參數(shù)資料
型號: AT91M55800A-33AU
廠商: Atmel
文件頁數(shù): 6/28頁
文件大小: 0K
描述: IC ARM MCU 33MHZ 176-LQFP
產(chǎn)品培訓(xùn)模塊: SAM9 MPU Boot Solutions & Application Deployment
MCU Product Line Introduction
標(biāo)準(zhǔn)包裝: 40
系列: AT91
核心處理器: ARM7
芯體尺寸: 16/32-位
速度: 33MHz
連通性: EBI/EMI,SPI,UART/USART
外圍設(shè)備: POR,WDT
輸入/輸出數(shù): 58
程序存儲器類型: ROMless
RAM 容量: 8K x 8
電壓 - 電源 (Vcc/Vdd): 2.7 V ~ 3.6 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 8x10b; D/A 2x10b
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 176-LQFP
包裝: 托盤
產(chǎn)品目錄頁面: 610 (CN2011-ZH PDF)
配用: AT91EB55-ND - KIT EVAL FOR ARM AT91M55800A
14
1745FS–ATARM–18-Apr-06
AT91M55800A Summary
7.3
Master Clock
Master Clock is generated in one of the following ways, depending on programming in the
APMC registers:
From the 32768 Hz low-power oscillator that clocks the RTC
The on-chip main oscillator, together with a PLL, generate a software-programmable main
clock in the 500 Hz to 33 MHz range. The main oscillator can be bypassed to allow the user
to enter an external clock signal.
The Master Clock (MCK) is also provided as an output of the device on the MCKO pin, whose
state is controlled by the APMC module.
7.4
Reset
Reset restores the default states of the user interface registers (defined in the user interface of
each peripheral), and forces the ARM7TDMI to perform the next instruction fetch from address
zero. Aside from the program counter, the ARM7TDMI registers do not have defined reset
states.
7.4.1
NRST Pin
NRST is active low-level input. It is asserted asynchronously, but exit from reset is synchro-
nized internally to the MCK. At reset, the source of MCK is the Slow Clock (32768 Hz crystal),
and the signal presented on MCK must be active within the specification for a minimum of 10
clock cycles up to the rising edge of NRST, to ensure correct operation.
7.4.2
NTRST Pin
Test Access Port (TAP) reset functionality is provided through the NTRST signal.
The NTRST control pin initializes the selected TAP controller. The TAP controller involved in
this reset is determined according to the initial logical state applied on the JTAGSEL pin after
the last valid NRST.
In either Boundary Scan or ICE Mode a reset can be performed from the same or different cir-
cuitry, as shown in Figure 7-1 below. But in all cases, the NTRST like the NRST signal, must
be asserted after each power-up. (See the AT91M55800A electrical datasheet, Atmel lit°
1727, for the necessary minimum pulse assertion time.)
Figure 7-1.
Separate or Common Reset Management
Notes:
1. NRST and NTRST handling in Debug Mode during development.
2. NRST and NTRST handling during production.
(1)
(2)
Reset
Controller
Reset
Controller
Reset
Controller
NTRST
NRST
NTRST
NRST
AT91M55800A
相關(guān)PDF資料
PDF描述
AT91R40008-66AU IC ARM7 MCU 100 LQFP
AT91RM9200-QI-002 SL383 IC ARM MCU 16BIT 128K 208PQFP
AT91SAM7A3-AU IC ARM7 MCU FLASH 256K 100LQFP
AT91SAM7S321-AU IC ARM7 MCU FLASH 32K 64LQFP
AT91SAM7S32B-MU IC MCU ARM7 32KB FLASH 48-VQFN
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AT91M55800A-33CI 功能描述:IC ARM MCU 33MHZ 176-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
AT91M55800A-33CI SL383 功能描述:IC ARM MCU 16BIT 176BGA 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:1,500 系列:AVR® ATtiny 核心處理器:AVR 芯體尺寸:8-位 速度:16MHz 連通性:I²C,LIN,SPI,UART/USART,USI 外圍設(shè)備:欠壓檢測/復(fù)位,POR,PWM,溫度傳感器,WDT 輸入/輸出數(shù):16 程序存儲器容量:8KB(4K x 16) 程序存儲器類型:閃存 EEPROM 大小:512 x 8 RAM 容量:512 x 8 電壓 - 電源 (Vcc/Vdd):2.7 V ~ 5.5 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 11x10b 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 125°C 封裝/外殼:20-SOIC(0.295",7.50mm 寬) 包裝:帶卷 (TR)
AT91M55800A-33CI-T 功能描述:IC MCU 32BIT ROMLESS 176LFBGA 制造商:microchip technology 系列:AT91 包裝:帶卷(TR) 零件狀態(tài):停產(chǎn) 核心處理器:ARM7? 核心尺寸:16/32-位 速度:33MHz 連接性:EBI/EMI,SPI,UART/USART 外設(shè):POR,WDT I/O 數(shù):58 程序存儲容量:- 程序存儲器類型:ROMless EEPROM 容量:- RAM 容量:8K x 8 電壓 - 電源(Vcc/Vdd):2.7 V ~ 3.6 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 8x10b;D/A 2x10b 振蕩器類型:內(nèi)部 工作溫度:-40°C ~ 85°C(TA) 封裝/外殼:176-LFBGA 供應(yīng)商器件封裝:176-LFBGA(11.2x11.2) 基本零件編號:AT91M55800 標(biāo)準(zhǔn)包裝:1,000
AT91M55800A-33CJ 功能描述:ARM微控制器 - MCU BGA IND TEMP RoHS:否 制造商:STMicroelectronics 核心:ARM Cortex M4F 處理器系列:STM32F373xx 數(shù)據(jù)總線寬度:32 bit 最大時鐘頻率:72 MHz 程序存儲器大小:256 KB 數(shù)據(jù) RAM 大小:32 KB 片上 ADC:Yes 工作電源電壓:1.65 V to 3.6 V, 2 V to 3.6 V, 2.2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:LQFP-48 安裝風(fēng)格:SMD/SMT
AT91M55800A-33CJ SL383 功能描述:IC ARM MCU 16BIT 176BGA 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:1,500 系列:AVR® ATtiny 核心處理器:AVR 芯體尺寸:8-位 速度:16MHz 連通性:I²C,LIN,SPI,UART/USART,USI 外圍設(shè)備:欠壓檢測/復(fù)位,POR,PWM,溫度傳感器,WDT 輸入/輸出數(shù):16 程序存儲器容量:8KB(4K x 16) 程序存儲器類型:閃存 EEPROM 大小:512 x 8 RAM 容量:512 x 8 電壓 - 電源 (Vcc/Vdd):2.7 V ~ 5.5 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 11x10b 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 125°C 封裝/外殼:20-SOIC(0.295",7.50mm 寬) 包裝:帶卷 (TR)