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| 型號： | MPC8323E-RDB |
| 廠商： | Freescale Semiconductor |
| 文件頁數： | 78/82頁 |
| 文件大?。?/td> | 0K |
| 描述： | BOARD REFERENCE DESIGN |
| 產品培訓模塊： | MPC8323E PowerQUICC II Pro Processor |
| 標準包裝： | 1 |
| 系列： | PowerQUICC II™ PRO |
| 類型： | MCU |
| 適用于相關產品： | MPC8323E |
| 所含物品： | 參考設計板、軟件和說明文檔 |
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MPC8323E PowerQUICC II Pro Integrated Communications Processor Family Hardware Specifications, Rev. 4
8
Freescale Semiconductor
Electrical Characteristics
2.1.3
Output Driver Characteristics
Table 3 provides information on the characteristics of the output driver strengths. The values are
preliminary estimates.
2.1.4
Input Capacitance Specification
Table 4 describes the input capacitance for the CLKIN pin in the MPC8323E.
2.2
Power Sequencing
The device does not require the core supply voltage (VDD) and IO supply voltages (GVDD and OVDD) to
be applied in any particular order. Note that during power ramp-up, before the power supplies are stable
and if the I/O voltages are supplied before the core voltage, there might be a period of time that all input
and output pins are actively driven and cause contention and excessive current. In order to avoid actively
driving the I/O pins and to eliminate excessive current draw, apply the core voltage (VDD) before the I/O
voltage (GVDD and OVDD) and assert PORESET before the power supplies fully ramp up. In the case
where the core voltage is applied first, the core voltage supply must rise to 90% of its nominal value before
the I/O supplies reach 0.7 V; see Figure 3. Once both the power supplies (I/O voltage and core voltage) are
stable, wait for a minimum of 32 clock cycles before negating PORESET.
Note that there is no specific power down sequence requirement for the device. I/O voltage supplies
(GVDD and OVDD) do not have any ordering requirements with respect to one another.
Table 3. Output Drive Capability
Driver Type
Output Impedance
(
Ω)
Supply
Voltage
Local bus interface utilities signals
42
OVDD = 3.3 V
PCI signals
25
DDR1 signal
18
GVDD = 2.5 V
DDR2 signal
18
GVDD = 1.8 V
DUART, system control, I2C, SPI, JTAG
42
OVDD = 3.3 V
GPIO signals
42
OVDD = 3.3 V
Table 4. Input Capacitance Specification
Parameter/Condition
Symbol
Min
Max
Unit
Notes
Input capacitance for all pins except CLKIN
CI
68
pF
—
Input capacitance for CLKIN
CICLKIN
10
—
pF
1
Note:
1. The external clock generator should be able to drive 10 pF.
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相關代理商/技術參數 |
參數描述 |
|---|---|
| MPC8323E-RDB | 制造商:Freescale Semiconductor 功能描述:MPC8323E Integrated Multiservice Gateway |
| MPC8323EVRADDC | 功能描述:微處理器 - MPU 8323 NOPB PBGA W/ENC RoHS:否 制造商:Atmel 處理器系列:SAMA5D31 核心:ARM Cortex A5 數據總線寬度:32 bit 最大時鐘頻率:536 MHz 程序存儲器大小:32 KB 數據 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 安裝風格:SMD/SMT 封裝 / 箱體:FBGA-324 |
| MPC8323EVRADDCA | 制造商:Freescale Semiconductor 功能描述:POWERQUICC, 32 BIT POWER ARCHITECTURE SOC, 266MHZ E300, QE, - Trays 制造商:Freescale Semiconductor 功能描述:IC MPU PWRQUICC 266MHZ 516BGA |
| MPC8323EVRAFDC | 功能描述:微處理器 - MPU 8323 NOPB PBGA W/ENC RoHS:否 制造商:Atmel 處理器系列:SAMA5D31 核心:ARM Cortex A5 數據總線寬度:32 bit 最大時鐘頻率:536 MHz 程序存儲器大小:32 KB 數據 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 安裝風格:SMD/SMT 封裝 / 箱體:FBGA-324 |
| MPC8323EVRAFDCA | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:PowerQUICC? II Pro Integrated Communications Processor Family Hardware Specifications |
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