參數(shù)資料
型號(hào)： ATMEGA128
廠(chǎng)商： Atmel Corp.
元件分類(lèi)： 8位微控制器
英文描述： -bit AVR Microcontroller with 8K Bytes In- System Programmable Flash
中文描述： 位AVR微控制器具有8K字節(jié)的系統(tǒng)內(nèi)可編程閃存
文件頁(yè)數(shù)： 19/28頁(yè)
文件大小： 6193K
代理商： ATMEGA128
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
AT93C56AU3-10UI-1.8 3-wire Serial EEPROMs 2K (256 x 8 or 128 x 16)
AT93C56AU3-10UI-2.7 3-wire Serial EEPROMs 2K (256 x 8 or 128 x 16)
AT93C56AW-10SI-1.8 3-wire Serial EEPROMs 2K (256 x 8 or 128 x 16)
AT93C56AW-10SI-2.7 3-wire Serial EEPROMs 2K (256 x 8 or 128 x 16)
AT93C56A-10SE-2.7 16 Characters x 2 Lines, 5x7 Dot Matrix Character and Cursor
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ATMEGA128(L) 制造商:未知廠(chǎng)家 制造商全稱(chēng):未知廠(chǎng)家 功能描述:ATmega128(L) Preliminary Summary [Updated 9/03. 23 Pages]
ATMEGA128_02 制造商:ATMEL 制造商全稱(chēng):ATMEL Corporation 功能描述:8-bit Microcontroller with 128K Bytes In-System Programmable Flash
ATMEGA128_06 制造商:ATMEL 制造商全稱(chēng):ATMEL Corporation 功能描述:8-bit Microcontroller with 128K Bytes In-System Programmable Flash
ATMEGA128_08 制造商:ATMEL 制造商全稱(chēng):ATMEL Corporation 功能描述:8-bit Microcontroller with 128K Bytes In-System Programmable Flash
ATMEGA128_09 制造商:ATMEL 制造商全稱(chēng):ATMEL Corporation 功能描述:8-bit Microcontroller with 128K Bytes In-System Programmable Flash
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