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参数资料
| 型号： | DS4830T+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 13/30页 |
| 文件大小： | 0K |
| 描述： | MCU 16B CTRL CALIBR MON 40-TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 系列： | MAXQ® |
| 核心处理器： | RISC |
| 芯体尺寸： | 16-位 |
| 速度： | 10MHz |
| 连通性： | 3 线，I²C，SPI |
| 外围设备： | 欠压检测/复位，POR，PWM，WDT |
| 输入/输出数： | 31 |
| 程序存储器容量： | 64KB（32K x 16） |
| 程序存储器类型： | 闪存 |
| RAM 容量： | 1K x 16 |
| 电压 - 电源 (Vcc/Vdd)： | 3 V ~ 3.6 V |
| 数据转换器： | A/D 18x13b，D/A 8x12b |
| 振荡器型： | 内部 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 16-WQFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
| 其它名称： | 90-4830T+TRL |
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DS4830
Optical Microcontroller
20
Maxim Integrated
Stack Memory
A 16-bit, 16-level internal stack provides storage for pro-
gram return addresses. The stack is used automatically
by the processor when the CALL, RET, and RETI instruc-
tions are executed and interrupts serviced. The stack
can also be used explicitly to store and retrieve data by
using the PUSH, POP, and POPI instructions.
On reset, the stack pointer, SP, initializes to the top of the
stack (0Fh). The CALL, PUSH, and interrupt-vectoring
operations increment SP, then store a value at the location
pointed to by SP. The RET, RETI, POP, and POPI opera-
tions retrieve the value at SP and then decrement SP.
Programming
The microcontroller’s flash memory can be programmed
by one of two methods: in-system programming or in-
application programming. These provide great flexibility in
system design as well as reduce the life-cycle cost of the
embedded system. Programming can be password pro-
tected to prevent unauthorized access to code memory.
In-System Programming
An internal bootstrap loader allows the device to be pro-
grammed over the JTAG or I2C compatible interfaces.
As a result, system software can be upgraded in-system,
eliminating the need for a costly hardware retrofit when
software updates are required.
The programming source select (PSS) bits in the ICDF
register determine which interface is used for bootload-
ing operation. The device supports JTAG and I2C as an
interface corresponding to the 00 and 01 bits of PSS,
respectively. See Figure 7.
In-Application Programming
The in-application programming feature allows the micro-
controller to modify its own flash program memory. This
allows on-the-fly software updates in mission-critical
applications that cannot afford downtime. Alternatively, it
Figure 7. In-System Programming
DS4830 RESET INITIATED BY
POR, I2C SELF-RESET, OR
RST PIN.
RESET DEVICE.
BEGIN BOOT ROM CODE
EXECUTION AT 8000h.
WAIT FOR 320 SYSTEM
CYCLES (32s). RESET I2C.
SET PWL BIT.
SET ROD BIT.
BOOTLOADER
SET PSS[1:0] = 01
ROM CODE ENABLES
SLAVE I2C INTERFACE:
ADDRESS IS 36h.
IS JTAG_SPE BIT SET?
NO
YES
SET USING JTAG PROGRAMMER,
FOLLOWED BY RESET OF DEVICE.
WAITS FOR EXIT LOADER
COMMAND FROM HOST
SET BY WRITING F0h TO I2C SLAVE
34h.
JUMP TO USER CODE
(FLASH) AT 0000h.
IS I2C_SPE BIT SET?
NO
YES
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS485 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:Low Power RS-485/RS-422 Multipoint Transceiver |
| DS485M | 功能描述:RS-422/RS-485 接口 IC RoHS:否 制造商:Maxim Integrated 数据速率:1136 Kbps 工作电源电压:3 V to 5.5 V 电源电流:5.9 mA 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-28 封装:Tube |
| DS485M | 制造商:Texas Instruments 功能描述:RS485/422 LOW POWER TRNSCVR SOIC8 |
| DS485M/NOPB | 功能描述:RS-422/RS-485 接口 IC RoHS:否 制造商:Maxim Integrated 数据速率:1136 Kbps 工作电源电压:3 V to 5.5 V 电源电流:5.9 mA 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-28 封装:Tube |
| DS485MX | 功能描述:RS-422/RS-485 接口 IC RoHS:否 制造商:Maxim Integrated 数据速率:1136 Kbps 工作电源电压:3 V to 5.5 V 电源电流:5.9 mA 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-28 封装:Tube |
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