Rainbow Electronics MAXQ7667 - Manual (Page 15)

MAXQ7667
16-Bit, RISC, Microcontroller-Based,
Ultrasonic Distance-Measuring System
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Detailed Features
♦ Smart Analog Peripherals
Dedicated Ultrasonic Burst Generator
Echo Receiving Path
Low-Noise Amplifier
Time Variable Gain Amplifier
16-Bit Sigma-Delta ADC
Digital Bandpass Filter
Full-Wave Rectifier and Digital Lowpass Filter
8-Deep, 16-Bit Wide FIFO Simplifies Real-Time
Processing
Magnitude Comparator
5-Channel, 12-Bit SAR ADC with 250ksps
Sampling Rate
Internal Bandgap Voltage Reference for the ADCs
(Also Accepts External Voltage Reference)
♦ Timer/Digital I/O Peripherals
SPI Interface
Three 16-Bit (or Six 8-Bit) Programmable Type 2
Timers/Counters
16-Bit Schedule Timer
Programmable Watchdog Timer
16 General-Purpose Digital I/Os with
Multipurpose Capability
♦ High-Performance, Low-Power, 16-Bit RISC Core
1MHz–16MHz Operation, Approaching 1MIPS per
1MHz
Low Power (< 2.5mA/MIPS, DVDD = +2.5V)
16-Bit Instruction Word, 16-Bit Data Bus
33 Instructions (Most Require Only One Clock
Cycle)
16-Level Hardware Stack
Three Independent Data Pointers with Automatic
Increment/Decrement
♦ Program and Data Memory
Internal 32KB Program Flash
Internal 4KB Data RAM
Internal 8KB Utility ROM
♦ Crystal/Clock Module
1MHz–16MHz External Crystal Oscillator
13.5MHz Internal RC Oscillator
External Clock Source Operation
♦ 16 x 16 Hardware Multiplier with 48-Bit
Accumulator, Single Clock Cycle Operation
♦ Power-Management Module
Power-On Reset (POR)
Power-Supply Supervisor/Brownout Detection for
All Supplies
On-Chip +5V, +3.3V, and +2.5V Regulators for
Single Supply Operation
♦ JTAG Interface
Extensive Debug and Emulation Support
In-System Test Capability
Flash-Memory-Program Download
♦ UART
Synchronous and Asynchronous Transfers
Independent Baud-Rate Generator
2-Wire Interface
Transmit and Receive FIFOs
♦ LIN
Supports LIN 1.3, LIN 2.0, and SAE J2602
Automatic Baud-Rate Detection and LIN Frame
Synchronization
Up to 64 Bytes Frame Length
Automatic Calculation of Standard (LIN 1.3) and
Enhanced (LIN 2.0) Checksums
♦ 7mm x 7mm, 48-Pin LQFP Package
♦ -40°C to +125°C Operating Temperature Range