參數(shù)資料
型號(hào): MPC8255ACZUMHBB
廠商: MOTOROLA INC
元件分類(lèi): 微控制器/微處理器
英文描述: 32-BIT, 266 MHz, RISC PROCESSOR, PBGA480
封裝: 37.50 X 37.50 MM, 1.55 MM HEIGHT, 1.27 MM PITCH, TBGA-480
文件頁(yè)數(shù): 5/36頁(yè)
文件大小: 683K
代理商: MPC8255ACZUMHBB
MOTOROLA
MPC8255 Hardware Specifications
13
PRELIMINARY—SUBJECT TO CHANGE WITHOUT NOTICE
Electrical and Thermal Characteristics
Figure 6 shows PIO, timer, and DMA signals.
Figure 6. PIO, Timer, and DMA Signal Diagram
Table 9 lists SIU input characteristics.
Table 10 lists SIU output characteristics.
Table 9. AC Characteristics for SIU Inputs1
1 Input specifications are measured from the 50% level of the signal to the 50% level of
the rising edge of CLKIN. Timings are measured at the pin.
Spec_num
Characteristic
Setup (ns)
Hold (ns)
66 MHz83 MHz66 MHz83 MHz
sp11/sp10 AACK/ARTRY/TA/TS/TEA/DBG/BG/BR
651
1
sp12/sp10 Data bus in normal mode
5
4
1
sp13/sp10 Data bus in ECC and PARITY modes
8
6
1
sp14/sp10 DP pins
7
6
1
sp15/sp10 All other pins
5
4
1
Table 10. AC Characteristics for SIU Outputs1
1 Output specifications are measured from the 50% level of the rising edge of CLKIN to
the 50% level of the signal. Timings are measured at the pin.
Spec_num
Max/Min
Characteristic
Max Delay (ns)
Min Delay (ns)
66 MHz 83 MHz 66 MHz 83 MHz
sp31/sp30
PSDVAL/TEA/TA
76
0.5
sp32/sp30
ADD/ADD_atr./BADDR/CI/GBL/WT
8
6.5
0.5
sp33a/sp30 Data bus
6.5
0.5
sp33b/sp30 DP
8
7
0.5
sp34/sp30
memc signals/ALE
6
5
0.5
sp35/sp30
all other signals
6
5.5
0.5
CLKin
PIO/TIMER/DMA input signals
TIMER/DMA output signals
sp22
sp23
sp42/sp43
PIO output signals
sp42/sp43
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