參數(shù)資料
型號: AT91M40807-33AI
廠商: ATMEL CORP
元件分類: 微控制器/微處理器
英文描述: Microcontroller
中文描述: 32-BIT, MROM, 33 MHz, RISC MICROCONTROLLER, PQFP100
封裝: 1.40 MM HEIGHT, TQFP-100
文件頁數(shù): 32/153頁
文件大?。?/td> 1837K
代理商: AT91M40807-33AI
32
AT91X40 Series
1354D
ATARM
05/02
Additional constraints are applicable to the AT91R40807, the AT91M40807 and the
AT91 40800. The behavior of the EBI is correct when NWAIT is asserted during an
external memory access:
When NWAIT is asserted before the first rising edge of MCKI
When NWAIT is de-asserted and at least one standard wait state remains to be
executed
These constraints are not applicable to the AT91R40008.
Chip Select Change Wait
States
A chip select wait state is automatically inserted when consecutive accesses are made
to two different external memories (if no wait states have already been inserted). If any
wait states have already been inserted, (e.g., data float wait) then none are added.
Figure 21.
Chip Select Wait
Notes:
1. Early Read Protocol
2. Standard Read Protocol
NCS1
NCS2
MCK
Mem 1
Chip Select Wait
Mem 2
NRD
NWE
(1)
(2)
相關(guān)PDF資料
PDF描述
AT91M42800-33AI AT91 ARM Thumb Microcontrollers
AT91M42800-33CI AT91 ARM Thumb Microcontrollers
AT91M42800A-33AI Single 2-Input Exclusive OR Gate
AT91M42800A-33CI IC LOGIC 1G86 SINGLE 2-INPUT EXCLUSIVE-OR GATE -40+85C SC-70-5 3000/REEL
AT91M42800A AT91 ARM Thumb Microcontrollers
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AT91M42800 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:AT91 ARM Thumb Microcontrollers
AT91M42800-33AI 功能描述:IC ARM7 MCU 144 TQFP RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微控制器, 系列:AT91 標(biāo)準(zhǔn)包裝:9 系列:87C 核心處理器:8051 芯體尺寸:8-位 速度:40/20MHz 連通性:UART/USART 外圍設(shè)備:POR,WDT 輸入/輸出數(shù):32 程序存儲器容量:32KB(32K x 8) 程序存儲器類型:OTP EEPROM 大小:- RAM 容量:256 x 8 電壓 - 電源 (Vcc/Vdd):4.5 V ~ 5.5 V 數(shù)據(jù)轉(zhuǎn)換器:- 振蕩器型:內(nèi)部 工作溫度:0°C ~ 70°C 封裝/外殼:40-DIP(0.600",15.24mm) 包裝:管件
AT91M42800-33CI 功能描述:IC ARM7 MCU 144 BGA RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微控制器, 系列:AT91 標(biāo)準(zhǔn)包裝:9 系列:87C 核心處理器:8051 芯體尺寸:8-位 速度:40/20MHz 連通性:UART/USART 外圍設(shè)備:POR,WDT 輸入/輸出數(shù):32 程序存儲器容量:32KB(32K x 8) 程序存儲器類型:OTP EEPROM 大小:- RAM 容量:256 x 8 電壓 - 電源 (Vcc/Vdd):4.5 V ~ 5.5 V 數(shù)據(jù)轉(zhuǎn)換器:- 振蕩器型:內(nèi)部 工作溫度:0°C ~ 70°C 封裝/外殼:40-DIP(0.600",15.24mm) 包裝:管件
AT91M42800A 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:AT91 ARM Thumb Microcontrollers
AT91M42800A_0203 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:AT91 ARM Thumb Microcontrollers