ — Wired-OR Mode for QSPI Pins
0 = Outputs have normal MOS drivers.
1 = Pins designated for output by DDRQS have open-drain drivers.
WOMQ allows the wired-OR function to be used on QSPI pins, regardless of whether they are used as
general-purpose outputs or as QSPI outputs. WOMQ affects the QSPI pins regardless of whether the
QSPI is enabled or disabled.
BITS — Bits Per Transfer
In master mode, when BITSE in a command is set, the BITS field determines the number of data bits
transferred. When BITSE is cleared, eight bits are transferred. Reserved values default to eight bits.
BITSE is not used in slave mode.
The following table shows the number of bits per transfer.
CPOL — Clock Polarity
0 = The inactive state value of SCK is logic level zero.
1 = The inactive state value of SCK is logic level one.
CPOL is used to determine the inactive state value of the serial clock (SCK). It is used with CPHA to
produce a desired clock/data relationship between master and slave devices.
CPHA — Clock Phase
0 = Data is captured on the leading edge of SCK and changed on the following edge of SCK.
1 = Data is changed on the leading edge of SCK and captured on the following edge of SCK.
CPHA determines which edge of SCK causes data to change and which edge causes data to be cap-
tured. CPHA is used with CPOL to produce a desired clock/data relationship between master and slave
devices. CPHA is set at reset.
BITS
Bits per Transfer
0000
16
0001
Reserved
0010
Reserved
0011
Reserved
0100
Reserved
0101
Reserved
0110
Reserved
0111
Reserved
1000
8
1001
9
1010
10
1011
11
1100
12
1101
13
1110
14
1111
15
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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