參數(shù)資料
型號(hào)： XC850DECZT50BUR2
廠商： Freescale Semiconductor
文件頁(yè)數(shù)： 71/72頁(yè)
文件大?。?/td> 0K
描述： IC MPU POWERQUICC 50MHZ 256-PBGA
標(biāo)準(zhǔn)包裝： 500
系列： MPC8xx
處理器類型： 32-位 MPC8xx PowerQUICC
速度： 50MHz
電壓： 3.3V
安裝類型： 表面貼裝
封裝/外殼： 256-BGA
供應(yīng)商設(shè)備封裝： 256-PBGA（23x23）
包裝： 帶卷 (TR)
MPC850 PowerQUICC Integrated Communications Processor Hardware Specifications, Rev. 2
8
Freescale Semiconductor
Thermal Characteristics
4
Thermal Characteristics
Table 3 shows the thermal characteristics for the MPC850.
Table 4 provides power dissipation information.
Table 5 provides the DC electrical characteristics for the MPC850.
Table 3. Thermal Characteristics
Characteristic
Symbol
Value
Unit
Thermal resistance for BGA 1
1
For more information on the design of thermal vias on multilayer boards and BGA layout considerations in
general, refer to AN-1231/D, Plastic Ball Grid Array Application Note available from your local Freescale sales
office.
θJA
40 2
2 Assumes natural convection and a single layer board (no thermal vias).
°C/W
θJA
31 3
3
Assumes natural convection, a multilayer board with thermal vias4, 1 watt MPC850 dissipation, and a board
temperature rise of 20
°C above ambient.
°C/W
θJA
24 4
4 Assumes natural convection, a multilayer board with thermal vias4, 1 watt MPC850 dissipation, and a board
temperature rise of 13
°C above ambient.
TJ = TA + (PD
θJA)
PD = (VDD
IDD) + PI/O
where:
PI/O is the power dissipation on pins
°C/W
Thermal Resistance for BGA (junction-to-case)
θJC
8
°C/W
Table 4. Power Dissipation (PD)
Characteristic
Frequency (MHz)
Typical 1
1
Typical power dissipation is measured at 3.3V
Maximum 2
2
Maximum power dissipation is measured at 3.65 V
Unit
Power Dissipation
All Revisions
(1:1) Mode
33
TBD
515
mW
40
TBD
590
mW
50
TBD
725
mW
Table 5. DC Electrical Specifications
Characteristic
Symbol
Min
Max
Unit
Operating voltage at 40 MHz or less
VDDH, VDDL,
KAPWR, VDDSYN
3.0
3.6
V
Operating voltage at 40 MHz or higher
VDDH, VDDL,
KAPWR, VDDSYN
3.135
3.465
V
Input high voltage (address bus, data bus, EXTAL, EXTCLK,
and all bus control/status signals)
VIH
2.0
3.6
V
Input high voltage (all general purpose I/O and peripheral pins)
VIH
2.0
5.5
V
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