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| 型号： | MAX31782ETL+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 6/20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
14
Hardware Multiplier
The hardware multiplier (a multiply-accumulate, or MAC
module) is a very powerful tool, especially for applica-
tions that require heavy calculations. This multiplier
can execute the multiply, multiply-negate, or multiply-
accumulate, multiply-subtract operation for signed or
unsigned operands in a single machine cycle, and even
faster for special cases. The MAC module uses eight
SFRs, mapped as register 0h–07h in module M5.
System Interrupts
Multiple interrupt sources are available to respond to
internal and external events. The MAXQ20 architecture
uses a single interrupt vector (IV) and single interrupt-
service routine (ISR) design. For maximum flexibility,
interrupts can be enabled globally, individually, or by
module. When an interrupt condition occurs, its indi-
vidual flag is set, even if the interrupt source is disabled
at the local, module, or global level. Interrupt flags must
be cleared within the firmware-interrupt routine to avoid
repeated interrupts from the same source. Application
software must ensure a delay between the write to the
flag and the RETI instruction to allow time for the inter-
rupt hardware to remove the internal interrupt condition.
Asynchronous interrupt flags require a one-instruction
delay and synchronous interrupt flags require a two-
instruction delay. When an enabled interrupt is detected,
execution jumps to a user-programmable interrupt vec-
tor location. The IV register defaults to 0000h on reset or
power-up, so if it is not changed to a different address,
application firmware must determine whether a jump to
0000h came from a reset or interrupt source.
Once control has been transferred to the ISR, the
Interrupt Identification register (IIR) can be used to deter-
mine if a system register or peripheral register was the
source of the interrupt. In addition to IIR, MIIR registers
are implemented to indicate which particular function
under a peripheral module has caused the interrupt. The
device contains six peripheral modules, M0–M5. An MIIR
register is implemented under each module. The MIIR
registers are 16-bit read-only registers and all of them
default to all 0 on system reset. Once the module that
causes the interrupt is singled out, it can then be inter-
rogated for the specific interrupt source and software
can take appropriate action. Interrupts are evaluated
by application code allowing the definition of a unique
interrupt priority scheme for each application. Interrupt
sources are available from the watchdog timer, the ADC,
the TACH.n pins, the programmable timer/counter, the
I2C-compatible master and slave interface, the SVM, and
the port 6 I/O pins.
Programmable Timer/Counter
The device features a general-purpose programmable
timer/counter commonly referred to as a Timer B mod-
ule. The specification for this timer/counter block is the
same as the Timer B specification. There are four reg-
isters associated with this timer/counter block: TB0CN
(control register), TB0V (value register), TB0C (compare
register), and TB0R (capture/reload value register). The
timer/counter has two pins, TBA and TBB, that are multi-
plexed with pins P6.4 and P6.2, respectively. When TBA
or TBB is enabled, the corresponding pin functions as
a timer/counter pin instead of a GPIO. See the I/O Port
section for more details. Detailed information regarding
the timer/counter block can be found in the MAX31782
User’s Guide.
I/O Port
The device includes a simple input/output (I/O) data port,
port 6. Pins P6.0–P6.4 are primary GPIO pins with alter-
nate functions. Each pin is multiplexed with at least one
special function, such as interrupts, timer/counter I/O
pins, or JTAG pins. Table 2 summarizes the functionality
of the I/O pins. Figure 4 shows a block diagram of the
I/O port.
Port 6 pins have Schmitt trigger receivers and full CMOS
output drivers, and can support alternate functions. The
port is accessed through six SFRs (PO6, PI6, PD6, EIE6,
EIF6, and EIES6) in module 1 and each pin can be indi-
vidually configured. The pin is either high impedance or
a weak pullup when defined as an input, dependent on
the state of the corresponding bit in the output register.
In addition, each pin can function as external interrupt
with individual enable, flag, and active edge selection,
when programmed as input.
On power-up, pins P6.0–P6.3 default to JTAG. Clearing
SC.TAP to 0 (1 is the power-up state) configures them as
GPIO. Setting EIE6.n (n = 0–4, 6, 7) to 1 configures P6.n
to an interrupt.
Pins P6.2 and P6.4 have special functions that are the
timer/counter’s TBB and TBA pins, respectively. When
TBB or TBA or both are enabled, P6.2 or P6.4 or both
are used as their special functions. P6.2 and P6.4 are
independent when used as timer/counter pins, i.e., when
either of them is used as a timer/counter pin, the other
can still be used as GPIO if the corresponding special
function is not enabled.
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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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