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参数资料
| 型号： | MPC8270ZUSLDX |
| 厂商： | FREESCALE SEMICONDUCTOR INC |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 32-BIT, 375 MHz, RISC PROCESSOR, PBGA480 |
| 封装： | 37.50 X 37.50 MM, 1.55 MM HEIGHT, 1.27 MM PITCH, TBGA-480 |
| 文件页数： | 70/80页 |
| 文件大小： | 536K |
| 代理商： | MPC8270ZUSLDX |
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MPC8280 PowerQUICC II Family Hardware Specifications, Rev. 1.8
72
Freescale Semiconductor
Package Description
9
Package Description
The following sections provide the package parameters and mechanical dimensions.
9.1 Package Parameters
Package parameters are provided in Table 24.
Core Power
L3, V4, W3, AC11, AD11, AB15,
U25, T24, J24, H25, F23, B19, D17,
C17, D10, C10
Ground
B18 6, A18 7, A2, B1, B2, A5, C5,
C18, D4, D6, G2, L4, P1, R1, R4,
AC4, AE7, AC23, Y25, N24, J23,
A23, D23, D20, E18, A13, A16, K10,
K11, K12, K13, K14, K15, K16, K17,
L10, L11, L12, L13, L14, L15, L16,
L17, M10, M11, M12, M13, M14,
M15, M16, M17, N10, N11, N12,
N13, N14, N15, N16, N17, P10, P11,
P12, P13, P14, P15, P16, P17, R10,
R11,R12, R13, R14, R15, R16, R17,
T10, T11, T12, T13, T14, T15, T16,
T17, U10, U11, U12, U13, U14, U15,
U16, U17
1
Should be tied to VDDH via a 2K
Ω external pull-up resistor.
2
The default configuration of the CPM pins (PA[0–31], PB[4–31], PC[0–31], PD[4–31]) is input. To prevent excessive DC
current, it is recommended to either pull unused pins to GND or VDDH, or to configure them as outputs.
3
Must be pulled down or left floating.
4
If PCI is not desired, must be pulled up or left floating.
5
Sphere is not connected to die.
6
GNDSYN (B18): This pin exists as a separate ground signal in MPC826x(A) devices; it does not exist as a separate ground
signal on the MPC8275/MPC8270. New designs must connect B18 to GND and follow the suggestions in Section 4.6, “Layout
Practices.” Old designs in which the MPC8275/MPC8270 is used as a drop-in replacement can leave the pin connected to
GND with the noise filtering capacitors.
7
XFC (A18) pin: This pin is used in MPC826x(A) devices; it is not used in MPC8275/MPC8270 because there is no need for
external capacitor to operate the PLL. New designs should connect A18 (XFC) pin to GND. Old designs in which the
MPC8275/MPC8270 is used as a drop-in replacement can leave the pin connected to the current capacitor.
Table 23. MPC8275 and MPC8270 (VR and ZQ Packages) Pinout List (continued)
Pin Name
Ball
MPC8275/MPC8270
MPC8275 only
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