参数资料
型号: MPC870ZT133
厂商: MOTOROLA INC
元件分类: 微控制器/微处理器
英文描述: 32-BIT, 133 MHz, RISC PROCESSOR, PBGA256
封装: 23 X 23 MM, PLASTIC, BGA-256
文件页数: 16/84页
文件大小: 1352K
代理商: MPC870ZT133
23
MPC875/MPC870 Hardware Specifications
MOTOROLA
PRELIMINARY—SUBJECT TO CHANGE WITHOUT NOTICE
Bus Signal Timing
B41
TS valid to CLKOUT rising edge (setup
time) (MIN = 0.00
× B1 + 7.00)
7.00
7.00
7.00
7.00
ns
B42
CLKOUT rising edge to TS valid (hold
time) (MIN = 0.00
× B1 + 2.00)
2.00
2.00
2.00
2.00
ns
B43
AS negation to memory controller signals
negation (MAX = TBD)
—TBD
ns
1 For part speeds above 50 MHz, use 9.80 ns for B11a.
2 The timing required for BR input is relevant when the MPC875/870 is selected to work with the internal bus arbiter.
The timing for BG input is relevant when the MPC875/870 is selected to work with the external bus arbiter.
3 For part speeds above 50 MHz, use 2 ns for B17.
4 The D(0:31) input timings B18 and B19 refer to the rising edge of the CLKOUT in which the TA input signal is asserted.
5 For part speeds above 50 MHz, use 2 ns for B19.
6 The D(0:31) input timings B20 and B21 refer to the falling edge of the CLKOUT. This timing is valid only for read
accesses controlled by chip-selects under control of the user-programmable machine (UPM) in the memory
controller, for data beats where DLT3 = 1 in the RAM words. (This is only the case where data is latched on the falling
edge of CLKOUT.)
7 The timing B30 refers to CS when ACS = 00 and to WE(0:3) when CSNT = 0.
8 The signal UPWAIT is considered asynchronous to the CLKOUT and synchronized internally. The timings specified
in B37 and B38 are specified to enable the freeze of the UPM output signals as described in Figure 19.
9 The AS signal is considered asynchronous to the CLKOUT. The timing B39 is specified in order to allow the behavior
specified in Figure 22.
Table 10. Bus Operation Timings (continued)
Num
Characteristic
33 MHz
40 MHz
66 MHz
80 MHz
Unit
Min
Max
Min
Max
Min
Max
Min
Max
相关PDF资料
PDF描述
MPC875ZT80 32-BIT, 80 MHz, RISC PROCESSOR, PBGA256
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MPC885CVR133 32-BIT, 133 MHz, RISC PROCESSOR, PBGA357
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MPC885CZP133 32-BIT, 133 MHz, RISC PROCESSOR, PBGA357
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