參數(shù)資料
型號(hào): 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): 25/153頁
文件大?。?/td> 1837K
代理商: AT91M40807-33AI
25
AT91X40 Series
1354D
ATARM
05/02
Byte Select Access is used to connect 16-bit devices in a memory page.
The signal A0/NLB is used as NLB and enables the lower byte for both read and
write operations.
The signal NWR1/NUB is used as NUB and enables the upper byte for both read
and write operations.
The signal NWR0/NWE is used as NWE and enables writing for byte or half word.
The signal NRD/NOE is used as NOE and enables reading for byte or half word.
Figure 12 shows how to connect a 16-bit device with byte and half-word access (e.g. 16-
bit SRAM) on NCS2.
Figure 12.
Connection for a 16-bit Data Bus with Byte and Half-word Access
Figure 13 shows how to connect a 16-bit device without byte access (e.g. Flash) on
NCS2.
Figure 13.
Connection for a 16-bit Data Bus without Byte Write Capability.
EBI
D0 - D7
D8 - D15
A1 - A19
NLB
NUB
NWE
NOE
NCS2
D0 - D7
D8 - D15
A0 - A18
Low Byte Enable
Write Enable
Output Enable
Memory Enable
High Byte Enable
EBI
D0 - D7
D8 - D15
A1 - A19
NLB
NWE
NOE
NCS2
D0 - D7
D8 - D15
A0 - A18
Write Enable
Output Enable
Memory Enable
NUB
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(chǔ)器容量:32KB(32K x 8) 程序存儲(chǔ)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(chǔ)器容量:32KB(32K x 8) 程序存儲(chǔ)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