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参数资料
| 型号： | MAXQ622X-0000+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 20/35页 |
| 文件大小： | 0K |
| 描述： | IC MCU 16BIT IR MOD BARE DIE |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1 |
| 系列： | MAXQ® |
| 核心处理器： | RISC |
| 芯体尺寸： | 16-位 |
| 速度： | 12MHz |
| 连通性： | I²C，SPI，UART/USART，USB |
| 外围设备： | 欠压检测/复位，红外线，电源故障，POR，WDT |
| 输入/输出数： | 56 |
| 程序存储器容量： | 128KB（128K x 8） |
| 程序存储器类型： | 闪存 |
| RAM 容量： | 6K x 8 |
| 电压 - 电源 (Vcc/Vdd)： | 1.7 V ~ 3.6 V |
| 振荡器型： | 内部 |
| 工作温度： | 0°C ~ 70°C |
| 封装/外壳： | 模具 |
| 包装： | 托盘 |
| 配用： | MAXQ622-KIT#-ND - EVALUATION KIT FOR MAXQ622 |
| 其它名称： | 90-M6900+D01 |
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27
Maxim Integrated
16-Bit Microcontrollers with
Infrared Module and Optional USB
MAXQ612/MAXQ622
pin to GND. The clock source should be driven through
a CMOS driver. If the clock driver is a TTL gate, its output
must be connected to VDD through a pullup resistor to
ensure a satisfactory logic level for active clock pulses.
To minimize system noise on the clock circuitry, the
external clock source must meet the maximum rise and
fall times and the minimum high and low times specified
for the clock source. The external noise can affect the
clock generation circuit if these parameters do not meet
the specification.
Noise at HFXIN and HFXOUT can adversely affect on-
chip clock timing. It is good design practice to place
the crystal and capacitors as near the oscillator circuitry
as possible with a direct short trace. The typical values
of external capacitors vary with the type of crystal to be
used.
ROM Loader
The ROM loader loads program memory and config-
ures loader-specific configuration features. To increase
the security of the system, the loader denies access to
the system, user loader, or user-application memories
unless an area-specific password is provided.
Loading Flash Memory
An internal bootstrap loader allows reloading over a
simple JTAG interface. As a result, software can be
upgraded in-system, eliminating the need for a costly
hardware retrofit when updates are required. Remote
software uploads are possible that enable physically
inaccessible applications to be frequently updated. The
interface hardware can be a JTAG connection to another
microcontroller, or a connection to a PC serial port using
a USB-to-JTAG converter such as the MAXQUSBJTAG-
KIT#, available from Maxim. If in-system programmabil-
ity is not required, a commercial gang programmer can
be used for mass programming. Activating the JTAG
interface and loading the test access port (TAP) with the
system programming instruction invokes the bootstrap
loader. Setting the SPE bit to one during reset through
the JTAG interface executes the bootstrap-loader mode
program that resides in the utility ROM. When program-
ming is complete, the bootstrap loader can clear the SPE
bit and reset the device, allowing the device to bypass
the utility ROM and begin execution of the application
software.
In addition, the ROM loader also enforces the memory-
protection policies. Passwords that are 16 words are
required to access the ROM loader interface.
In-Application Flash Programming
From user-application code, flash memory can be pro-
grammed using the ROM utility functions from either C
or assembly language. The function declarations below
show examples of some of the 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.
* Returns 0 = failure, 1 = OK.
*/
int flash_write (uint16_t dest, uint16_t data);
To erase, the following function would be used:
/* Erase the given Flash page
* addr: Flash offset (anywhere within page)
*/
int flash_erasepage(uint16_t addr);
The in-application flash memory programming must call
ROM utility functions to erase and program any of the
flash memory. Memory protection is enforced by the
ROM utility functions.
In-Circuit Debug and JTAG
Interface
Embedded debug hardware and software are devel-
oped and integrated to provide full in-circuit debugging
capability in a user-application environment. These hard-
ware and software features include the following:
Debug engine
Set of registers providing the ability to set breakpoints
on register, code, or data using debug service rou-
tines stored in ROM
Collectively, these hardware and software features sup-
port two modes of in-circuit debug functionality:
Background mode:
CPU is executing the normal user program
Allows the host to configure and set up the in-circuit
debugger
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. The interface allows for communication with a bus
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAXQ622X-0000+ | 功能描述:16位微控制器 - MCU 16-Bit MCU w/Infrared Module RoHS:否 制造商:Texas Instruments 核心:RISC 处理器系列:MSP430FR572x 数据总线宽度:16 bit 最大时钟频率:24 MHz 程序存储器大小:8 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:2 V to 3.6 V 工作温度范围:- 40 C to + 85 C 封装 / 箱体:VQFN-40 安装风格:SMD/SMT |
| MAXQ622X-UEI+ | 制造商:Maxim Integrated Products 功能描述:MAXQ622 BLANK WLF FW SCRT UEI - Gel-pak, waffle pack, wafer, diced wafer on film |
| MAXQ7665A | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:16-Bit RISC Microcontroller-Based Smart Data-Acquisition Systems |
| MAXQ7665AATM+ | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:16-Bit RISC Microcontroller-Based Smart Data-Acquisition Systems |
| MAXQ7665B | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:16-Bit RISC Microcontroller-Based Smart Data-Acquisition Systems |
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