參數(shù)資料
型號(hào): AM1808BZWT4
廠商: Texas Instruments
文件頁數(shù): 234/264頁
文件大?。?/td> 0K
描述: IC ARM9 MPU 361NFBGA
標(biāo)準(zhǔn)包裝: 90
系列: ARM9
處理器類型: ARM 微處理器
速度: 456MHz
電壓: 1.25 V ~ 1.35 V
安裝類型: 表面貼裝
封裝/外殼: 361-LFBGA
供應(yīng)商設(shè)備封裝: 361-NFBGA(16x16)
包裝: 托盤
其它名稱: 296-28241
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁第89頁第90頁第91頁第92頁第93頁第94頁第95頁第96頁第97頁第98頁第99頁第100頁第101頁第102頁第103頁第104頁第105頁第106頁第107頁第108頁第109頁第110頁第111頁第112頁第113頁第114頁第115頁第116頁第117頁第118頁第119頁第120頁第121頁第122頁第123頁第124頁第125頁第126頁第127頁第128頁第129頁第130頁第131頁第132頁第133頁第134頁第135頁第136頁第137頁第138頁第139頁第140頁第141頁第142頁第143頁第144頁第145頁第146頁第147頁第148頁第149頁第150頁第151頁第152頁第153頁第154頁第155頁第156頁第157頁第158頁第159頁第160頁第161頁第162頁第163頁第164頁第165頁第166頁第167頁第168頁第169頁第170頁第171頁第172頁第173頁第174頁第175頁第176頁第177頁第178頁第179頁第180頁第181頁第182頁第183頁第184頁第185頁第186頁第187頁第188頁第189頁第190頁第191頁第192頁第193頁第194頁第195頁第196頁第197頁第198頁第199頁第200頁第201頁第202頁第203頁第204頁第205頁第206頁第207頁第208頁第209頁第210頁第211頁第212頁第213頁第214頁第215頁第216頁第217頁第218頁第219頁第220頁第221頁第222頁第223頁第224頁第225頁第226頁第227頁第228頁第229頁第230頁第231頁第232頁第233頁當(dāng)前第234頁第235頁第236頁第237頁第238頁第239頁第240頁第241頁第242頁第243頁第244頁第245頁第246頁第247頁第248頁第249頁第250頁第251頁第252頁第253頁第254頁第255頁第256頁第257頁第258頁第259頁第260頁第261頁第262頁第263頁第264頁
SPRS653E – FEBRUARY 2010 – REVISED MARCH 2014
6.4
Reset
6.4.1
Power-On Reset (POR)
A power-on reset (POR) is required to place the device in a known good state after power-up. Power-On
Reset is initiated by bringing RESET and TRST low at the same time. POR sets all of the device internal
logic to its default state. All pins are tri-stated with the exception of RESETOUT which remains active
through the reset sequence, and RTCK/GP8[0]. If an emulator is driving TCK into the device during reset,
then RTCK/GP8[0] will drive out RTCK. If TCK is not being driven into the device during reset, then
RTCK/GP8[0] will drive low. RESETOUT in an output for use by other controllers in the system that
indicates the device is currently in reset.
While both TRST and RESET need to be asserted upon power up, only RESET needs to be released for
the device to boot properly. TRST may be asserted indefinitely for normal operation, keeping the JTAG
port interface and device's emulation logic in the reset state.
TRST only needs to be released when it is necessary to use a JTAG controller to debug the device or
exercise the device's boundary scan functionality. Note: TRST is synchronous and must be clocked by
TCK; otherwise, the boundary scan logic may not respond as expected after TRST is asserted.
RESET must be released only in order for boundary-scan JTAG to read the variant field of IDCODE
correctly. Other boundary-scan instructions work correctly independent of current state of RESET. For
maximum reliability, the device includes an internal pulldown on the TRST pin to ensure that TRST will
always be asserted upon power up and the device's internal emulation logic will always be properly
initialized.
JTAG controllers from Texas Instruments actively drive TRST high. However, some third-party JTAG
controllers may not drive TRST high but expect the use of a pullup resistor on TRST. When using this type
of JTAG controller, assert TRST to intialize the device after powerup and externally drive TRST high
before attempting any emulation or boundary scan operations.
RTCK/GP8[0] is maintained active through a POR.
A summary of the effects of Power-On Reset is given below:
All internal logic (including emulation logic and the PLL logic) is reset to its default state
Internal memory is not maintained through a POR
RESETOUT goes active
All device pins go to a high-impedance state
The RTC peripheral is not reset during a POR. A software sequence is required to reset the RTC
CAUTION: A watchdog reset triggers a POR.
6.4.2
Warm Reset
A warm reset provides a limited reset to the device. Warm Reset is initiated by bringing only RESET low
(TRST is maintained high through a warm reset). Warm reset sets certain portions of the device to their
default state while leaving others unaltered. All pins are tri-stated with the exception of RESETOUT which
remains active through the reset sequence, and RTCK/GP8[0]. If an emulator is driving TCK into the
device during reset, then RTCK/GP8[0] will drive out RTCK. If TCK is not being driven into the device
during reset, then RTCK/GP8[0] will drive low. RESETOUT is an output for use by other controllers in the
system that indicates the device is currently in reset.
During an emulation, the emulator will maintain TRST high and hence only warm reset (not POR) is
available during emulation debug and development.
RTCK/GP8[0] is maintained active through a warm reset.
A summary of the effects of Warm Reset is given below:
All internal logic (except for the emulation logic and the PLL logic) is reset to its default state
Copyright 2010–2014, Texas Instruments Incorporated
Peripheral Information and Electrical Specifications
71
Product Folder Links: AM1808
相關(guān)PDF資料
PDF描述
IDT7133SA25PF8 IC SRAM 32KBIT 25NS 100TQFP
1-84984-3 CONN FFC 13POS 1.00MM VERT PCB
MPC8541EVTALF IC MPU POWERQUICC III 783-FCPBGA
IDT7134LA20JG8 IC SRAM 32KBIT 20NS 52PLCC
4-1734839-8 CONN FPC 48POS .5MM RT ANG SMD
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AM1808BZWTA3 功能描述:微處理器 - MPU ARM MicroProc RoHS:否 制造商:Atmel 處理器系列:SAMA5D31 核心:ARM Cortex A5 數(shù)據(jù)總線寬度:32 bit 最大時(shí)鐘頻率:536 MHz 程序存儲(chǔ)器大小:32 KB 數(shù)據(jù) RAM 大小:128 KB 接口類型:CAN, Ethernet, LIN, SPI,TWI, UART, USB 工作電源電壓:1.8 V to 3.3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FBGA-324
AM1808BZWTA4 制造商:TI 制造商全稱:Texas Instruments 功能描述:AM1808 ARM Microprocessor
AM1808BZWTD3 制造商:TI 制造商全稱:Texas Instruments 功能描述:AM1808 ARM Microprocessor
AM1808BZWTD4 功能描述:微處理器 - MPU ARM MicroProc RoHS:否 制造商:Atmel 處理器系列:SAMA5D31 核心:ARM Cortex A5 數(shù)據(jù)總線寬度:32 bit 最大時(shí)鐘頻率:536 MHz 程序存儲(chǔ)器大小:32 KB 數(shù)據(jù) RAM 大小:128 KB 接口類型:CAN, Ethernet, LIN, SPI,TWI, UART, USB 工作電源電壓:1.8 V to 3.3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FBGA-324
AM1808BZWTT3 制造商:Texas Instruments 功能描述:IC ARM9 CORTEX MPU 361NFBGA 制造商:Texas Instruments 功能描述:AM1808BZWTT3