MC68376BGMAB20 Freescale Semiconductor, MC68376BGMAB20 Datasheet - Page 183

• Manufacturer Part Number: MC68376BGMAB20
• Description: IC MCU 32BIT 8K ROM 160-QFP
• Manufacturer: Freescale Semiconductor
• Series: M683xxr

Specifications of MC68376BGMAB20

• Core Processor: CPU32
• Core Size: 32-Bit
• Speed: 20MHz
• Connectivity: CAN, EBI/EMI, SCI, SPI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 18
• Program Memory Type: ROMless
• Ram Size: 7.5K x 8
• Voltage - Supply (vcc/vdd): 4.75 V ~ 5.25 V
• Data Converters: A/D 16x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 160-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -

8.1 General
MC68336/376
USER’S MANUAL
SECTION 8 QUEUED ANALOG-TO-DIGITAL CONVERTER MODULE
This section is an overview of the queued analog-to-digital converter (QADC) module.
Refer to the QADC Reference Manual (QADCRM/AD) for a comprehensive discussion
of QADC capabilities.
The QADC consists of an analog front-end and a digital control subsystem, which
includes an intermodule bus (IMB) interface block. Refer to Figure 8-1.
The analog section includes input pins, an analog multiplexer, and two sample and
hold analog circuits. The analog conversion is performed by the digital-to-analog
converter (DAC) resistor-capacitor array and a high-gain comparator.
The digital control section contains the conversion sequencing logic, channel selection
logic, and a successive approximation register (SAR). Also included are the periodic/
interval timer, control and status registers, the conversion command word (CCW) table
RAM, and the result word table RAM.
EXTERNAL
TRIGGERS
CONTROL
DIGITAL
MUX ADDRESS
EXTERNAL
QUEUED ANALOG-TO-DIGITAL CONVERTER MODULE
INTERMODULE BUS
Figure 8-1 QADC Block Diagram
INTERFACE
COMMAND WORDS (CCW), 40 WORDS
QUEUE OF 10-BIT CONVERSION
ANALOG INPUT MULTIPLEXER AND
DIGITAL PIN FUNCTIONS
UP TO 16 ANALOG
INPUT PINS
10-BIT ANALOG TO DIGITAL CONVERTER
REFERENCE
10-BIT RESULT TABLE,
RESULT ALIGNMENT
INPUTS
10-BIT TO 16-BIT
40 WORDS
ANALOG POWER
INPUTS
MOTOROLA
QADC BLOCK
8-1