參數(shù)資料
型號(hào): MPC8540PXAPDB
廠商: FREESCALE SEMICONDUCTOR INC
元件分類(lèi): 微控制器/微處理器
英文描述: 32-BIT, 833 MHz, MICROPROCESSOR, PBGA783
封裝: 29 X 29 MM, 3.75 MM HEIGHT, 1 MM PITCH, FLIP CHIP, PLASTIC, BGA-783
文件頁(yè)數(shù): 11/104頁(yè)
文件大?。?/td> 2133K
代理商: MPC8540PXAPDB
MPC8540 Integrated Processor Hardware Specifications, Rev. 3.1
14
Freescale Semiconductor
Clock Timing
4
Clock Timing
4.1 System Clock Timing
Table 7 provides the system clock (SYSCLK) AC timing specifications for the MPC8540.
4.2 TSEC Gigabit Reference Clock Timing
Table 7 provides the TSEC gigabit reference clock (EC_GTX_CLK125) AC timing specifications for the MPC8540.
Table 7. SYSCLK AC Timing Specifications
Parameter/Condition
Symbol
Min
Typical
Max
Unit
Notes
SYSCLK frequency
fSYSCLK
166
MHz
1
SYSCLK cycle time
tSYSCLK
6.0
ns
SYSCLK rise and fall time
tKH, tKL
0.6
1.0
1.2
ns
2
SYSCLK duty cycle
tKHKL/tSYSCLK
40
60
%
3
SYSCLK jitter
+/- 150
ps
4, 5
Notes:
1.Caution: The CCB to SYSCLK ratio and e500 core to CCB ratio settings must be chosen such that the resulting
SYSCLK frequency, e500 (core) frequency, and CCB frequency do not exceed their respective maximum or
PLL Ratio,” for ratio settings.
2. Rise and fall times for SYSCLK are measured at 0.4 V and 2.7 V.
3. Timing is guaranteed by design and characterization.
4. This represents the total input jitter—short term and long term—and is guaranteed by design.
5. The SYSCLK driver’s closed loop jitter bandwidth should be <500 kHz at -20 dB. The bandwidth must be set low to
allow cascade-connected PLL-based devices to track SYSCLK drivers with the specified jitter.
Table 8. EC_GTX_CLK125 AC Timing Specifications
Parameter/Condition
Symbol
Min
Typical
Max
Unit
Notes
EC_GTX_CLK125 frequency
fG125
125
MHz
EC_GTX_CLK125 cycle time
tG125
8
ns
EC_GTX_CLK125 duty cycle
GMII, TBI
RGMII, RTBI
tG125H/tG125
45
47
55
53
%
1
Notes:
1. Timing is guaranteed by design and characterization.
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MPC8540VT667LB 功能描述:微處理器 - MPU PQ 3 8540-DRACOM RoHS:否 制造商:Atmel 處理器系列:SAMA5D31 核心:ARM Cortex A5 數(shù)據(jù)總線(xiàn)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(lèi)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
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