Electrical Characteristics
MC68360 USER’S MANUAL
10.9 BUS OPERATION AC TIMING SPECIFICATIONS (CONTINUED)
Num.
Characteristic
Symbol
3.3 V/5.0 V
5.0V
Unit
25.0 MHz
33.34MHz
Min
Max
Min
Max
485,7 DSACK Asserted to BERR , HALT Asserted
tDABA
—30
—
22.5
ns
49
CLKO1 high to BERR, RESETS, RESETH output Low
tCHRO
——
—
ns
53
Data-Out, Parity-Out Hold from CLKO1 High
tDOCH
0—
0
—
ns
54
CLKO1 High to Data-Out, Parity-Out High Impedance
tCHDH
—20
—
15
ns
55
R/W Asserted to Data Bus Impedance Change
tRADC
25
—
19
—
ns
56
RESET Pulse Width (Reset Instruction)
tHRPW
512
—
512
—
CLKO1
56A
RESET
Pulse Width (Input from External Device)
tRPWI
20
—
20
—
CLKO1
57
BERR
Negated to HALT Negated (Rerun)
tBNHN
0—
0
—
ns
58
CLKO1 High to BERR, RESETS, RESETH Driven Low
tCHBRL
—30
26
ns
58A
CLKO1 Low to RESETS Driven Low (upon Reset Instruction
execution only)
tCLRL
—30
26
ns
60
CLKO1 High to BCLRO Asserted
tCHBCA
—20
—
15
ns
61
CLKO1 High to BCLRO Negated
tCHBCN
—20
—
15
ns
629
BR
Synchronous Setup Time
tBRSU
5
—
3.75
—
ns
639
BR
Synchronous Hold Time
tBRH
10
—
7.5
—
ns
649
BGACK
Synchronous Setup Time
tBGSU
5
—
3.75
—
ns
659
BGACK
Synchronous Hold Time
tBGH
10
—
7.5
—
ns
66
BR low to CLKO1 Rising Edge (040 comp. mode)
tBRCH
5—
5
—
ns
70
CLKO1 Low to Data Bus Driven (Show Cycle)
tSCLDD
030
0
22.5
ns
71
Data Setup Time to CLKO1 Low (Show Cycle)
tSCLDS
10
—
7.5
—
ns
72
Data Hold from CLKO1 Low (Show Cycle)
tSCLDH
6
—
3.75
—
ns
73
BKPT
Input Setup Time
tBKST
10
—
7.5
—
ns
74
BKPT
Input Hold Time
tBKHT
6
—
3.75
—
ns
75
RESETH Low to Config2–0, MOD1–0, B16M valid
tMST
—
500
—
500
CLKO1
76
Config2–0
tMSH
0—
0
—
ns
77
MOD1–0 Hold Time, B16M Hold Time
tMSH
10
—
10
—
CLKO1
80
DSI Input Setup Time
tDSISU
10
—
7.5
—
ns
81
DSI Input Hold Time
tDSIH
6
—
3.75
—
ns
82
DSCLK Setup Time
tDSCSU
10
—
7.5
—
ns
83
DSCLK Hold Time
tDSCH
6
—
3.75
—
ns
84
DSO Delay Time
tDSOD
—tcyc+
20
—
tcyc+ 20
ns
85
DSCLK Cycle
tDSCCYC
2—
2
—
CLKO1
86
CLKO1 High to Freeze Asserted
tFRZA
035
0
26.25
ns
87
CLKO1 High to Freeze Negated
tFRZN
035
0
26.25
ns
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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