For additional information, see the MPC5200B User’s Manual (MPC5200BUM). 1.3.4.1 Reset C" />
參數(shù)資料
型號(hào): MPC5200VR400BR2
廠商: Freescale Semiconductor
文件頁數(shù): 7/72頁
文件大小: 0K
描述: IC MPU 32BIT 400MHZ 272-PBGA
標(biāo)準(zhǔn)包裝: 500
系列: MPC52xx
核心處理器: e300
芯體尺寸: 32-位
速度: 400MHz
連通性: CAN,EBI/EMI,以太網(wǎng),I²C,IrDA,J1850,SPI,UART/USART,USB
外圍設(shè)備: AC'97,DMA,I²S,POR,PWM,WDT
輸入/輸出數(shù): 56
程序存儲(chǔ)器類型: 外部程序存儲(chǔ)器
RAM 容量: 16K x 8
電壓 - 電源 (Vcc/Vdd): 1.42 V ~ 1.58 V
振蕩器型: 內(nèi)部
工作溫度: 0°C ~ 70°C
封裝/外殼: 272-BBGA
包裝: 帶卷 (TR)
MPC5200B Data Sheet, Rev. 4
Freescale Semiconductor
15
For additional information, see the MPC5200B User’s Manual (MPC5200BUM).
1.3.4.1
Reset Configuration Word
During reset (HRESET and PORRESET) the Reset Configuration Word is latched in the related Reset Configuration Word
Register with each rising edge of the SYS_XTAL signal. If both resets (HRESET and PORRESET) are inactive (high), the
contents of this register are locked immediately with the SYS_XTAL clock (see Figure 3).
Figure 3. Reset Configuration Word Locking
NOTE
Beware of changing the values on the pins of the reset configuration word after the
deassertion of PORRESET. This may cause problems because it may change the internal
clock ratios and so extend the PLL locking process.
1.3.5
External Interrupts
The MPC5200B provides three different kinds of external interrupts:
Four IRQ interrupts
Eight GPIO interrupts with simple interrupt capability (not available in power-down mode)
Eight WakeUp interrupts (special GPIO pins)
The propagation of these three kinds of interrupts to the core is shown in the following graphic:
sample
sample sample
sample
LOCK
RST_CFG_WRD
HRESET
PORRESET
SYS_XTAL
4096 clocks
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