參數(shù)資料
型號(hào): KMPC855TCZQ66D4
廠商: Freescale Semiconductor
文件頁(yè)數(shù): 7/78頁(yè)
文件大?。?/td> 0K
描述: IC MPU POWERQUICC 66MHZ 357-PBGA
標(biāo)準(zhǔn)包裝: 2
系列: MPC8xx
處理器類(lèi)型: 32-位 MPC8xx PowerQUICC
速度: 66MHz
電壓: 3.3V
安裝類(lèi)型: 表面貼裝
封裝/外殼: 357-BBGA
供應(yīng)商設(shè)備封裝: 357-PBGA(25x25)
包裝: 托盤(pán)
MPC860 PowerQUICC Family Hardware Specifications, Rev. 9
Freescale Semiconductor
15
Bus Signal Timing
9
Bus Signal Timing
Table 7 provides the bus operation timing for the MPC860 at 33, 40, 50, and 66 MHz.
The maximum bus speed supported by the MPC860 is 66 MHz. Higher-speed parts must be operated in
half-speed bus mode (for example, an MPC860 used at 80 MHz must be configured for a 40-MHz bus).
The timing for the MPC860 bus shown assumes a 50-pF load for maximum delays and a 0-pF load for
minimum delays.
Table 7. Bus Operation Timings
Num
Characteristic
33 MHz
40 MHz
50 MHz
66 MHz
Unit
Min
Max
Min
Max
Min
Max
Min
Max
B1
CLKOUT period
30.30
25.00
30.30
20.00
30.30
15.15
30.30
ns
B1a
EXTCLK to CLKOUT phase skew
(EXTCLK > 15 MHz and MF <= 2)
–0.90
0.90
–0.90
0.90
–0.90
0.90
–0.90
0.90
ns
B1b
EXTCLK to CLKOUT phase skew
(EXTCLK > 10 MHz and MF < 10)
–2.30
2.30
–2.30
2.30
–2.30
2.30
–2.30
2.30
ns
B1c
CLKOUT phase jitter (EXTCLK > 15 MHz
and MF <= 2)1
–0.60
0.60
–0.60
0.60
–0.60
0.60
–0.60
0.60
ns
B1d
CLKOUT phase jitter1
–2.00
2.00
–2.00
2.00
–2.00
2.00
–2.00
2.00
ns
B1e
CLKOUT frequency jitter (MF < 10)1
0.50
0.50
0.50
0.50
%
B1f
CLKOUT frequency jitter (10 < MF < 500)1
2.00
2.00
2.00
2.00
%
B1g
CLKOUT frequency jitter (MF > 500)1
3.00
3.00
3.00
3.00
%
B1h
Frequency jitter on EXTCLK2
0.50
0.50
0.50
0.50
%
B2
CLKOUT pulse width low
12.12
10.00
8.00
6.06
ns
B3
CLKOUT width high
12.12
10.00
8.00
6.06
ns
B4
CLKOUT rise time3
4.00
4.00
4.00
4.00
ns
CLKOUT fall time3
4.00
4.00
4.00
4.00
ns
B7
CLKOUT to A(0:31), BADDR(28:30),
RD/WR, BURST, D(0:31), DP(0:3) invalid
7.58
6.25
5.00
3.80
ns
B7a
CLKOUT to TSIZ(0:1), REG, RSV, AT(0:3),
BDIP, PTR invalid
7.58
6.25
5.00
3.80
ns
B7b
CLKOUT to BR, BG, FRZ, VFLS(0:1),
VF(0:2) IWP(0:2), LWP(0:1), STS invalid 4
7.58
6.25
5.00
3.80
ns
B8
CLKOUT to A(0:31), BADDR(28:30)
RD/WR, BURST, D(0:31), DP(0:3) valid
7.58
14.33
6.25
13.00
5.00
11.75
3.80
10.04
ns
B8a
CLKOUT to TSIZ(0:1), REG, RSV, AT(0:3)
BDIP, PTR valid
7.58
14.33
6.25
13.00
5.00
11.75
3.80
10.04
ns
B8b
CLKOUT to BR, BG, VFLS(0:1), VF(0:2),
IWP(0:2), FRZ, LWP(0:1), STS valid 4
7.58
14.33
6.25
13.00
5.00
11.75
3.80
10.04
ns
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