maxq7667 Maxim Integrated Products, Inc., maxq7667 Datasheet - Page 15

• Manufacturer Part Number: maxq7667
• Description: 16-bit, Risc, Microcontroller-based, Ultrasonic Distance-measuring System
• Manufacturer: Maxim Integrated Products, Inc.

o Smart Analog Peripherals
o Timer/Digital I/O Peripherals
o High-Performance, Low-Power, 16-Bit RISC Core
Dedicated Ultrasonic Burst Generator
Echo Receiving Path
5-Channel, 12-Bit SAR ADC with 250ksps
Sampling Rate
Internal Bandgap Voltage Reference for the ADCs
(Also Accepts External Voltage Reference)
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
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
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
______________________________________________________________________________________
Ultrasonic Distance-Measuring System
Detailed Features
16-Bit, RISC, Microcontroller-Based,
o Program and Data Memory
o Crystal/Clock Module
o 16 x 16 Hardware Multiplier with 48-Bit
o Power-Management Module
o JTAG Interface
o UART
o LIN
o 7mm x 7mm, 48-Pin LQFP Package
o -40°C to +125°C Operating Temperature Range
Internal 32KB Program Flash
Internal 4KB Data RAM
Internal 8KB Utility ROM
1MHz–16MHz External Crystal Oscillator
13.5MHz Internal RC Oscillator
External Clock Source Operation
Accumulator, Single Clock Cycle Operation
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
Extensive Debug and Emulation Support
In-System Test Capability
Flash-Memory-Program Download
Synchronous and Asynchronous Transfers
Independent Baud-Rate Generator
2-Wire Interface
Transmit and Receive FIFOs
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
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