- 您现在的位置：买卖IC网 > PDF目录11784 > DS89C450-QNL+ (Maxim Integrated Products)IC MCU FLASH 64KB 33MHZ 44-PLCC PDF资料下载
参数资料
| 型号： | DS89C450-QNL+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 6/46页 |
| 文件大小： | 0K |
| 描述： | IC MCU FLASH 64KB 33MHZ 44-PLCC |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 26 |
| 系列： | 89C |
| 核心处理器： | 8051 |
| 芯体尺寸： | 8-位 |
| 速度： | 33MHz |
| 连通性： | EBI/EMI，SIO，UART/USART |
| 外围设备： | 电源故障复位，WDT |
| 输入/输出数： | 32 |
| 程序存储器容量： | 64KB（64K x 8） |
| 程序存储器类型： | 闪存 |
| RAM 容量： | 1K x 8 |
| 电压 - 电源 (Vcc/Vdd)： | 4.5 V ~ 5.5 V |
| 振荡器型： | 外部 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 44-LCC（J 形引线） |
| 包装： | 管件 |
| 产品目录页面： | 703 (CN2011-ZH PDF) |
第1页第2页第3页第4页第5页当前第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页
DS89C430/DS89C450 Ultra-High-Speed Flash Microcontrollers
14 of 46
Figure 5. Functional Diagram
CONTROL
AND
SEQUENCER
INTERNAL
REGISTERS
DECODER
IR
INTERRUPT
CPU
SERIAL I/O
TIMER/
COUNTERS
1kB x 8
RAM
16kB/32kB
64kB x 8
FLASH
I/O PORTS
SFRs
DPTR
DPTR1
SP
PC
AR INC
AR
WATCHDOG TIMER
AND
POWER MANAGER
CLOCK
AND
RESET
MEMORY
CONTROL
ROM
LOADER
XT
AL
2
XT
AL
1
RST
P
SEN
E
A
ALE/
PR
O
G
P0 P1 P2 P3
ADDRESS BUS
INTERNAL CONTROL BUS
DETAILED DESCRIPTION
The DS89C430 and DS89C450 are pin compatible with all three packages of the standard 8051 and include
standard resources such as three timer/counters, serial port, and four 8-bit I/O ports. The three part numbers vary
only by the amount of internal flash memory (DS89C430 = 16kB, DS89C450 = 64kB), which can be in-system/in-
application programmed from a serial port using ROM-resident or user-defined loader software. For volume
deployments, the flash can also be loaded externally using standard commercially available parallel programmers.
Besides greater speed, the DS89C430/DS89C450 include 1kB of data RAM, a second full hardware serial port,
seven additional interrupts, two extra levels of interrupt priority, programmable watchdog timer, brownout monitor,
and power-fail reset. Dual data pointers (DPTRs) are included to speed up block data-memory moves with further
enhancements coming from selectable automatic increment/decrement and toggle select operation. The speed of
MOVX data memory access can be adjusted by adding stretch values up to 10 machine cycles for flexibility in
selecting external memory and peripherals.
A power management mode consumes significantly lower power by slowing the CPU execution rate from one clock
period per cycle to 1024 clock periods per cycle. A selectable switchback feature can automatically cancel this
mode to enable normal speed responses to interrupts.
For EMI-sensitive applications, the microcontroller can disable the ALE signal when the processor is not accessing
external memory.
Dallas Semiconductor
DS89C430/
DS89C450
相关PDF资料 |
PDF描述 |
|---|---|
| VE-B43-IW-F1 | CONVERTER MOD DC/DC 24V 100W |
| DS80C320-QNG+ | IC MCU HI SPEED 33MHZ IND 44PLCC |
| VE-B42-IX-F4 | CONVERTER MOD DC/DC 15V 75W |
| DS80C320-ECG+ | IC MCU HI SPEED 25MHZ 44-TQFP |
| VE-B42-IX-F3 | CONVERTER MOD DC/DC 15V 75W |
相关代理商/技术参数 |
参数描述 |
|---|---|
| DS89C450-QNL+ | 功能描述:8位微控制器 -MCU Ultra-High-Speed Flash 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 |
| DS89LV21TM | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Transceiver |
| DS89LV21TN | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Transceiver |
| DS8T26A | 制造商:NSC 制造商全称:National Semiconductor 功能描述:4-Bit Bidirectional Bus Transceivers |
| DS8T26AJ | 制造商:未知厂家 制造商全称:未知厂家 功能描述:4-Bit Bus Transceiver |
发布紧急采购，3分钟左右您将得到回复。