MC68376BAMFT20 Freescale Semiconductor, MC68376BAMFT20 Datasheet - Page 183

• Manufacturer Part Number: MC68376BAMFT20
• Manufacturer: Freescale Semiconductor

Specifications of MC68376BAMFT20

• Cpu Family: 68K/M683xx
• Device Core: ColdFire
• Device Core Size: 32b
• Frequency (max): 20MHz
• Interface Type: QSPI/SCI
• Program Memory Type: ROM
• Program Memory Size: 8KB
• Total Internal Ram Size: 7.5KB
• # I/os (max): 18
• Number Of Timers - General Purpose: 2
• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (max): 5.25V
• Operating Supply Voltage (min): 4.75V
• On-chip Adc: 16-chx10-bit
• Instruction Set Architecture: RISC
• Operating Temp Range: -40C to 125C
• Operating Temperature Classification: Automotive
• Mounting: Surface Mount
• Pin Count: 160
• Package Type: PQFP
• Lead Free Status / Rohs Status: Not Compliant

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