XPC823VR81B2T Freescale Semiconductor, XPC823VR81B2T Datasheet - Page 10

• Manufacturer Part Number: XPC823VR81B2T
• Description: IC MPU POWERQUICC 81MHZ 256-PBGA
• Manufacturer: Freescale Semiconductor

Specifications of XPC823VR81B2T

• Processor Type: MPC8xx PowerQUICC 32-Bit
• Speed: 81MHz
• Voltage: 1.8V
• Mounting Type: Surface Mount
• Package / Case: 256-PBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -

B40
B41
B42
B43
NOTES:
NUM
A(6:31), TSIZ(0:1), RD/WR, BURST, Valid to CLKOUT Rising
Edge
TS Valid to CLKOUT Rising Edge (Setup Time)
CLKOUT Rising Edge to TS Valid (Hold Time)
AS Negation to Memory Controller Signals Negation
1.
2.
3.
4.
5.
6.
7.
8.
CLKOUT
The timing for BR output is relevant when the MPC823 is selected to work with the external bus arbiter.
The timing for BG output is relevant when the MPC823 is selected to work with the internal bus arbiter.
The setup times required for TA, TEA and BI are relevant only when they are supplied by an external device
(and not when the memory controller or the PCMCIA interface drive them).
The timing required for BR input is relevant when the MPC823 is selected to work with the internal bus arbiter.
The timing for BG input is relevant when the MPC823 is selected to work with the external bus arbiter.
The D(0:31) and DP(0:3) input timings B18 and B19 refer to the rising edge of the CLKOUT in which the TA
input signal is asserted.
The D(0:31) and DP(0:3) input timings B20 and B21 refer to the falling edge of the CLKOUT. This timing is
valid only under control of the UPM in the memory controller.
The timing B30 refers to CS when ACS = Ô00Õ and to WE(0:3) when CSNT = Ô0Õ.
The signal UPWAIT is considered asynchronous to the CLKOUT and synchronized internally. The timings
speciÞed in B37 and B38 are speciÞed to enable the freeze of the UPM output signals.
The AS signal is considered asynchronous to the CLKOUT signal.
CHARACTERISTIC
Freescale Semiconductor, Inc.
Table 1. Bus Operation Timing (Continued)
Figure 1. External Clock Timing Diagram
For More Information On This Product,
MPC823 ELECTRICAL SPECIFICATIONS
Go to: www.freescale.com
B4
B1
B1
B5
MIN
Ñ
9
9
2
25MHz
B3
MAX
13
Ñ
Ñ
Ñ
MIN
Ñ
7
7
2
40MHz
B2
MAX
13
Ñ
Ñ
Ñ
MIN
Ñ
7
7
2
50MHz
MAX
13
Ñ
Ñ
Ñ
UNIT
ns
ns
ns
ns