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參數(shù)資料
| 型號： | DS89C450-QNL |
| 英文描述： | Ultra-High-Speed Flash Microcontrollers |
| 中文描述： | 超高速閃存微控制器 |
| 文件頁數(shù)： | 35/48頁 |
| 文件大?。?/td> | 656K |
| 代理商： | DS89C450-QNL |
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DS89C430/DS89C440/DS89C450 Ultra-High-Speed Flash Microcontrollers
35 of 48
Figure 13. Page Mode 1, External Data Memory Access
(PAGES = 01, Stretch = 4, CD = 10)
ALE
PSEN
Port 0
Port 2
ALE
PSEN
Port 0
Port 2
RD
/
WR
XTAL1
Inst
Inst
Inst
Inst
Inst
MSB
LSB
LSB
LSB
LSB
LSB
LSB LSB
Inst
Data
Memory Access (Stretch = 4)
MOVX Instruction (Page miss)
3rd
Cycle
Cycle
1st
Cycle
2nd
Cycle
4th
9th
Cycle
MOVX
Instruction
Fetch
LSB
LSB LSB
Inst
Inst
Inst
MOVX Instruction (Page hit)
Memory Access (Stretch = 4)
MOVX
Instruction
Fetch
1st
Cycle
2nd
Cycle
3rd
Cycle
4th
Cycle
5th
Cycle
9th
Cycle
LSB
LSB
LSB
LSB
Inst
Inst
Inst
Inst
RD
/
WR
Data
LSB
Interrupts
The DS89C430 provides 13 interrupt sources. All interrupts, with the exception of the power fail, are controlled by a
series combination of individual enable bits and a global enable (EA) in the interrupt-enable register (IE.7). Setting
EA to a logic 1 allows individual interrupts to be enabled. Setting EA to a logic 0 disables all interrupts regardless of
the individual interrupt-enable settings. The power-fail interrupt is controlled by its individual enable only.
The interrupt enables and priorities are functionally identical to those of the 80C52, except that the DS89C430
supports five levels of interrupt priorities instead of the original two.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| DS89C430-DS89C450 | Ultra-High-Speed Flash Microcontrollers |
| DS89C450 | RES,Wirewound,301Ohms,1+/-% Tol,-20,20ppm-TC,4427-Case |
| DS907X | SipStik Connectors |
| DS9090K | 1-Wire Memory Evaluation Kit |
| DS9093A | iButton Key Ring Mounts |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)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 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(fēng)格:SMD/SMT |
| DS89LV21TM | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Transceiver |
| DS89LV21TN | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Transceiver |
| DS8T26A | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:4-Bit Bidirectional Bus Transceivers |
| DS8T26AJ | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-Bit Bus Transceiver |
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