
Electrical Specifications
5.0-Volt SPI Characteristics
MC68HC908GZ60 MC68HC908GZ48 MC68HC908GZ32
Data Sheet
MOTOROLA
Electrical Specifications
361
21.12 5.0-Volt SPI Characteristics
Diagram
Number(1)
Characteristic(2)
Symbol
Min
Max
Unit
Operating frequency
Master
Slave
fOP(M)
fOP(S)
fOP/128
dc
fOP/2
fOP
MHz
1
Cycle time
Master
Slave
tCYC(M)
tCYC(S)
2
1
128
—
tCYC
2
Enable lead time
tLead(S)
1—
tCYC
3
Enable lag time
tLag(S)
1—
tCYC
4
Clock (SPSCK) high time
Master
Slave
tSCKH(M)
tSCKH(S)
tCYC –25
1/2 tCYC –25
64 tCYC
—
ns
5
Clock (SPSCK) low time
Master
Slave
tSCKL(M)
tSCKL(S)
tCYC –25
1/2 tCYC –25
64 tCYC
—
ns
6
Data setup time (inputs)
Master
Slave
tSU(M)
tSU(S)
30
—
ns
7
Data hold time (inputs)
Master
Slave
tH(M)
tH(S)
30
—
ns
8
Access time, slave(3)
CPHA = 0
CPHA = 1
tA(CP0)
tA(CP1)
0
40
ns
9
Disable time, slave(4)
tDIS(S)
—40
ns
10
Data valid time, after enable edge
Master
Slave(5)
tV(M)
tV(S)
—
50
ns
11
Data hold time, outputs, after enable edge
Master
Slave
tHO(M)
tHO(S)
0
—
ns
2. All timing is shown with respect to 20% VDD and 70% VDD, unless noted; 100 pF load on all SPI pins.
3. Time to data active from high-impedance state
4. Hold time to high-impedance state
5. With 100 pF on all SPI pins