mpc850de Freescale Semiconductor, Inc, mpc850de Datasheet - Page 11

• Manufacturer Part Number: mpc850de
• Description: Mpc850 Rev. A/b/c Communications Controller
• Manufacturer: Freescale Semiconductor, Inc

MOTOROLA
Num
B1a
B1b
B1d
B1e
B1g
B1h
B7a
B7b
B8a
B8b
B1c
B1f
B1
B2
B3
B4
B5
B7
B8
B9
CLKOUT period
EXTCLK to CLKOUT phase
skew (EXTCLK > 15 MHz and
MF <= 2)
EXTCLK to CLKOUT phase
skew (EXTCLK > 10 MHz and
MF < 10)
CLKOUT phase jitter (EXTCLK >
15 MHz and MF <= 2)
CLKOUT phase jitter
CLKOUT frequency jitter (MF <
10)
CLKOUT frequency jitter (10 <
MF < 500)
CLKOUT frequency jitter (MF >
500)
Frequency jitter on EXTCLK
CLKOUT pulse width low
CLKOUT width high
CLKOUT rise time
CLKOUT fall time
CLKOUT to A[6–31],
RD/WR, BURST, D[0–31],
DP[0–3] invalid
CLKOUT to TSIZ[0–1], REG,
RSV, AT[0–3], BDIP, PTR invalid
CLKOUT to BR, BG, FRZ,
VFLS[0–1], VF[0–2] IWP[0–2],
LWP[0–1], STS invalid
CLKOUT to A[6–31],
RD/WR, BURST, D[0–31],
DP[0–3] valid
CLKOUT to TSIZ[0–1], REG,
RSV, AT[0–3] BDIP, PTR valid
CLKOUT to BR, BG, VFLS[0–1],
VF[0–2], IWP[0–2], FRZ,
LWP[0–1], STS valid
CLKOUT to A[6–31] RD/WR,
BURST, D[0–31], DP[0–3],
TSIZ[0–1], REG, RSV, AT[0–3],
PTR high-Z
2
2
Characteristic
2
4
2
MPC850 (Rev. A/B/C) Hardware Specifications
2
4
3
Table 6. Bus Operation Timing
-0.90
-2.30
-0.60
-2.00
8.00
8.00
5.00
5.00
5.00
5.00
5.00
5.00
5.00
Min
20
—
—
—
—
—
—
50 MHz
11.75
11.75
11.74
11.75
Max
0.90
2.30
0.60
2.00
0.50
2.00
3.00
0.50
4.00
4.00
—
—
—
—
—
—
30.30
12.12
12.12
-0.90
-2.30
-0.60
-2.00
7.58
7.58
7.58
7.58
7.58
7.58
7.58
Min
—
—
—
—
—
—
66 MHz
14.33
14.33
14.33
14.33
Max
0.90
2.30
0.60
2.00
0.50
2.00
3.00
0.50
4.00
4.00
—
—
—
—
—
—
10.00
10.00
-0.90
-2.30
-0.60
-2.00
6.25
6.25
6.25
6.25
6.25
6.25
6.25
Min
25
—
—
—
—
—
—
80 MHz
1
13.00
13.00
13.00
13.00
Max
0.90
2.30
0.60
2.00
0.50
2.00
3.00
0.50
4.00
4.00
—
—
—
—
—
—
FFACT
0.250
0.250
0.250
0.250
0.250
0.250
0.250
—
—
—
—
—
—
—
—
—
—
—
—
—
Layout Practices
Cap Load
(default
50 pF)
50.00
50.00
50.00
50.00
50.00
50.00
50.00
50.00
50.00
50.00
50.00
50.00
50.00
50.00
50.00
50.00
50.00
50.00
50.00
—
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
%
%
%
%
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