參數(shù)資料
型號： DS89C450-ENG
廠商： Maxim Integrated Products
文件頁數(shù)： 6/46頁
文件大?。?/td> 0K
描述： IC MCU FLASH 64KB 25MHZ 44-TQFP
產(chǎn)品培訓(xùn)模塊： Lead (SnPb) Finish for COTS
產(chǎn)品變化通告： Product Discontinuation 20/Feb/2012
標準包裝： 160
系列： 89C
核心處理器： 8051
芯體尺寸： 8-位
速度： 25MHz
連通性： EBI/EMI，SIO，UART/USART
外圍設(shè)備： 電源故障復(fù)位，WDT
輸入/輸出數(shù)： 32
程序存儲器容量： 64KB（64K x 8）
程序存儲器類型： 閃存
RAM 容量： 1K x 8
電壓 - 電源 (Vcc/Vdd)： 4.5 V ~ 5.5 V
振蕩器型： 外部
工作溫度： -40°C ~ 85°C
封裝/外殼： 44-TQFP
包裝： 托盤
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
相關(guān)PDF資料
PDF描述
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DS89C440-MNG IC MCU FLASH 32KB 25MHZ 40-DIP
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DS89C450-ENG+ 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 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風格:SMD/SMT
DS89C450-ENL 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 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風格:SMD/SMT
DS89C450-ENL+ 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 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風格:SMD/SMT
DS89C450-K00 功能描述:開發(fā)板和工具包 - 8051 RoHS:否 制造商:Silicon Labs 產(chǎn)品:Development Kits 工具用于評估:C8051F960, Si7005 核心: 接口類型:USB 工作電源電壓:
DS89C450-KIT# 功能描述:開發(fā)板和工具包 - 8051 Ultra-High-Speed Flash MCU RoHS:否 制造商:Silicon Labs 產(chǎn)品:Development Kits 工具用于評估:C8051F960, Si7005 核心: 接口類型:USB 工作電源電壓:
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