MAXQ3100-EMN+ MAXIM [Maxim Integrated Products], MAXQ3100-EMN+ Datasheet

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MAXQ3100-EMN+

Manufacturer Part Number
MAXQ3100-EMN+
Description
Mixed-Signal Microcontroller with Analog Comparators, LCD, and RTC
Manufacturer
MAXIM [Maxim Integrated Products]
Datasheet
The MAXQ3100 microcontroller is a low-power, 16-bit
RISC device that incorporates an integrated liquid-crystal
display (LCD) interface that can drive up to 160 seg-
ments, two analog comparators with precision internal
1.25V reference voltage, and a real-time clock (RTC)
module with a dedicated battery-backup supply. An inter-
nal temperature sensor allows software to monitor device
temperature and optionally interrupt to alert when a tem-
perature conversion is complete. The MAXQ3100 is
uniquely suited for single-phase electricity metering appli-
cations that require an external analog front-end, but can
be used in any application that requires high-perfor-
mance operation. The device operates at a fixed
4.194MHz, generated from the 32.76kHz RTC crystal. The
device has 8kWords of EEPROM, 512 words of RAM,
three 16-bit timers, and two universal synchronous/asyn-
chronous receiver/transmitters (USARTs). The microcon-
troller core and I/O are powered by a single 3.3V supply,
and an additional battery supply keeps the RTC running
during power outages.
Rev 0; 6/07
+ Denotes a Pb-free/RoHS-compliant device.
Typical Application Circuits and Pin Configuration appear
at end of data sheet.
MAXQ is a registered trademark of Maxim Integrated Products, Inc.
Note: Some revisions of this device may incorporate deviations
from published specifications known as errata. Multiple revi-
sions of any device may be simultaneously available through
various sales channels. For information about device errata, go
to: www.maxim-ic.com/errata .
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
MAXQ3100-EMN+
Utility Meters
Battery-Powered and
Portable Devices
Electrochemical and
Optical Sensors
Industrial Control
Data-Acquisition
Systems and Data
Loggers
PART
Mixed-Signal Microcontroller with Analog
________________________________________________________________ Maxim Integrated Products
Ordering Information
-40°C to +85°C
TEMP RANGE
General Description
Home Appliances
Consumer Electronics
Thermostats/Humidity
Sensors
Security Sensors
Gas and Chemical
Sensors
HVAC
Smart Transmitters
Applications
80 MQFP
PIN-PACKAGE
Comparators, LCD, and RTC
♦ High-Performance, Low-Power, 16-Bit RISC Core
♦ Program and Data Memory
♦ Peripheral Features
♦ Flexible Programming Interface
♦ Power Consumption
4.194MHz Operation, Approaching 1MIPS
3.3V Core and I/O
33 Instructions, Most Single-Cycle
Three Independent Data Pointers Accelerate
16-Level Hardware Stack
16-Bit Instruction Word, 16-Bit Data Bus
16 x 16-Bit, General-Purpose Working Registers
Optimized for C-Compiler (High-Speed/Density
8kWords EEPROM
200,000 EEPROM Write/Erase Cycles
512 Words of Internal Data RAM
JTAG-Compatible Debug Port Bootloader for
Up to 27 General-Purpose I/O Pins, Most 5V
160-Segment LCD Driver
Two Analog Comparators with Internal +1.25V
Two Serial USARTs, One with Infrared PWM
Digital Temperature Sensor
Three 16-Bit Programmable Timers/Counters
8-Bit, Subsecond, System Timer/Alarm
Battery-Backed, 32-Bit RTC with
Programmable Watchdog Timer
Bootloader Simplifies Programming
In-System Programming Through Debug Port
Supports In-Application Programming of EEPROM
1.9mA at 4.194MHz, 3.6V Operation
1.9µA Standby Current in Sleep Mode
Low-Power Divide-by-256 Mode
per MHz
Data Movement with Automatic Increment/
Decrement
Code)
Programming
Tolerant
Up to 4 COM and 40 Segments
Static, 1/2, and 1/3 LCD Bias Supported
No External Resistors Required
Precision Reference
Support
Time-of-Day Alarm and Digital Trim
Features
1

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MAXQ3100-EMN+ Summary of contents

Page 1

... HVAC Loggers Smart Transmitters Ordering Information PART TEMP RANGE MAXQ3100-EMN+ -40°C to +85°C + Denotes a Pb-free/RoHS-compliant device. Typical Application Circuits and Pin Configuration appear at end of data sheet. MAXQ is a registered trademark of Maxim Integrated Products, Inc. Note: Some revisions of this device may incorporate deviations from published specifications known as errata ...

Page 2

Mixed-Signal Microcontroller with Analog Comparators, LCD, and RTC ABSOLUTE MAXIMUM RATINGS Voltage Range on DV Relative to DGND ..........-0.5V to +6.0V DD Voltage Range on Any Pin Relative to DGND (3V Tolerant) .........................................-0.5V to (DV Continuous Output Current (Any Single ...

Page 3

Mixed-Signal Microcontroller with Analog ELECTRICAL CHARACTERISTICS (continued) ( 3.6V 32.768kHz, T 32KIN DD RST PARAMETER SYMBOL DIGITAL I/O Input High Voltage (Port RESET) Input High Voltage (Port 2) Input Low Voltage Output ...

Page 4

Mixed-Signal Microcontroller with Analog Comparators, LCD, and RTC ELECTRICAL CHARACTERISTICS (continued) ( 3.6V 32.768kHz, T 32KIN DD RST PARAMETER SYMBOL LCD Segment Voltage V CLOCK SOURCES External Crystal Frequency f Internal Clock Frequency System Clock ...

Page 5

Mixed-Signal Microcontroller with Analog PIN NAME 1, 11, 52, DGND Digital Ground 58 53, 59, DV Digital Supply Voltage (+3.3V General-Purpose, Digital, I/O, Type D Port; External Edge-Selectable Interrupt. These port pins function as bidirectional I/O ...

Page 6

Mixed-Signal Microcontroller with Analog Comparators, LCD, and RTC PIN NAME LCD Bias, Voltage 2. Third highest LCD drive voltage, used in 1/3 LCD bias mode only. An internal resistor-divider sets the voltage at this pin. External resistors and capacitors can ...

Page 7

... Additional Documentation section. MAXQ Core Architecture The MAXQ3100 is a high-performance, CMOS, 16-bit RISC microcontroller with EEPROM and an integrated 160-segment LCD controller structured on a highly advanced, accumulator-based, 16-bit RISC architec- ture ...

Page 8

... When executing code from the utility ROM, the EEPROM memory and SRAM are accessible in data space. Refer to the MAXQ Family User’s Guide: MAXQ3100 Supplement for more details. In all cases, whichever memory segment is currently being executed from cannot be accessed in data space. ...

Page 9

Mixed-Signal Microcontroller with Analog PROGRAM SPACE 512 x 16 DATA SRAM UTILITY ROM PROGRAM EEPROM Figure 1. Memory Map When Executing from EEPROM _______________________________________________________________________________________ Comparators, LCD, and RTC DATA SPACE (BYTE MODE) A1FFh A000h ...

Page 10

... The peripheral registers define additional functionality that may be included by different products based on the MAXQ architecture. This functionality is broken up into discrete modules so that only the features required for a given product need to be included. Tables 1 and 4 show the MAXQ3100 register set. In-Application Programming Register Set ...

Page 11

Mixed-Signal Microcontroller with Analog Table 1. System Register Map REGISTER AP INDEX (8h APC 2h — 3h — 4h PSF IMR 7h — — Ah — Bh IIR Ch — Dh ...

Page 12

Mixed-Signal Microcontroller with Analog Comparators, LCD, and RTC Table 2. System Register Bit Functions REGISTER APC PSF IC IMR SC IIR CKCN WDCN A[0..15] PFX IP SP — — — — IV LC[0] LC[1] Offs ...

Page 13

Mixed-Signal Microcontroller with Analog Table 3. System Register Reset Values REGISTER APC PSF IC IMR SC IIR CKCN WDCN A[0..15 PFX ...

Page 14

Mixed-Signal Microcontroller with Analog Comparators, LCD, and RTC Table 4. Peripheral Register Map REGISTER INDEX (0h) 0h PO0 1h SCON0 2h SBUF0 3h T0CN 4h 5h T1CN 6h T1MD 7h EIF0 8h 9h SMD0 Ah PR0 Bh T0H Ch Dh ...

Page 15

Mixed-Signal Microcontroller with Analog Comparators, LCD, and RTC ______________________________________________________________________________________ 15 ...

Page 16

Mixed-Signal Microcontroller with Analog Comparators, LCD, and RTC 16 ______________________________________________________________________________________ ...

Page 17

Mixed-Signal Microcontroller with Analog Comparators, LCD, and RTC ______________________________________________________________________________________ 17 ...

Page 18

Mixed-Signal Microcontroller with Analog Comparators, LCD, and RTC Table 6. Peripheral Register Bit Reset Values REGISTER PO0 SCON0 SBUF0 T0CN T0L T1CN T1MD EIF0 PI0 SMD0 PR0 T0H T1L T1H T1CL T1CH PD0 EIE0 ...

Page 19

Mixed-Signal Microcontroller with Analog Table 6. Peripheral Register Bit Reset Values (continued) REGISTER LCRA LCD0 LCD1 LCD2 LCD3 LCD4 PI2 LCD5 LCD6 LCD7 LCD8 LCD9 LCD10 LCD11 PD2 LCD12 LCD13 LCD14 LCD15 LCD16 LCD17 ...

Page 20

... Mixed-Signal Microcontroller with Analog Comparators, LCD, and RTC System Timing The MAXQ3100 generates its internal system clock from the external 32.768kHz crystal. This serves as the time- base for the RTC and is multiplied internally by a fre- quency-locked loop (FLL) to provide a system clock of 4 ...

Page 21

Mixed-Signal Microcontroller with Analog Power consumption reaches its minimum in stop mode. In this mode, the system clock and all code execution is halted. Upon receiving one of the following enabled events, the device executes a 250ms warmup delay and ...

Page 22

... CMOS output drivers, and can support alternate functions. The pin is either tri-stated or a weak pullup when defined as an input, dependent on the state of the corresponding bit in the output register. All Type D pins also have interrupt capability. MAXQ3100 I/O PAD DETECT CIRCUIT EIES.x ...

Page 23

... V < 0. BAT Programmable Timers The MAXQ3100 incorporates one instance each of the timer 0, timer 1, and timer 2 peripherals. These timers can be used in counter/timer/capture/compare/PWM functions, allowing precise control of internal and exter- nal events. Timer 2 supports optional single-shot, exter- nal gating, and polarity control options as well as carrier generation support for infrared transmit/receive functions using serial port 0 ...

Page 24

... Debug mode allows the debug engine to take control of the CPU, providing read/write access to internal reg- isters and memory, and single-step trace operation. Serial Peripherals The MAXQ3100 incorporates two 8051-style universal synchronous/asynchronous receiver/transmitters. The USARTs allow the device to conveniently communicate with other RS-232 interface-enabled devices, as well as PCs and serial modems when paired with an external RS-232 line driver/receiver ...

Page 25

... The low-power, high-performance RISC architecture of the MAXQ3100 makes it an excellent fit for many appli- cations that require analog measurements combined with the intelligence of a full-featured microcontroller. Simple voltage-dividers can be used to scale any input into a value in the range of the +1 ...

Page 26

... The user’s guides offer detailed information about programming, device features, and operation. The following documents can be down- loaded from www.maxim-ic.com/microcontrollers. • The MAXQ3100 data sheet, which contains electri- cal/timing specifications and pin descriptions, avail- able at www.maxim-ic.com/MAXQ3100. • The MAXQ3100 errata sheet, available at www.maxim-ic.com/errata. • ...

Page 27

... Mixed-Signal Microcontroller with Analog Typical Application Circuit #1 Typical Application Circuit #1 shows a general-purpose implementation using a MAXQ3100 that reads two sen- sor inputs, displays result and status information on an 3.3V DIRECT INPUT FROM USER- DEFINED SENSOR SCALED COMPARATOR INPUT BACKUP BATTERY FRAM ...

Page 28

... Mixed-Signal Microcontroller with Analog Comparators, LCD, and RTC Typical Application Circuit #2 Another target application of the MAXQ3100 is in the electricity metering market. When coupled with an ana- log front-end, the microcontroller becomes the core of UNREGULATED SUPPLY REGULATOR 3.3V BACKUP BATTERY ENERGY METERING IC CALIBRATION EQUIPMENT ...

Page 29

... DGND 11 12 SEG0 SEG1 13 SEG2 14 SEG3 15 SEG4 16 SEG5 17 SEG6 18 SEG7 19 SEG8 20 SEG9 21 SEG10 22 SEG11 23 SEG12 24 ______________________________________________________________________________________ Comparators, LCD, and RTC MAXQ3100 MQFP Pin Configuration 64 P3.0/TDI 63 P1.3/INT11/RXD1 62 P1.2/INT10/TXD1 61 P1.1/INTP/T2A 60 P1.0/INT8/T2B DGND 57 V ADJ 56 V LCD2 55 V LCD1 54 V LCD 53 DV ...

Page 30

Mixed-Signal Microcontroller with Analog Comparators, LCD, and RTC (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/DallasPackInfo). Rev 0; 6/07: Original release. Maxim cannot assume responsibility ...

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