MC68HC901 Datasheet, PDF (58/73 Pages) Motorola, Inc – Multi-Function Peripheral

Electrical Characteristics
8.7 AC ELECTRICAL CHARACTERISTICS
(V_CC = 5.0 Vdc ± 5%; GND = 0 Vdc; T_A = 0˚ C to 70˚ C; unless otherwise noted, see
Figures 8-3 through 8-12)
NUM
CHARACTERISTIC
MIN
1^{4 CS, DS Width High}
50
2 R/W, RS1-RS5 Valid to Falling CS Setup Time
0
3 Data Valid Prior to Falling CLK Setup Time (Write Cycle Only)
0
4^{1 CS, IACK Valid to Falling CLK Setup Time}
50
5 CLK Low to DTACK Low
—
6 CS or DS or IACK High to DTACK High
—
7 CS or DS or IACK High to DTACK High Impedance
—
8 DTACK Low to Data Invalid Hold Time (Write)
0
9 CS or DS or IACK High to Data High Impedance (Read)
—
10 CS or DS High to RS1-RS5, R/W Invalid Hold Time
0
11^{5 Data Valid from CS Low (Read)}
—
12 Data Valid to DTACK Low Setup Time (Read)
50
13 DTACK Low to DS or CS or IACK High Hold Time
0
14 IEI Low to Falling CLK Setup Time
50
15 IEO Valid from CLK Low Delay Time
—
16 Data Valid from CLK Low Delay Time
—
17 IEO Invalid from IACK High Delay Time
—
18 DTACK Low from CLK High Delay Time
—
19 IEO Valid from IEI Low Delay Time
—
20 Data Valid from IEI Low Delay Time
—
21 CLK Cycle Time
250
22 CLK Width Low
110
23 CLK Width High
110
24^{2,4 CS, IACK Inactive to Rising CLK Setup Time}
100
25 I/O Minimum Active Pulse Width
100
26^{3 IACK Width High}
2
27 I/O Data Valid from Falling CLK (Write)
—
MAX
—
—
—
—
220
60
100
—
50
—
310
—
—
—
180
300
150
180
100
220
1000
—
—
—
—
—
450
UNIT
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
t_cyc
ns
8-5
MC68HC901 USER’S MANUAL
MOTOROLA