參數(shù)資料
型號： MCIMX257CJN4A
廠商： FREESCALE SEMICONDUCTOR INC
元件分類： 微控制器/微處理器
英文描述： 32-BIT, 400 MHz, MICROPROCESSOR, PBGA347
封裝： 12 X 12 MM, 0.50 MM PITCH, ROHS COMPLIANT, PLASTIC, MAPBGA-347
文件頁數(shù)： 153/154頁
文件大?。?/td> 1498K
代理商： MCIMX257CJN4A
i.MX25 Applications Processor for Consumer and Industrial Products, Rev. 8
98
Freescale Semiconductor
3.7.14.1
SIM Reset Sequences
SIM cards may have internal reset, or active low reset. The following subset describes the reset sequences
in these two cases.
3.7.14.1.1
SIM Cards with Internal Reset
Figure 69 shows the reset sequence for SIM cards with internal reset. The reset sequence comprises the
following steps:
After power-up, the clock signal is enabled on SIMx_CLKy (time T0)
After 200 clock cycles, SIMx_DATAy_RX_TX must be asserted.
The card must send a response on SIMx_DATAy_RX_TX acknowledging the reset between
400–40000 clock cycles after T0.
Figure 69. Internal Reset Card Reset Sequence
Table 75 defines the general timing requirements for the SIM interface.
3.7.14.1.2
SIM Cards with Active Low Reset
Figure 70 shows the reset sequence for SIM cards with active low reset. The reset sequence comprises the
following steps:
After power-up, the clock signal is enabled on SIMx_CLKy (time T0)
After 200 clock cycles, SIMx_DATAy_RX_TX must be asserted.
SIMx_RSTy must remain low for at least 40,000 clock cycles after T0 (no response is to be received
on RX during those 40,000 clock cycles)
SIMx_RSTy is asserted (at time T1)
SIMx_RSTy must remain asserted for at least 40,000 clock cycles after T1, and a response must be
received on SIMx_DATAy_RX_TX between 400 and 40,000 clock cycles after T1.
Table 75. Timing Specifications, Internal Reset Card Reset Sequence
Ref No.
Min.
Max.
Units
1
—
200
clk cycles
2
400
40,000
clk cycles
SIMn_SVENm
SIMx_CLKy
SIMx_DATAy_RX_TX
2
T0
RESPONSE
1
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MCIMX257CVM4 功能描述:處理器 - 專門應(yīng)用 SENNA IMX25 INDUST RoHS:否 制造商:Freescale Semiconductor 類型:Multimedia Applications 核心:ARM Cortex A9 處理器系列:i.MX6 數(shù)據(jù)總線寬度:32 bit 最大時鐘頻率:1 GHz 指令/數(shù)據(jù)緩存: 數(shù)據(jù) RAM 大小:128 KB 數(shù)據(jù) ROM 大小: 工作電源電壓: 最大工作溫度:+ 95 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MAPBGA-432
MCIMX257DJM4 功能描述:處理器 - 專門應(yīng)用 SENNA IMX25 COMM RoHS:否 制造商:Freescale Semiconductor 類型:Multimedia Applications 核心:ARM Cortex A9 處理器系列:i.MX6 數(shù)據(jù)總線寬度:32 bit 最大時鐘頻率:1 GHz 指令/數(shù)據(jù)緩存: 數(shù)據(jù) RAM 大小:128 KB 數(shù)據(jù) ROM 大小: 工作電源電壓: 最大工作溫度:+ 95 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MAPBGA-432
MCIMX257DJM4A 功能描述:處理器 - 專門應(yīng)用 IMX25 1.2 COMM RoHS:否 制造商:Freescale Semiconductor 類型:Multimedia Applications 核心:ARM Cortex A9 處理器系列:i.MX6 數(shù)據(jù)總線寬度:32 bit 最大時鐘頻率:1 GHz 指令/數(shù)據(jù)緩存: 數(shù)據(jù) RAM 大小:128 KB 數(shù)據(jù) ROM 大小: 工作電源電壓: 最大工作溫度:+ 95 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MAPBGA-432
MCIMX257DJM4AR2 制造商:Freescale Semiconductor 功能描述:APPLICATIONS PROCESSOR 400-PIN MA-BGA T/R - Tape and Reel
MCIMX257DVM4 功能描述:IC MPU I.MX25 COMM 400MAPBGA RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:i.MX25 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:260 系列:73S12xx 核心處理器:80515 芯體尺寸:8-位 速度:24MHz 連通性:I²C，智能卡，UART/USART，USB 外圍設(shè)備:LED，POR，WDT 輸入/輸出數(shù):9 程序存儲器容量:64KB（64K x 8） 程序存儲器類型:閃存 EEPROM 大小:- RAM 容量:2K x 8 電壓 - 電源 (Vcc/Vdd):2.7 V ~ 5.5 V 數(shù)據(jù)轉(zhuǎn)換器:- 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 85°C 封裝/外殼:68-VFQFN 裸露焊盤 包裝:管件
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