MAX6745XKVD3+T Maxim Integrated, MAX6745XKVD3+T Datasheet

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MAX6745XKVD3+T

Manufacturer Part Number
MAX6745XKVD3+T
Description
Supervisory Circuits MCU Supervisor
Manufacturer
Maxim Integrated
Series
MAX6736, MAX6737, MAX6738, MAX6739, MAX6740, MAX6741, MAX6742, MAX6743, MAX6744, MAX6745r
Datasheet

Specifications of MAX6745XKVD3+T

Rohs
yes
Number Of Voltages Monitored
2
Monitored Voltage
1.8 V to 5 V, 0.9 V to 3.3 V
Undervoltage Threshold
1.53 V, 0.765 V
Overvoltage Threshold
1.62 V, 0.81 V
Output Type
Active Low, Push-Pull
Manual Reset
Not Resettable
Watchdog
No Watchdog
Battery Backup Switching
No Backup
Power-up Reset Delay (typ)
225 ms
Supply Voltage - Max
5.5 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Package / Case
SC-70
Chip Enable Signals
No
Maximum Power Dissipation
247 mW
Minimum Operating Temperature
- 40 C
Power Fail Detection
Yes
Supply Current (typ)
5 uA, 10 uA
Supply Voltage - Min
1 V
For pricing, delivery, and ordering information, please contact Maxim Direct at
1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com.
The MAXQ613 is a low-power, 16-bit MAXQ
troller designed for low-power applications including uni-
versal remote controls, consumer electronics, and white
goods. The device combines a powerful 16-bit RISC
microcontroller and integrated peripherals including a
universal synchronous/asynchronous receiver-transmit-
ter (USART) and an SPI master/slave communications
port, along with an IR module with carrier frequency
generation and flexible port I/O capable of multiplexed
keypad control.
The device includes 48KB of flash program memory and
1.5KB of data SRAM. Intellectual property (IP) protec-
tion is provided by a secure MMU that supports multiple
application privilege levels and protects code against
copying and reverse engineering. Privilege levels enable
vendors to provide libraries and applications to execute
on the device, while limiting access to only data and
code allowed by their privilege level.
For the ultimate in low-power battery-operated perfor-
mance, the device includes an ultra-low-power stop
mode (0.2µA typ). In this mode, the minimum amount of
circuitry is powered. Wake-up sources include external
interrupts, the power-fail interrupt, and a timer interrupt.
The microcontroller runs from a wide 1.70V to 3.6V oper-
ating voltage.
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.
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 revisions of any device
may be simultaneously available through various sales channels. For information about device errata, go to: www.maximintegrated.com/errata.
MAXQ613A-0000+
MAXQ613J-0000+
MAXQ613X-0000+
Remote Controls
Battery-Powered
Portable Equipment
PART
16-Bit Microcontroller with Infrared Module
TEMP RANGE
0NC to +70NC
0NC to +70NC
0NC to +70NC
General Description
Consumer Electronics
Home Appliances
White Goods
Applications
VOLTAGE (V)
OPERATING
1.7 to 3.6
1.7 to 3.6
1.7 to 3.6
®
microcon-
MEMORY (KB)
PROGRAM
48 Flash
48 Flash
48 Flash
Ordering Information/Selector Guide
S
S
S
S
S
S
S
S
S
S
S
S
High-Performance, Low-Power, 16-Bit RISC Core
DC to 12MHz Operation Across Entire Operating Range
1.70V to 3.6V Operating Voltage
33 Total Instructions for Simplified Programming
Three Independent Data Pointers Accelerate Data
Movement with Automatic Increment/Decrement
Dedicated Pointer for Direct Read from Code Space
16-Bit Instruction Word, 16-Bit Data Bus
16 x 16-Bit General-Purpose Working Registers
Secure MMU for Application Partitioning and IP
Protection
Memory Features
Additional Peripherals
Low Power Consumption
48KB Program Flash Memory
Masked ROM Available
1.5KB Data SRAM
Power-Fail Warning
Power-On Reset (POR)/Brownout Reset
Automatic IR Carrier Frequency Generation and
Two 16-Bit Programmable Timers/Counters with
One SPI and One USART Port
Programmable Watchdog Timer
8kHz Nanopower Ring Oscillator Wake-Up Timer
Up to 24 General-Purpose I/Os
0.2µA (typ), 2.0µA (max) in Stop Mode,
3.25mA (typ) at 12MHz in Active Mode
Modulation
Prescaler and Capture/Compare
T
512-Byte Sectors
20,000 Erase/Write Cycles per Sector
A
MEMORY (KB)
= +25NC, Power-Fail Monitor Disabled
DATA
1.5
1.5
1.5
GPIO
20
24
24
MAXQ613
PIN-PACKAGE
32 TQFN-EP*
44 TQFN-EP*
Bare die
19-5320; Rev 4; 7/12
Features

Related parts for MAX6745XKVD3+T

MAX6745XKVD3+T Summary of contents

Page 1

... Exposed pad. 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 revisions of any device may be simultaneously available through various sales channels. For information about device errata, go to: www.maximintegrated.com/errata. ...

Page 2

... In-Application Flash Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 In-Circuit Debug and JTAG Interface Operating Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Power-Fail Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Applications Information Grounds and Bypassing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Additional Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Deviations from the MAXQ610 User’s Guide for the MAXQ613 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Development and Technical Support Package Information Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 2 TABLE OF CONTENTS Maxim Integrated ...

Page 3

... Table 2. Watchdog Interrupt Timeout (Sysclk = 12MHz, CD[1: Table 3. USART Mode Details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Table 4. Power-Fail Detection States During Normal Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Table 5. Stop Mode Power-Fail Detection States with Power-Fail Monitor Enabled . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Table 6. Stop Mode Power-Fail Detection States with Power-Fail Monitor Disabled . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Maxim Integrated LIST OF FIGURES LIST OF TABLES MAXQ613 3 ...

Page 4

... PFM_ON t (Note 8) PFW MIN TYP MAX V 3.6 RST 1.62 1.8 1.98 1.75 1.8 1.85 1.64 1.67 1.70 1 1.42 1.0 3.25 4 0.2 2.0 0 29.5 27 ((PCI - ))]/PCI NANO 100 375 + (8192 x t HFXIN) 150 GND DD 0 Maxim Integrated UNITS ...

Page 5

... EXTERNAL CLOCK INPUT External Clock Frequency External Clock Period External Clock Duty Cycle t XCLK_DUTY System Clock Frequency System Clock Period NANOPOWER RING Nanopower Ring Frequency Nanopower Ring Duty Cycle Nanopower Ring Current Maxim Integrated CONDITIONS 3.3V +25NC IHYS DD A IL_HFXIN IH_HFXIN t ...

Page 6

... CK MIN TYP MAX 8.3 23 MCK t SPI_RF MCK t SPI_RF MCK t SPI_RF MCK t SPI_RF t /2 SCK t SPI_RF t SPI_RF Maxim Integrated UNITS s MHz ms Fs Cycles Years Hz UNITS MHz MHz ...

Page 7

... Note 9: The maximum total current, I maximum specified voltage drop. This does not include the IRTX output. Note 10: Programming time does not include overhead associated with utility ROM interface. Note 11: AC electrical specifications are guaranteed by design and are not production tested. Maxim Integrated CONDITIONS t SIH ...

Page 8

... No devices other than the capacitor should be connected to this pin. Pin Configurations 34 35 N. MAXQ613 TQFN (7mm × 7mm) Pin Description FUNCTION 22 P1.5/INT5 21 P1.4/INT4 20 GND REGOUT 17 GND 16 N.C. 15 N.C. 14 P1.3/INT3 13 P1.2/INT2 EP 12 P1.1/INT1 Maxim Integrated ...

Page 9

... Maxim Integrated NAME RESET PIN Digital, Active-Low, Reset Input/Output. The device remains in reset as long as this pin is low and begins executing from the utility ROM at address 8000h when this pin returns to a high state. The pin includes pullup current source; if this pin is driven by an external device, it should RESET be driven by an open-drain source capable of sinking in excess of 4mA ...

Page 10

... EXTERNAL INTERRUPT P1.0 P1.1 P1.2 P1.3 P1.4 P1.5 P1.6 P1.7 SPECIAL FUNCTION P2.0 SPI: Master Out-Slave In P2.1 SPI: Master In-Slave Out P2.2 SPI: Slave Clock P2.3 SPI: Active-Low Slave Select P2.4 JTAG: Test Clock P2.5 JTAG: Test Data In P2.6 JTAG: Test Mode Select P2.7 JTAG: Test Data Out INT0 INT1 INT2 INT3 INT4 INT5 INT6 INT7 Maxim Integrated ...

Page 11

... Operating from DC to 12MHz, almost all instructions exe- cute in a single clock cycle (83.3ns at 12MHz), enabling nearly 12MIPS true-code operation. When active device operation is not required, an ultra-low-power stop mode Maxim Integrated Block Diagram can be invoked from software, resulting in quiescent current consumption of less than 0.2FA (typ) and 2.0FA (max) ...

Page 12

... MAXQ610 User’s Guide) MAXIMUM PRIVILEGE LEVEL Medium Utility ROM High Low High Low Maxim Integrated ...

Page 13

... All watchdog timer resets follow the pro- grammed interrupt timeouts by 512 system clock cycles. If the watchdog timer is not restarted for another full interval in this time period, a system reset occurs when the reset timeout expires. See Table 2. Maxim Integrated WATCHDOG INTERRUPT TIMEOUT 2.7ms 21.9ms 174.7ms 1 ...

Page 14

... IRCLK resolution. The IRTXPOL bit defines the starting/idle state as well as the carrier polarity for the IRTX pin. If IRTXPOL = 1, the IRCA = 0002h IRMT = 5 IRCA, IRMT, IRDATA SAMPLED AT END OF IRV DOWN-COUNT INTERVAL Transmission Maxim Integrated ...

Page 15

... IRTX IRTXPOL = 1 IRTX IRTXPOL = 0 Figure 3. IR Transmission Waveform (IRCFME = 0) Maxim Integrated condition, as defined by IRTXPOL, is output on the IRTX pin during the next IRMT cycles. The IR timer acts as a down counter in transmit mode transmission starts when the IREN bit is set to 1 when IRMODE = 1 ...

Page 16

... Resets IRV content to 0000h (if IRXRL = 1). 4) Continues counting again until the next qualified event. If the IR timer value rolls over from 0FFFFh to 0000h before a qualified event happens, the IR timer overflow (IROV) flag is set to 1 and an interrupt is generated Receive IRMT IRMT Maxim Integrated ...

Page 17

... IRV register is counting system IRCLK clocks or IRCA-defined carrier cycles. The IRXRL bit defines whether the IRV register is reloaded with 0000h on detection of a qualified edge (per the IRXSEL[1:0] bits). Figure 6 and the descriptive sequence embedded Maxim Integrated CARRIER MODULATION 0 IRCAL + 1 1 ...

Page 18

... Sysclk/4 SPI transfer rate. Data is transferred as an 8-bit or 16-bit value, MSB first. In addition, the SPI module supports configuration of an active SSEL state (active low or active high) through the slave active select. IRMT = PULSE COUNTING 8 9 DATA BITS STOP BITS 8 N Maxim Integrated ...

Page 19

... CKPOL/CKPHA 0/1 OR 1/0 SCLK CKPOL/CKPHA 0/0 OR 1/1 MOSI MISO Figure 7. SPI Master Communication Timing SHIFT SSEL t SSE SCLK CKPOL/CKPHA 0/1 OR 1/0 SCLK CKPOL/CKPHA 0/0 OR 1/1 MOSI MISO Figure 8. SPI Slave Communication Timing Maxim Integrated SAMPLE SHIFT SAMPLE t MCK t t MCH MCL t MOH t MOV MSB MSB MIS MIH MSB ...

Page 20

... ROM utility functions provided for in-application flash memory programming: /* Write one 16-bit word to code address ‘dest’. * Dest must be aligned to 16 bits. = 1MI Q50 Returns 0 = failure OK. */ int flash_write (uint16_t dest, uint16_t data); ROM Loader Loading Flash Memory Maxim Integrated ...

Page 21

... Background mode: CPU is executing the normal user program Allows the host to configure and set up the in-circuit debugger Maxim Integrated • Debug mode: Debugger takes over the control of the CPU Read/write accesses to internal registers and memory Single-step of the CPU for trace operation The interface to the debug engine is the TAP control- ler ...

Page 22

... CPU reset. In these cases, the CPU exits the reset state in less than 20 crystal cycles after the reset source is removed. t < t PFW t ≥ ≥ t PFW monitored for an additional nanopower DD remains above ≥ t PFW PFW > V during RST for RST I Maxim Integrated ...

Page 23

... Table 4. Power-Fail Detection States During Normal Operation INTERNAL STATE POWER-FAIL REGULATOR (Periodically (Periodically) I Off Maxim Integrated CRYSTAL SRAM OSCILLATOR RETENTION Off Off Off Off On On Off Off Off Off MAXQ613 COMMENTS — ...

Page 24

... Exit stop mode. Application enters stop mode. Yes V > RST CPU in stop mode. V < V < POR DD RST Power-fail detected. Yes CPU goes into reset. Power-fail monitor turns on periodically. V < POR — Device held in reset. No operation allowed XTAL_RDY Maxim Integrated ...

Page 25

... HIGH) INTERRUPT Figure 13. Stop Mode Power-Fail Detection with Power-Fail Monitor Disabled Table 6. Stop Mode Power-Fail Detection States with Power-Fail Monitor Disabled INTERNAL STATE POWER-FAIL REGULATOR A Off B Off C On Maxim Integrated B C CRYSTAL OSCILLATOR RETENTION Off Off Off Off On On MAXQ613 D ...

Page 26

... RST An interrupt occurs that causes the CPU to exit stop mode. Yes Power-fail monitor is turned on, detects a power-fail, and puts CPU in reset. Power-fail monitor is turned on periodically. V < POR — Device held in reset. No operation allowed. Additional Documentation MAXQ613 revision-specific errata sheet Maxim Integrated ...

Page 27

... Port 3 Input Register (PI3) • Port 4 Output Register (PO4) • Port 4 Direction Register (PD4) • Port 4 Input Register (PI4) Maxim Integrated for the MAXQ613 Maxim and third-party suppliers provide a variety of highly versatile, affordably priced development tools for this microcontroller, including the following: • ...

Page 28

... Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and max limits) shown in the Electrical Characteristics table are guaranteed ...

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