MC68332ACFC25 Freescale Semiconductor, MC68332ACFC25 Datasheet - Page 123

• 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: -

6.1 General
MC68332
USER’S MANUAL
This section is an overview of queued serial module (QSM) function. Refer to the QSM
Reference Manual (QSMRM/AD) for complete information about the QSM.
The QSM contains two serial interfaces, the queued serial peripheral interface (QSPI)
and the serial communication interface (SCI). Figure 6-1 is a block diagram of the
QSM.
The QSPI provides easy peripheral expansion or interprocessor communication
through a full-duplex, synchronous, three-line bus. Four programmable peripheral chip
selects can select up to 16 peripheral devices. A self-contained RAM queue allows up
to sixteen serial transfers of eight to sixteen bits each or transmission of a 256-bit data
stream without CPU intervention. A special wraparound mode supports continuous
sampling of a serial peripheral, with automatic QSPI RAM updating, for efficient inter-
facing to A/D converters.
The SCI provides a standard nonreturn to zero (NRZ) mark/space format. It will oper-
ate in either full- or half-duplex mode. There are separate transmitter and receiver en-
able bits and dual data buffers. A modulus-type baud rate generator provides rates
from 64 to 524 kbaud with a 16.78-MHz system clock, or 110 to 655 kbaud with a
20.97-MHz system clock. Word length of either eight or nine bits can be selected. Op-
tional parity generation and detection provide either even or odd parity check capabil-
IMB
SECTION 6 QUEUED SERIAL MODULE
Freescale Semiconductor, Inc.
For More Information On This Product,
Figure 6-1 QSM Block Diagram
INTERFACE
LOGIC
QSPI
SCI
QUEUED SERIAL MODULE
Go to: www.freescale.com
PORT QS
MISO/PQS0
MOSI/PQS1
SCK/PQS2
PCS0/SS/PQS3
PCS1/PQS4
PCS2/PQS5
PCS3/PQS6
RXD
TXD/PQS7
QSM BLOCK
6-1