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參數(shù)資料
| 型號(hào)： | MCF54418CMJ250 |
| 廠商： | Freescale Semiconductor |
| 文件頁數(shù)： | 36/61頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC MCU 32BIT 256MAPBGA |
| 標(biāo)準(zhǔn)包裝： | 450 |
| 系列： | MCF5441x |
| 核心處理器： | Coldfire V4 |
| 芯體尺寸： | 32-位 |
| 速度： | 250MHz |
| 連通性： | 1 線，CAN，EBI/EMI，以太網(wǎng)，I²C，智能卡，SPI，SSI，UART/USART，USB，USB OTG |
| 外圍設(shè)備： | DMA，PWM，WDT |
| 輸入/輸出數(shù)： | 87 |
| 程序存儲(chǔ)器類型： | ROMless |
| RAM 容量： | 64K x 8 |
| 電壓 - 電源 (Vcc/Vdd)： | 1.14 V ~ 1.32 V |
| 數(shù)據(jù)轉(zhuǎn)換器： | A/D 8x12b，D/A 2x12b |
| 振蕩器型： | 內(nèi)部 |
| 工作溫度： | -40°C ~ 85°C |
| 封裝/外殼： | 256-LBGA |
| 包裝： | 托盤 |
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Electrical characteristics
MCF5441x ColdFire Microprocessor Data Sheet, Rev. 8
Freescale Semiconductor
41
4.16.2.2
Cards with active-low reset
The sequence of reset for this kind of card is as follows (see Figure 23):
1. After powerup, the clock signal is enabled on SIM_CLK (time T0)
2. After 200 clock cycles, RX must be high.
3. SIM_RST 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)
4. SIM_RST is set high (time T1)
5. SIM_RST must remain high for at least 40,000 clock cycles after T1 and a response must be received on RX between
400 and 40,000 clock cycles after T1.
Figure 23. Active-low-reset card reset sequence
4.16.3
Power-down sequence
Power down sequence for SIM interface is as follows:
1. SIM_PD port detects the removal of the SIM card
2. SIM_RST goes low
3. SIM_CLK goes low
4. SIM_TX goes low
5. SIM_VEN goes low
Each of these steps is completed in one CKIL period (usually 32 kHz). Power-down may be started in response to a
card-removal detection or launched by the processor. Figure 24 and Table 23 show the usual timing requirements for this
sequence, with Fckil = CKIL frequency value.
SIM_VEN
SIM_CLK
SIM_RX
2
T0
1
Response
SIM_RST
T1
1
2
< 200 clock cycles
< 40,000 clock cycles
400 clock cycles <
3
400,000 clock cycles <
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MCF54418CMJ250 | 制造商:Freescale Semiconductor 功能描述:IC 32-BIT MPU COLDFIRE 250MHZ 256-MA |
| MCF5441X | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:MCF5441x ColdFire Microprocessor Data Sheet |
| MCF54450 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:ColdFire㈢ Microprocessor |
| MCF54450ACVM180 | 制造商:Freescale Semiconductor 功能描述:MCF5445X RISC 32-BIT 180MHZ 1.8V/2.5V/3.3V 256-PIN MA-BGA BR - Trays 制造商:Freescale Semiconductor 功能描述:MCF5445X V4M CORE, MMU, 制造商:Freescale 功能描述:MPU MCF5445X RISC 32-Bit 180MHz 1.8V/2.5V/3.3V 256-Pin MAP-BGA Brick |
| MCF54450AVM240 | 制造商:Freescale Semiconductor 功能描述:MCF5445X RISC 32-BIT 240MHZ 1.8V/2.5V/3.3V 256-PIN MA-BGA BR - Trays |
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