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| 型号： | MAX31782ETL+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 2/20页 |
| 文件大小： | 0K |
| 描述： | IC MICROCONTROLLER 40TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 3,000 |
| 系列： | MAXQ® |
| 应用： | 系统管理 |
| 核心处理器： | MAXQ20 |
| 程序存储器类型： | 闪存（64 kB），ROM（8 kB） |
| RAM 容量： | 1K x 16 |
| 接口： | I²C，SM 总线 |
| 输入/输出数： | 5 |
| 电源电压： | 2.7 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 40-WFQFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 40-TQFN-EP（6x6） |
| 其它名称： | 90-31782+TTR |
MAX31782
System Management Microcontroller
10
Detailed Description
The MAX31782 incorporates the 16-bit MAXQ20 micro-
controller core with 16 accumulators and 16-level hard-
ware stack. Three memory blocks provide flash applica-
tion code space, utility ROM code space, and RAM mem-
ory. Specialized peripherals are integrated to perform
PWM control of fan speed, read fan tachometers, and
perform temperature monitoring using diode-connected
transistors. The device also features two I2C-compatible
communication peripherals. The slave I2C-compatible
peripheral is included to allow communication between
a host system and the device. An I2C-compatible master
interface is also included to allow communication with
remote I2C digital temperature sensors or other I2C
devices. General-purpose I/O pins (GPIOs) are also
provided to allow interrupt functions and control of other
circuitry using the system management microprocessor.
The MAXQ20 core, along with the specialized peripher-
als, provides a flexible solution for system and thermal
management. Flexibility is further enhanced as the solu-
tion allows for upgrading the program and data flash
contents over the I2C-compatible interface. Updates to
the program flash are protected against unauthorized
writes by a 256-bit user password.
The following sections are an introduction to the pri-
mary features of the MAX31782 system management
microcontroller. More detailed descriptions of the device
features can be found in the MAX31782 User’s Guide.
MAXQ20 Core Architecture
The device employs a MAXQ20 low-cost, high-perfor-
mance, CMOS, fully static, 16-bit RISC microcontroller
with flash memory. It is structured on a highly advanced,
16-accumulator-based, 16-bit RISC architecture. Fetch
and execution operations are completed in one cycle
without pipelining, since the instruction contains both
the op code and data. The highly efficient core is sup-
ported by 16 accumulators and a 16-level hardware
stack, enabling fast subroutine calling and task switch-
ing. Data can be quickly and efficiently manipulated with
three internal data pointers. Multiple data pointers allow
more than one function to access data memory without
having to save and restore data pointers each time. The
data pointers can automatically increment or decrement
following an operation, eliminating the need for software
intervention.
Instruction Set
The instruction set is composed of fixed-length, 16-bit
instructions that operate on registers and memory loca-
tions. The instruction set is highly orthogonal, allowing
arithmetic and logical operations to use any register
along with the accumulator. Special-function registers
control the peripherals and are subdivided into register
modules. The family architecture is modular, so that new
devices and modules can reuse code developed for
existing products.
The architecture is transport-triggered. This means that
writes or reads from certain register locations can also
cause side effects to occur. These side effects form the
basis for higher level op codes defined by the assembly,
such as ADDC, OR, JUMP, etc. The op codes are imple-
mented as MOVE instructions between certain register
locations, while the assembler handles the encoding,
which need not be a concern to the programmer. The
16-bit instruction word is designed for efficient execution.
Bit 15 indicates the format for the source field of the
instruction. Bits 0–7 of the instruction represent the
source for the transfer. Depending on the value of the
format field, this can either be an immediate value or
a source register. If this field represents a register, the
lower 4 bits contain the module specifier and the upper
4 bits contain the register index in that module.
Bits 8–14 represent the destination for the transfer. This
value always represents a destination register, with the
lower 4 bits containing the module specifier and the
upper 3 bits containing the register subindex within that
module. Any time it is necessary to directly select one of
the upper 24 registers as a destination, the prefix regis-
ter, PFX, is needed to supply the extra destination bits.
This prefix register write is inserted automatically by the
assembler and requires only one additional execution
cycle. Refer to the MAX31782 User’s Guide for complete
instruction set information.
Memory Organization
The device incorporates several memory areas, including:
32KWords of flash memory for application program
storage
1KWordsofSRAMforstorageoftemporaryvariables
4KWordsofutilityROMcontainadebuggerandpro-
gram loader
16-levelstackmemoryforstorageofprogramreturn
addresses and general-purpose use
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相关代理商/技术参数 |
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|---|---|
| MAX31782EVKIT# | 功能描述:开发板和工具包 - 其他处理器 MAX31782 Eval Kit RoHS:否 制造商:Freescale Semiconductor 产品:Development Systems 工具用于评估:P3041 核心:e500mc 接口类型:I2C, SPI, USB 工作电源电压: |
| MAX31783ETM+ | 功能描述:8位微控制器 -MCU System Management MCU RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT |
| MAX31783ETM+T | 功能描述:8位微控制器 -MCU System Management RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT |
| MAX31785ETL+ | 功能描述:马达/运动/点火控制器和驱动器 6Ch Intelligent Fan Controller RoHS:否 制造商:STMicroelectronics 产品:Stepper Motor Controllers / Drivers 类型:2 Phase Stepper Motor Driver 工作电源电压:8 V to 45 V 电源电流:0.5 mA 工作温度:- 25 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:HTSSOP-28 封装:Tube |
| MAX31785ETL+T | 功能描述:马达/运动/点火控制器和驱动器 6Ch Intelligent Fan Controller RoHS:否 制造商:STMicroelectronics 产品:Stepper Motor Controllers / Drivers 类型:2 Phase Stepper Motor Driver 工作电源电压:8 V to 45 V 电源电流:0.5 mA 工作温度:- 25 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:HTSSOP-28 封装:Tube |
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