Maxim Integrated MAXQ7667 User Manual
Maxq7667 user’s guide, Maxq7667
______________________________________________________________________________________ Maxim Integrated Products
i
MAXQ7667 USER’S GUIDE
Rev 0; 4/09
BURST ENABLE
AVDD/2
120k
Ω
LNA
AVDD/2
0mV
2mV
-1
MUX
BURST OUTPUT,
DUTY CYCLE, AND
PULSE COUNTER
SIGMA-DELTA
ADC
SIGMA-DELTA
ADC
DIGITAL
BANDPASS
FILTER
RAM
2K x 16
ROM
2K x 16
16 x 16
HW MULT
+ ACCUM
FLASH
8K x 16
OR
16K x 16
INTERNAL
REGULATORS
16-BIT 16-MIPS
MICROCONTROLLER
PROGRAMMABLE
PLL-BASED OSCILLATOR
VOLTAGE
REFERENCE
FULL WAVE
DETECTOR
THRESHOLD
ADJUST
SYSTEM
TIMER
TIMER 2
CRYSTAL
OSCILLATOR
16MHz (MAX)
INTERNAL
OSCILLATOR
WATCHDOG
POR/
BROWNOUT
UART
(LIN)
TIMER 1
TIMER 0
T0B_CMPO
T0
DIGITAL
LOWPASS
FILTER
120k
Ω
3k
Ω
3k
Ω
0.47
µF
REFBG
0.47
µF
0.47
µF
REFSAR
REFECHO
AIN0
BURST
ECHON
470pF
0.01
µF
ECHOP
GATE5
AVDD
DVDD
GND
Rx
Tx
DVDDIO
REG3P3
REG2P5
+5.0V DVDDIO
BSP129
AVDD
330pF
THERMISTOR
BATTERY+
AIN1
AIN2
AIN3
AIN4
AIN5
FILT
T1
T2
16MHz
20pF
20pF
T2B
RESET
CLOCK PRESCALERS
DIVIDE BY 1 TO 128
FIFO
33nF
24k
Ω
470pF
0.01
µF
0.1
µF
0.1
µF
0.1
µF
TRANSCEIVER
CONNECTOR
V+
GROUND
SIGNAL
+9V TO
+20V
MAXQ7667
Table of contents
Document Outline
- TABLE OF CONTENTS
- SECTION 1: OVERVIEW
- SECTION 2: ARCHITECTURE
- SECTION 3: PROGRAMMING
- SECTION 4: REGISTER DESCRIPTIONS
- 4.1 System Register Descript...
- 4.1.1 Accumulator Pointer Re...
- 4.1.2 Accumulator Pointer Co...
- 4.1.3 Processor Status Flags...
- 4.1.4 Interrupt and Control ...
- 4.1.5 Interrupt Mask Registe...
- 4.1.6 System Control Registe...
- 4.1.7 Interrupt Identificati...
- 4.1.8 System Clock Control R...
- 4.1.9 Watchdog Timer Control...
- 4.1.10 Accumulator n Registe...
- 4.1.11 Prefix Register (PFX[n])
- 4.1.12 Instruction Pointer R...
- 4.1.13 Stack Pointer Registe...
- 4.1.14 Interrupt Vector Regi...
- 4.1.15 Loop Counter 0 Regist...
- 4.1.16 Loop Counter 1 Regist...
- 4.1.17 Frame Pointer Offset ...
- 4.1.18 Data Pointer Control ...
- 4.1.19 General Register (GR)
- 4.1.20 General Register Low ...
- 4.1.21 Frame Pointer Base Re...
- 4.1.22 General Register Byte...
- 4.1.23 General Register High...
- 4.1.24 General Register Sign...
- 4.1.25 Frame Pointer Registe...
- 4.1.26 Data Pointer 0 Regist...
- 4.1.27 Data Pointer 1 Regist...
- 4.2 Peripheral Register Modules
- 4.1 System Register Descript...
- SECTION 5: GENERAL-PURPOSE I/O MODULE
- 5.1 Architecture
- 5.2 Port Registers
- 5.2.1 Port 0 Output Register...
- 5.2.2 Port 1 Output Register...
- 5.2.3 External Interrupt Fla...
- 5.2.4 External Interrupt Fla...
- 5.2.5 Port 0 Input Register ...
- 5.2.6 Port 1 Input Register ...
- 5.2.7 External Interrupt Ena...
- 5.2.8 External Interrupt Ena...
- 5.2.9 Port 0 Direction Regis...
- 5.2.10 Port 1 Direction Regi...
- 5.2.11 External Interrupt Ed...
- 5.2.12 External Interrupt Ed...
- 5.2.13 Pad Drive Strength Re...
- 5.2.14 Pad Drive Strength Re...
- 5.2.15 Pad Resistive Pull Di...
- 5.2.16 Pad Resistive Pull Di...
- 5.3 GPIO Operation
- SECTION 6: TYPE 2 TIMER/COUNTER MODULE
- 6.1 Architecture
- 6.2 Type 2 Timer/Counter Per...
- 6.3 Type 2 Status/Control Re...
- 6.4 Type 2 Counter Registers
- 6.5 Type 2 Reload Register
- 6.6 Type 2 Capture/Compare R...
- 6.7 Type 2 Timer/Counter Ope...
- SECTION 7: SCHEDULE TIMER
- SECTION 8: UART AND LIN
- 8.1 Architecture
- 8.2 UART/LIN Pins
- 8.3 UART and LIN Register De...
- 8.3.1 Control Register 1 (UA...
- 8.3.2 Serial Control Registe...
- 8.3.3 Serial Port Buffer Reg...
- 8.3.4 FIFO Status Register (...
- 8.3.5 Error Register (UART) ...
- 8.3.6 Checksum Register (UAR...
- 8.3.7 Interrupt State Vector...
- 8.3.8 Status Register 0 (UAR...
- 8.3.9 Serial Mode Register (...
- 8.3.10 FIFO Control Register...
- 8.3.11 Control Register 0 (U...
- 8.3.12 Control Register 2 (U...
- 8.3.13 Identifier Boundary R...
- 8.3.14 Serial Address Regist...
- 8.3.15 Serial Address Mask R...
- 8.3.16 Bit Timing Register (...
- 8.3.17 Timer Register (UART)...
- 8.4 MAXQ7667 LIN
- 8.5 MAXQ7667 UART
- SECTION 9: ENHANCED SERIAL PERIPHERAL INTERFACE (SPI) MODULE
- SECTION 10: HARDWARE MULTIPLIER MODE
- SECTION 11: TEST ACCESS PORT (TAP)
- SECTION 12: IN-CIRCUIT DEBUG MODE
- 12.1 Architecture
- 12.2 In-Circuit Debug Periph...
- 12.3 Debug Engine Operation
- SECTION 13: IN-SYSTEM PROGRAMMING/BOOTLOADER
- SECTION 14: SAR ADC MODULE
- SECTION 15: OSCILLATOR/CLOCK GENERATION
- SECTION 16: POWER-SUPPLY/SUPERVISORY MONITORING
- SECTION 17: ULTRASONIC DISTANCE MEASUREMENT MODULE--BURST TRANSMISSION AND ECHO RECEPTION
- 17.1 Architecture
- 17.2 Burst Transmission and ...
- 17.3 Echo Burst Transmission...
- 17.3.1 Burst Pulse-Width Hig...
- 17.3.2 Burst Transmit Contro...
- 17.3.3 Echo Path Control Reg...
- 17.3.4 PLL-Based Programmabl...
- 17.3.5 Analog Interrupt Enab...
- 17.3.6 Echo Envelope Compara...
- 17.3.7 Echo Envelope Compara...
- 17.3.8 Analog Status Registe...
- 17.3.9 Echo Envelope Lowpass...
- 17.3.10 Echo Envelope Bandpa...
- 17.3.11 Echo Envelope Bandpa...
- 17.3.12 Echo Envelope Lowpas...
- 17.3.13 Echo Envelope Lowpas...
- 17.3.14 Analog Power Enable ...
- 17.4 Burst Signal Generation
- 17.5 Echo Reception
- SECTION 18: UTILITY ROM
- SECTION 19: INSTRUCTION SET SUMMARY
- ADD/ADDC src
- AND src
- AND Acc.
- {L/S}CALL
- CMP src
- CPL
- CPL C
- {L/S}DJNZ LC[n], src
- {L/S}JUMP src
- {L/S}JUMP C/{L/S}JUMP NC, sr...
- MOVE dst, src
- MOVE Acc., C
- MOVE C, Acc.
- MOVE C, src.
- MOVE C, #0
- MOVE C, #1
- MOVE dst., #0
- MOVE dst., #1
- NEG
- OR src
- OR Acc.
- POP dst
- POPI dst
- PUSH src
- RET
- RET C/RET NC, RET Z/RET NZ, ...
- RETI
- RETI C/RETI NC, RETI Z/RETI ...
- RL/RLC
- RR/RRC
- SLA/SLA2/SLA4
- SR/SRA/SRA2/SRA4
- SUB/SUBB src
- XCH
- XCHN
- XOR src
- XOR Acc.
- REVISION HISTORY