參數(shù)資料
型號(hào)： MR83C154XXX-16P883D
廠商： ATMEL CORP
元件分類(lèi)： 微控制器/微處理器
英文描述： 8-BIT, MROM, 16 MHz, MICROCONTROLLER, CQCC44
封裝： LCC-44
文件頁(yè)數(shù)： 19/28頁(yè)
文件大?。?/td> 6193K
代理商： MR83C154XXX-16P883D
26
2467X–AVR–06/11
ATmega128
Figure 11. External Memory with Sector Select
Note:
ATmega128 in non ATmega103 compatibility mode: Memory Configuration A is available (Memory
Configuration B N/A)
ATmega128 in ATmega103 compatibility mode: Memory Configuration B is available (Memory
Configuration A N/A)
ATmega103
Compatibility
Both External Memory Control Registers (XMCRA and XMCRB) are placed in Extended I/O
space. In ATmega103 compatibility mode, these registers are not available, and the features
selected by these registers are not available. The device is still ATmega103 compatible, as
these features did not exist in ATmega103. The limitations in ATmega103 compatibility mode
are:
Only two wait-states settings are available (SRW1n = 0b00 and SRW1n = 0b01).
The number of bits that are assigned to address high byte are fixed.
The External Memory section can not be divided into sectors with different wait-state
settings.
Bus-keeper is not available.
RD, WR and ALE pins are output only (Port G in ATmega128).
Using the External
Memory Interface
The interface consists of:
AD7:0: Multiplexed low-order address bus and data bus.
A15:8: High-order address bus (configurable number of bits).
ALE: Address latch enable.
RD: Read strobe.
WR: Write strobe.
Memory Configuration A
0x0000
0x10FF
External Memory
(0-60K x 8)
0xFFFF
Internal memory
SRL[2..0]
SRW11
SRW10
SRW01
SRW00
Lower sector
Upper sector
0x1100
Memory Configuration B
0x0000
External Memory
(0-60K x 8)
0xFFFF
Internal memory
SRW10
0x0FFF
0x1000
相關(guān)PDF資料
PDF描述
MR80C52XXX-30/883:RD 8-BIT, MROM, 30 MHz, MICROCONTROLLER, CQCC44
MQ80C32-36/883R 8-BIT, 36 MHz, MICROCONTROLLER, CQFP44
MD83C154DXXX-12/883 8-BIT, MROM, 12 MHz, MICROCONTROLLER, CDIP40
MF280C51-30D 8-BIT, MROM, 30 MHz, MICROCONTROLLER, PQFP44
MR80C32E-16P883 8-BIT, 16 MHz, MICROCONTROLLER, CQCC44
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MR850 功能描述:整流器 3.0 Amp 50 Volt 150ns RoHS:否 制造商:Vishay Semiconductors 產(chǎn)品:Standard Recovery Rectifiers 配置: 反向電壓:100 V 正向電壓下降: 恢復(fù)時(shí)間:1.2 us 正向連續(xù)電流:2 A 最大浪涌電流:35 A 反向電流 IR:5 uA 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DO-221AC 封裝:Reel
MR850 _AY _10001 制造商:PanJit Touch Screens 功能描述:
MR850 R0 制造商:SKMI/Taiwan 功能描述:Diode Switching 50V 3A 2-Pin DO-201AD T/R
MR850_ R2 _10001 制造商:PanJit Touch Screens 功能描述:
MR850_09 制造商:PANJIT 制造商全稱(chēng):Pan Jit International Inc. 功能描述:SOFT RECOVERY, FAST SWITCHING PLASTIC RECTIFIER
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*