MC68332ACFC25 Freescale Semiconductor, MC68332ACFC25 Datasheet - Page 73

• Manufacturer Part Number: MC68332ACFC25
• Description: IC MCU 32BIT 25MHZ 132-PQFP
• Manufacturer: Freescale Semiconductor
• Series: M683xxr

Specifications of MC68332ACFC25

• Core Processor: CPU32
• Core Size: 32-Bit
• Speed: 25MHz
• Connectivity: EBI/EMI, SCI, SPI, UART/USART
• Peripherals: POR, PWM, WDT
• Number Of I /o: 15
• Program Memory Type: ROMless
• Ram Size: 2K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 132-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -

MSTR — Master/Slave Mode Select
WOMQ — Wired-OR Mode for QSPI Pins
BITS — Bits Per Transfer
CPOL — Clock Polarity
CPHA — Clock Phase
SPBR — Serial Clock Baud Rate
MC68332
MC68332TS/D
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 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.
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 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 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.
The QSPI uses a modulus counter to derive SCK baud rate from the MCU system clock. Baud rate is
selected by writing a value from 2 to 255 into the SPBR field. The following equation determines the
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.
0 = Outputs have normal MOS drivers.
1 = Pins designated for output by DDRQS have open-drain drivers.
0 = The inactive state value of SCK is logic level zero.
1 = The inactive state value of SCK is logic level one.
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.
Freescale Semiconductor, Inc.
For More Information On This Product,
BITS
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
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Bits per Transfer
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
16
10
11
12
13
14
15
8
9
MOTOROLA
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